US20100256198A1 - Method for decreasing symptoms of alcohol consumption - Google Patents

Method for decreasing symptoms of alcohol consumption Download PDF

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US20100256198A1
US20100256198A1 US12/667,272 US66727208A US2010256198A1 US 20100256198 A1 US20100256198 A1 US 20100256198A1 US 66727208 A US66727208 A US 66727208A US 2010256198 A1 US2010256198 A1 US 2010256198A1
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metadoxine
composition
subject
administration
certain embodiments
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Gur Megiddo
Dalia Megiddo
Rina Yamin
Yaron Ilan
Shimon Amselem
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Arcturus Therapeutics Ltd
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Alcobra Ltd
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Priority claimed from IL184389A external-priority patent/IL184389A0/en
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Publication of US20100256198A1 publication Critical patent/US20100256198A1/en
Assigned to ALCOBRA LTD. reassignment ALCOBRA LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: YAMIN, RINA, MEGIDDO, GUR, AMSELEM, SHIMON, ILAN, YARON, MEGIDDO, DALIA
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Definitions

  • the present invention relates to methods and compositions of metadoxine and functional, physiologically compatible derivatives thereof, and their use in decreasing symptoms of alcohol consumption as well as in the prevention of alcohol consumption related symptoms in subjects in need thereof.
  • Alcohol abuse is a common problem in the general population all over the world. Alcohol abuse and alcoholism are responsible for a wide variety of medical problems, which are considered part of the new-age epidemics, among them the most recognized being alcohol-induced liver disease, primary and secondary malnutrition, and neuron damage, often leading to death.
  • Metadoxine is a pyridoxine-pyrrolidone carboxylate (also known as pyridoxol L,2-pyrrolidon-5 carboxylate or pyridoxine 5-oxo-2-pyrrolidon-carboxylate) with significant alcohol scavenging properties which has been used to treat acute alcohol intoxication, poisoning, and certain acute alcohol syndromes (reviewed in Addolorato et al., Int. J. Immunopathol. Pharmacol . (2003) 16:207-214). Long term data show that metadoxine is safe for use by humans.
  • Metadoxine is capable of accelerating the elimination of alcohol from the blood and tissues, helping restore the functional structure of the liver and relieve neuro-psychological disorders associated with chronic alcohol intoxication and associated syndromes.
  • metadoxine increased plasma clearance and urinary excretion of ethanol, inhibited the increased production of fatty acid esters in the liver during chronic alcohol intake, reduced oxidative stress and prevented glutathione depletion in hepatic tissues (Antonelli et al., Pharmacol. Res. Commun . (1984) 16:189-197).
  • metadoxine increased the level of GABA and acetylcholine in the frontoparietal cortex of guinea pigs.
  • Metadoxine is an ion-pair between pyrrolidone carboxylate (PCA) and pyridoxine (vitamin B6) with the two compounds linked in a single product by salification.
  • PCA pyrrolidone carboxylate
  • vitamin B6 pyridoxine
  • Metadoxine is freely soluble in water and in gastric fluid. Oral absorption of the drug is fast with high bioavailability (60-80%).
  • the half life of metadoxine in human serum is short (40-60 minutes) without appreciable differences between oral and intravenous administration (Addolorato et al., supra; Lu Yuan et al., Chin. Med. J. 2007 120(2) 160-168).
  • Metadoxine is marketed in several countries as a prescription drug in the form of 500 mg tablets and 300 mg injections. Tablets contain 500 mg of metadoxine, microcrystalline cellulose and magnesium stearate. Ampoules contain 300 mg of metadoxine, sodium metabisulfite, EDTA sodium, methyl-p-hydroxybenzoate and water.
  • Metadoxine compositions formulated for sustained or controlled release optionally also including an immediate release component, and methods for using such sustained or controlled release metadoxine formulations of the invention, are also provided.
  • the invention provides a method for decreasing or preventing symptoms or effects of alcohol consumption in a subject in need thereof, preferably wherein the subject has not reached intoxication, comprising administering a composition comprising metadoxine.
  • the invention provides a method for preventing alcohol intoxication in a subject in need thereof, comprising administering a composition comprising metadoxine.
  • the invention provides a method for reducing or eliminating blood alcohol levels in a subject in need thereof, preferably wherein the subject has not reached intoxication, comprising administering a composition comprising metadoxine.
  • the invention provides a composition comprising metadoxine formulated for sustained release or controlled release.
  • the invention provides a composition comprising metadoxine, wherein a portion of the metadoxine is formulated for sustained or controlled release and a portion of the metadoxine is formulated for immediate release.
  • the composition may comprise metadoxine formulated for immediate release, sustained release, controlled release, or a combination of any of the foregoing.
  • the administration is non-chronic administration.
  • the metadoxine may consist of or comprise a physiologically compatible metadoxine derivative as described herein.
  • the invention provides a method for increasing the mean t max of metadoxine in the blood of a subject in need thereof comprising administering a metadoxine composition of the invention formulated for sustained release or controlled release, optionally including a portion of the metadoxine formulated for immediate release.
  • the invention provides a use of any one of the compositions of the invention in the manufacture of a therapeutic composition useful for practicing each of the methods of the invention as described herein, e.g., for reducing or preventing symptoms or effects of alcohol consumption; for preventing alcohol intoxication; for reducing or eliminating blood alcohol levels in a subject, or for increasing the mean t max of metadoxine in the blood of a subject, among others.
  • metadoxine compositions described herein e.g., metadoxine formulated for immediate release, sustained release, controlled release, or a combination of any of the foregoing
  • the metadoxine may consist of or comprise a physiologically compatible metadoxine derivative, as described herein.
  • metadoxine compositions are formulated for non-chronic administration, and preferably for non-invasive administration.
  • kits comprising a metadoxine composition of the invention, and methods for their use in the treatment or prevention of alcohol consumption related symptoms.
  • Kits may optionally include means for measuring or monitoring blood alcohol concentration (BAC) levels before, during or after administration of a metadoxine composition.
  • BAC blood alcohol concentration
  • FIG. 1 shows a graph of the rate of release of certain metadoxine compositions of the present invention as described in Examples 2-3.
  • the graph illustrates the difference between an immediate release formulation and a slow release formulation of metadoxine.
  • Metadoxine (%) released vs. time (hours).
  • FIG. 2 illustrates exemplary dissolution rates of various slow release metadoxine formulations prepared using different polymers as describes in Examples 4-6. Metadoxine (%) released vs. time (hours).
  • FIG. 3 illustrates metadoxine mean serum levels in 3 pigs after administration of immediate release and slow release formulations as described in Example 13. Metadoxine mean serum levels (micrograms (mcg)/ml) vs. time (hours).
  • FIG. 4 illustrates metadoxine mean serum levels in 3 pigs after administration of a slow release metadoxine formulation (250 mg) and double dose (500 mg) slow release metadoxine formulations as described in Example 13. Metadoxine mean serum levels (mcg/ml) vs. time (hours).
  • an element means one element or more than one element.
  • prophylactic or therapeutic treatment refers to administration to a subject of one or more of the compositions of the invention. If it is administered prior to clinical manifestation of the unwanted condition (e.g., disease or other unwanted state of the host animal) then the treatment is prophylactic, i.e., it contributes to prevention of, i.e., protection of the subject against developing an unwanted condition, whereas if administered after manifestation of an unwanted condition, the treatment is therapeutic (i.e., it is intended to diminish, ameliorate or prevent progression of the unwanted condition or side effects therefrom).
  • the unwanted condition e.g., disease or other unwanted state of the host animal
  • therapeutic effect refers to a local or systemic effect in animals, particularly mammals, and more particularly humans, caused by a pharmacologically active substance or substances.
  • the term thus means any substance intended for use in diagnosis, cure, mitigation, treatment or prevention of disease or in the enhancement of desirable physical or mental development and conditions in an animal or human.
  • therapeutically effective amount means that amount of such a substance that produces some desired local or systemic effect at a reasonable benefit/risk ratio applicable to any treatment.
  • a therapeutically-effective amount of a compound or composition will depend on its therapeutic index, solubility, and the like.
  • certain metadoxine formulations of the present invention may be administered in a sufficient amount to produce a reasonable benefit/risk ratio applicable to a selected treatment, as may be determined by the skilled artisan.
  • an effective amount refers to the amount of a therapeutic reagent that when administered to a subject in an appropriate dose and regimen produces at least one desired result.
  • a “subject” or “patient” to be treated by a method of the invention may mean either a human or non-human animal, preferably a mammal.
  • bioavailable means that at least some amount of a particular compound is present in the systemic circulation.
  • Formal calculations of oral bioavailability are described in terms of an F value (“Fundamentals of Clinical Pharmacokinetics,” John G. Wegner, Drug Intelligence Publications; Hamilton, Ill. 1975).
  • F values are derived from the ratio of the concentration of the parent drug in the systemic circulation (e.g., plasma) following intravenous administration to the concentration of the parent drug in the systemic circulation after administration by a non-intravenous route (e.g., oral). Therefore, oral bioavailability within the scope of the present invention contemplates the ratio or F value of the amount of parent drug detectable in the plasma after oral administration compared to intravenous administration.
  • treating refers to mitigating or alleviating at least on symptom of a condition, disease or disorder in a mammal, such as a human, or the improvement of an ascertainable measurement associated with a condition, disease or disorder.
  • metadoxine refers to the currently known and available form of metadoxine, which is an ion-pair between pyrrolidone carboxylate (PCA) and pyridoxine (vitamin B6) with the two compounds linked in a single product by salification.
  • PCA pyrrolidone carboxylate
  • vitamin B6 pyridoxine
  • Stable association between the PCA and pyridoxine may be non-covalent, such as through a salt link, or other hydrostatic or electrostatic forces.
  • Stable association in other cases, may be accomplished by covalent bonding, e.g., by means of a linker or other chemical bond between the PCA and pyridoxine in which metadoxine activity is retained.
  • linker or other chemical bond between the PCA and pyridoxine in which metadoxine activity is retained.
  • the skilled artisan will be able to test the biological activity of any such complexes in standard metadoxine assays.
  • acceptable derivative refers to any salt, conjugate, ester, complex or other chemical derivative of metadoxine or any of the moieties comprising the same, which, upon administration to a subject, is capable of providing (directly or indirectly) metadoxine or a metabolite or functional residue thereof, or measurable metadoxine activity.
  • physiologically compatible metadoxine derivative may be used interchangeably herein with the term “acceptable derivative” and refers to a functional, active, pharmaceutically acceptable derivative of metadoxine.
  • excipient refers to an inactive substance used as a carrier for the active ingredient in a formulation.
  • controlled release refers to any formulation which delivers an agent at a controlled rate for an extended time and is designed to achieve a desired agent level profile.
  • sustained release is used in its conventional sense to refer to a formulation that provides for gradual release of an active material over an extended period of time, which in certain embodiments may also further result in substantially constant blood levels over an extended time period, i.e., controlled release.
  • immediate release is used in its conventional sense to refer to a formulation that provides for non delayed or controlled release of an active material upon administration.
  • half-life of a substance is the time it takes for a substance to lose half of its pharmacologic, physiologic, or other activity.
  • Biological half-life is an important pharmacokinetic parameter and is usually denoted by the abbreviation t 1/2 .
  • non-invasive refers to modes of treatment which do not puncture the skin.
  • non-chronic administration may be used interchangeably herein with the term “acute administration” and refers to giving a measured or non-measured quantity or portion of a medication to a subject on a non-regular basis.
  • Non-chronic administration may be a single dose treatment or a multiple dose treatment, and may optionally be given over time. Typically but not always, a non-chronic administration is given to treat or prevent a non-chronic condition. Certain chronic conditions may also benefit from non-chronic administration of a metadoxine composition described herein.
  • chronic administration refers to giving a measured quantity of a medication on a regular basis to a subject.
  • chronic administration is to treat or prevent one or more chronic conditions or diseases.
  • Chronic diseases have one or more of the following characteristics: they are permanent, leave residual disability, are caused by nonreversible pathological alteration, require special training of the patient for rehabilitation, or may be expected to require a long period of supervision, observation, or care.
  • single dose treatment refers to giving a measured quantity of a medication to be taken at one time. It is given to treat non-chronic conditions on an irregular basis, depending on personal need.
  • Alcoholism refers to a primary chronic disease known as alcohol dependence syndrome, the most severe stage of a group of drinking problems. Alcoholism is considered a progressive disease, meaning that the symptoms and effects of drinking alcohol become increasingly more severe over time (Morse R. et al., JAMA 268(8):1012-4 (1992)).
  • alcohol abuse refers to repeated drinking despite alcohol-related physical, social, psychological, or occupational problems (The Diagnostic and Statistical Manual of Mental Disorders, IV). When alcohol abuse reaches the alcohol dependence stage, the person may also experience tolerance, withdrawal, and an uncontrolled drive to drink.
  • Symptoms of alcohol consumption and diagnostic criteria for alcohol intoxication include those described in the Diagnostic and Statistical Manual of Mental Disorders DSM-IV, e.g., section 303.00 Diagnostic Criteria for Alcohol Intoxication.
  • alcohol intoxication refers to a situation where the quantity of alcohol a person consumes exceeds the individual's tolerance for alcohol and produces, either during or shortly after drinking, clinically important psychological, behavioral or physical abnormalities, such as inappropriate aggression, and impaired judgment and social functioning.
  • One or more of the following signs or symptoms of alcohol intoxication occur shortly after drinking: (1) slurred speech; (2) impaired motor coordination; (3) unsteady gait; (4) nystagmus (involuntary, irregular eye movement characterized by smooth pursuit of an object in one direction and saccadic movement in the other direction); (5) inattention and/or impaired memory; and (6) stupor or coma (see Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, (DSM-IV) 303.00).
  • Sobriety, intoxication, alcohol abuse, alcohol-related aggression or alcoholism may be measured according to one or more art recognized tests, such as psychomotor texts, serum alcohol level tests, for example accepted inhalation tests, Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, (DSM-IV), Alcohol Abstinence Self-Efficacy Scale (AASE; DiClemente, Carbonari, Montgomery, and Hughes, 1994), Barratt Impulsiveness Scale-11 (BIS-11; Barratt, 1994), State-Trait Anger Expression Inventory-2 (STAXI-2; Spielberger, 1999), Conflict Resolution, Impulsivity and Aggression Questionnaire (CRIAQ; Honess, Maguire, and Vanstone, 2001), Social Problem-Solving Inventory-Revised (SPSI-R; D'Zurilla, Nezu, and Maydeu-Olivares, 2002), Alcohol-Related Aggression Questionnaire (ARAQ; McMurran, Egan, Austin, and Charlesworth, under review), or The Alcohol Use Disorders Identification Test (AUDIT; Saunders,
  • social drinking refers to the consumption of alcohol in a safe, legal and socially acceptable manner usually without the intent of reaching the point of becoming intoxicated (i.e., to achieve alcohol intoxication). Although the amount of blood alcohol which leads to intoxication varies widely between individuals, three or fewer measured drinks (or a blood alcohol level of up to 0.05%) is generally considered to be within the social drinking range.
  • session drinking refers to drinking in large quantities over a single period of time, or session, without the intention of getting heavily intoxicated.
  • the focus is on the social aspects of the occasion.
  • binge drinking refers to drinking alcohol solely for the purpose of intoxication, although it is quite common for binge drinking to apply to a social situation, creating some overlap in social and binge drinking.
  • binge drinking refers to a woman consuming four drinks and a man consuming five drinks on a single drinking occasion. Because drinking occasions can last up to five or seven hours, many such bingers never become intoxicated.
  • t max refers to the time to peak concentration. Calculation of time at which maximum concentration occurs after a single dose administration is performed according to the formula:
  • ⁇ a and ⁇ z are the apparent absorption and elimination rate constants, respectively.
  • the present invention provides a method for decreasing or preventing symptoms or effects of alcohol consumption in a subject in need thereof, especially wherein the subject has not reached intoxication, comprising administering a composition comprising metadoxine or a physiologically acceptable derivative thereof.
  • the method comprises non-chronic administration of a composition comprising metadoxine or a physiologically acceptable derivative thereof.
  • the present invention provides a method for preventing alcohol intoxication in a subject in need thereof, comprising administering a composition comprising metadoxine or a physiologically acceptable derivative thereof.
  • the method comprises non-chronic administration of a composition comprising metadoxine or a physiologically acceptable derivative thereof.
  • methods for preventing intoxication include treatment of a subject with a composition comprising metadoxine or a physiologically acceptable derivative thereof, wherein the subject has previously reached intoxication and has subsequently sobered to a level that is below intoxication during a single drinking session.
  • the present invention provides a method for preventing alcoholism in a subject in need thereof, especially when the subject is not an acute alcoholic, comprising administering a composition comprising metadoxine or a physiologically acceptable derivative thereof.
  • the present invention provides a method for slowing the progression of alcoholism in a subject in need thereof, especially when the subject is not an acute alcoholic, comprising administering a composition comprising metadoxine or a physiologically acceptable derivative thereof.
  • the present invention provides a method for reducing or eliminating blood alcohol levels in a subject in need thereof, especially wherein the subject has not reached intoxication, comprising administering a composition comprising metadoxine or a physiologically acceptable derivative thereof.
  • the method comprises non-chronic administration of a composition comprising metadoxine or a physiologically acceptable derivative thereof.
  • the present invention provides a method for increasing the mean t max of metadoxine in the blood of a subject in need thereof comprising administering a composition comprising metadoxine or a physiologically acceptable derivative thereof, and especially wherein the composition comprises metadoxine or a physiologically acceptable derivative thereof formulated in whole or in part for sustained or controlled release.
  • the method comprises non-chronic administration of a composition comprising metadoxine or a physiologically acceptable derivative thereof formulated in whole or in part for sustained or controlled release.
  • the mean t max of metadoxine in the blood of a subject is increased by 50%, 100%, 150%, 200%, 300%, 400% 500% or greater than 500%.
  • the application provides a method for increasing the half-life (t 1/2 ) of metadoxine in the blood or serum of a subject in need thereof comprising administering a composition comprising metadoxine or a physiologically acceptable derivative thereof, and especially wherein the composition comprises metadoxine or a physiologically acceptable derivative thereof formulated in whole or in part for sustained release or controlled release, optionally including a portion of the metadoxine formulated for immediate release.
  • the t 1/2 of metadoxine in the blood or serum of a subject is increased by 50%, 100%, 150%, 200%, 300%, 400% 500% or greater than 500%.
  • metadoxine or a physiologically acceptable derivative thereof is used for immediate relief of drunkenness and regaining of sobriety in a subject in need thereof.
  • the subject has not reached alcohol intoxication levels.
  • Such immediate relief has a great value in preventing various hazards, particularly motor vehicle accidents and other personal injuries.
  • the method comprises non-chronic administration of a composition comprising metadoxine or a physiologically acceptable derivative thereof, and may optionally be formulated in whole or in part for sustained or controlled release.
  • metadoxine or a physiologically acceptable derivative thereof is used for prolonged relief of drunkenness and regaining of sobriety in a subject in need thereof.
  • the subject has not reached alcohol intoxication levels.
  • the method comprises non-chronic administration of a composition comprising metadoxine or a physiologically acceptable derivative thereof, and may be optionally formulated in whole or in part for sustained or controlled release.
  • methods of the present invention may be used to treat a subject that has consumed alcohol but is not intoxicated. In certain embodiments, the methods of the invention may be used to treat a subject that has consumed alcohol but has not had an increase in psychomotor excitation and aggression.
  • the methods of the present invention are intended for use in a variety of subjects before, during or after a variety of types of alcohol consumption of any amount. As each subject will present with different symptoms of alcohol consumption, blood alcohol concentrations alone are often useful but insufficient taken alone to describe subjects that will benefit from the compositions and methods of the present invention.
  • metadoxine compositions of the invention e.g., formulated in whole or in part for sustained or controlled release, enable more efficient use of metadoxine in the treatment or prevention of non-chronic or chronic alcohol intoxications and syndromes and conditions related thereto.
  • the methods of the present invention may be used to prevent alcohol consumption related symptoms.
  • subjects are treated before any alcohol consumption.
  • subjects are treated after alcohol consumption, but before symptoms occur.
  • subjects are treated after alcohol consumption, but before subjects are intoxicated.
  • the methods of the invention may prevent symptoms of alcohol consumption related to drinking one drink or a portion thereof. In certain embodiments, the methods of the invention may prevent symptoms of alcohol consumption related to drinking 2, 3, 4, 5 or more drinks.
  • the invention provides a method for the rapid or immediate restoration of sobriety following alcohol consumption in a subject in need of such treatment, comprising administering to said subject a composition comprising metadoxine or a physiologically acceptable derivative thereof.
  • the subject has not reached alcohol intoxication levels.
  • the administration is a non-chronic administration.
  • the invention provides a method of treatment and/or prevention of alcohol intoxication in a subject in need of such treatment, comprising administering to said subject a composition comprising metadoxine or a physiologically acceptable derivative thereof.
  • the subject has not reached alcohol intoxication levels.
  • the administration is a non-chronic administration.
  • the invention relates to a method of reducing alcohol blood, serum or tissue levels (e.g., muscle and other non-adipose tissues) in a subject in need of such treatment, comprising administering to said subject a composition comprising metadoxine or a physiologically acceptable derivative thereof.
  • the subject has not reached alcohol intoxication levels.
  • the administration is a non-chronic administration.
  • the invention provides a method of reducing or preventing an increase in BAC in a subject who is or has been consuming alcohol.
  • the methods of the present invention may decrease or prevent an increase in BAC so that the subject has a BAC that is legally low enough to permit the subject to operate a motor vehicle.
  • the compositions of the invention may prevent an increase in BAC beyond 1, 2, 3, or more levels as described in the definitions above.
  • the compositions of the present invention may decrease BAC.
  • the methods of the present invention may decrease BAC to a level where operating a motor vehicle is legally permitted.
  • the compositions of the invention may decrease BAC by 1, 2, 3 or more levels as described in the definitions above.
  • the metadoxine or acceptable derivative thereof may be formulated for immediate release upon administration to the subject. In certain of the above described methods of the invention, the metadoxine or acceptable derivative thereof may be formulated for sustained and/or controlled release, and may optionally be formulated to have both immediate release and sustained and/or controlled release characteristics upon administration to the subject. In certain embodiments, metadoxine or a physiologically acceptable derivative thereof is formulated for non-chronic administration. Metadoxine formulations of the invention are described in more detail below.
  • the present invention provides a composition comprising metadoxine or a physiologically acceptable derivative thereof formulated for sustained and/or controlled release when administered to a subject.
  • the present invention provides a composition comprising metadoxine or a physiologically acceptable derivative thereof wherein a portion of the metadoxine or derivative is formulated for sustained and/or controlled release and a portion of the metadoxine or derivative is formulated for immediate release when administered to a subject.
  • a metadoxine composition may decrease symptoms of alcohol consumption related to drinking one drink or a portion thereof. In certain embodiments, a metadoxine composition may decrease symptoms of alcohol consumption related to drinking 2, 3, 4, 5 or more drinks.
  • a metadoxine composition may be delivered in a single dose form, such as in a single dose drink.
  • the compositions of the invention may be delivered in a single dose per drinking session.
  • a metadoxine composition may be delivered in a single dose per binge drinking session.
  • a metadoxine composition may be delivered in a single dose per acute alcohol related condition or potential condition.
  • a metadoxine composition may be delivered in a single dose form per intoxication or potential intoxication.
  • a potential condition or intoxication may be a state that would lead to the condition or intoxication without intervention.
  • a single dose may be a partial dose, i.e., a portion of a single dosage form.
  • metadoxine compositions may be administered 24 hours, 12 hours, 8 hours, 4 hours, 2 hours, one hour, 55 minutes, 50 minutes, 45 minutes, 40 minutes, 35 minutes, 30 minutes, 25 minutes, 20 minutes, 15 minutes, 10 minutes, 5 minutes or immediately before alcohol consumption.
  • metadoxine compositions may be administered 24 hours, 12 hours, 8 hours, 4 hours, 2 hours, one hour, 55 minutes, 50 minutes, 45 minutes, 40 minutes, 35 minutes, 30 minutes, 25 minutes, 20 minutes, 15 minutes, 10 minutes, 5 minutes or immediately before alcohol related symptoms occur.
  • metadoxine compositions may be administered 24 hours, 12 hours, 8 hours, 4 hours, 2 hours, one hour, 55 minutes, 50 minutes, 45 minutes, 40 minutes, 35 minutes, 30 minutes, 25 minutes, 20 minutes, 15 minutes, 10 minutes, 5 minutes or immediately after alcohol consumption.
  • metadoxine compositions may be administered 24 hours, 12 hours, 8 hours, 4 hours, 2 hours, one hour, 55 minutes, 50 minutes, 45 minutes, 40 minutes, 35 minutes, 30 minutes, 25 minutes, 20 minutes, 15 minutes, 10 minutes, 5 minutes or immediately after alcohol related symptoms occur.
  • metadoxine compositions may be administered hourly, daily, weekly, monthly, yearly (e.g., in a time release form) or as a one-time delivery.
  • the administration may be chronic or non-chronic.
  • the delivery is not continuous.
  • a metadoxine composition may be delivered in a single dose.
  • the administration is once, twice, three times or more within a 12- to 24-hour period at which time the treatment is discontinued.
  • the administration is once, twice, three times or more within a 24- to 48-hour period at which time the treatment is discontinued.
  • the mode of delivery is non-invasive.
  • the delivery is not intravenous.
  • the delivery may be continuous delivery for a period of time, e.g., intravenous delivery.
  • the metadoxine composition is administered at least once per hour. In one embodiment of the methods described herein, the metadoxine composition is administered hourly. In one embodiment of the methods described herein, the metadoxine composition is administered at least once per day. In one embodiment, the metadoxine composition is administered daily. In one embodiment, the metadoxine composition is administered every other day. In one embodiment, the metadoxine composition is administered every 6 to 8 days, or more specifically, weekly.
  • effective serum levels of the active ingredient are achieved within from about 10 to about 20 or 30 or 40 or 50 or 60 minutes following metadoxine administration. In certain embodiments, effective serum levels of the active ingredient are achieved within from about 5 to about 20 or 30 or 40 or 50 or 60 minutes following metadoxine administration. In certain embodiments, effective serum levels of the active ingredient are achieved within from about 20 to about 20 or 30 or 40 or 50 or 60 minutes following metadoxine administration. In certain embodiments, effective serum levels of the active ingredient are achieved within about 5, 10, 15, 20, 30, 40, 50 or 60 minutes.
  • relief or decrease or prevention of alcohol related symptoms are achieved within from about 5 to about 20 or 30 or 40 or 50 or 60 minutes following metadoxine administration. In certain embodiments, relief or decrease or prevention of alcohol related symptoms are achieved within from about 10 to about 20 or 30 or 40 or 50 or 60 minutes following metadoxine administration. In certain embodiments, relief or decrease or prevention of alcohol related symptoms are achieved within from about 15 to about 20 or 30 or 40 or 50 or 60 minutes following metadoxine administration.
  • relief or decrease or prevention of alcohol related symptoms are achieved within from about one hour to about 2, 3, 4, 5, 6, 7 or 8 hours following metadoxine administration. In certain embodiments, relief or decrease or prevention of alcohol related symptoms are achieved within from about 2 hours to about 3, 4, 5, 6, 7 or 8 hours following metadoxine administration. In certain embodiments, relief or decrease or prevention of alcohol related symptoms are achieved within from about 3 hours to about 4, 5, 6, 7 or 8 hours following metadoxine administration. In certain embodiments, relief or decrease or prevention of alcohol related symptoms are achieved within from about 4 hours to about 5, 6, 7 or 8 hours following metadoxine administration. In certain embodiments, relief or decrease or prevention of alcohol related symptoms are achieved within from about 5 hours to about 6, 7 or 8 hours following metadoxine administration. In certain embodiments, relief or decrease or prevention of alcohol related symptoms are achieved within from about 6 hours to about 7 or 8 hours following metadoxine administration. In certain embodiments, relief or decrease or prevention of alcohol related symptoms are achieved within from about 7 to about 8 hours following metadoxine administration.
  • relief or decrease or prevention of alcohol related symptoms are achieved within about 5, 10, 15, 20, 30, 40, 50 or 60 minutes following metadoxine administration. In certain embodiments, relief or decrease or prevention of alcohol related symptoms are achieved within about 2, 3, 4, 5, 6, 7 or 8 hours following metadoxine administration.
  • the therapeutic effective amount, or dosage may be dependent on the amount of alcohol consumed or to be consumed, state of intoxication, severity and responsiveness of the subject, or whether there is to be chronic or acute treatment.
  • the course of metadoxine treatment may last from a few minutes to several days to several months, or until a cure is effected or a diminution of the symptom, condition or disease state is achieved.
  • the treatment regimen selected may be chronic or non-chronic.
  • Optimal dosing schedules may be calculated from measurements of drug accumulation in the body of the patient. Persons of ordinary skill can easily determine optimum dosages, dosing methodologies and repetition rates. In general, dosage is calculated according to body weight, and may be given once or more daily, weekly, monthly or yearly, or even once every 2 to 20 years.
  • the present inventors have developed innovative approaches for the administration of metadoxine based on enteral (via the digestive tract) and/or parenteral (other routes than digestive tract) routes. These approaches provide for a rational design of delivery systems with desired properties based on the meticulous selection of the carrier, e.g. appropriate surfactants/co-surfactants composition or micro/nano particles (such as liposomes or nano-liposomes) entrapping the active ingredients, or other additives or excipients, for the delivery system of interest.
  • the carrier e.g. appropriate surfactants/co-surfactants composition or micro/nano particles (such as liposomes or nano-liposomes) entrapping the active ingredients, or other additives or excipients, for the delivery system of interest.
  • enteral delivery systems may be designed for oral administration (tablets, sachets, lozenges, capsules, gelcaps, drops, or other palatable form) or rectal administration (suppository or (mini) enema form).
  • the delivery system of interest may be in liquid form, for example a drop solution, syrup.
  • the delivery system of interest may be in form of a beverage or food article.
  • the active ingredient/s used by the invention may be comprised in a beverage, particularly soft drinks like juices, nectars, water, sparkling water and other sparkling drinks, shakes, milk shakes and other milk-based drinks, and the like.
  • Liquid preparations may also be in the form of concentrated syrups, for diluting with water or sparkling water.
  • the active ingredient/s may be comprised in food articles, such as snack bars, health bars, biscuits, cookies, sweets, confectionery products, ice creams, ice lollies, and the like.
  • the invention relates to a food or beverage article comprising a physiologically active pyridoxine derivative, particularly pyridoxol L,2-pyrrolidon-5 carboxylate (metadoxine), for fast restoration of sobriety following alcohol consumption in a subject in need thereof, especially wherein the subject has not reached intoxication.
  • a physiologically active pyridoxine derivative particularly pyridoxol L,2-pyrrolidon-5 carboxylate (metadoxine)
  • consumption of the food or beverage article of the invention may lead to achievement of serum levels of the active ingredient within from about 10 to about 40-60 minutes following consumption thereof.
  • compositions of the invention are not administered by invasive modes of treatment (i.e., are non-invasive).
  • metadoxine compositions are not administered by intravenous injection.
  • compositions of the invention are delivered as a microcrystalline powder or a solution suitable for nebulization; for intravaginal or intrarectal administration, pessaries, suppositories, creams or foams.
  • a preferred formulation is a formulation for oral administration.
  • Another preferred formulation is for topical administration.
  • Another preferred formulation is for transmucosal administration, sublingual, buccal (absorbed through cheek near gumline) administration, administration by inhalation or ocular administration, e.g., in eye drops.
  • the present invention provides delivery systems for safe delivery of a variety of substances due to their special physico-chemical features, particularly direct absorption, by non-invasive means, and consequent avoidance of side effects.
  • the delivery systems significantly enhance efficiency and quality of metadoxine absorption based on its unique physicochemical features, which enables lower concentrations or amounts of active substance to be delivered to a subject in a biologically active form.
  • the delivery systems of the invention provide for the direct access of the active substance to the tissues and thus provide immediate or near-immediate effects of metadoxine to the subject in need thereof.
  • the present invention provides a non-invasive pharmaceutical delivery system for the improved administration of a physiologically active pyridoxine, particularly pyridoxol L,2-pyrrolidon-5 carboxylate (metadoxine), or a physiologically acceptable derivative thereof, comprising as the active ingredient said physiologically active pyridoxine in a suitable carrier for fast restoration of sobriety following alcohol consumption in a subject in need thereof, particularly wherein the subject has not reached intoxication.
  • serum levels of the active ingredient are achieved within from about 10 to about 40-60 minutes following administration.
  • the invention provides a non-invasive pharmaceutical delivery system for the improved administration of a physiologically active pyridoxine derivative, particularly pyridoxol L,2-pyrrolidon-5 carboxylate (metadoxine), for use in preventing or treating chronic and/or acute alcohol intoxication in a subject in need thereof, comprising as the active ingredient said pyridoxine derivative, in a suitable carrier.
  • a physiologically active pyridoxine derivative particularly pyridoxol L,2-pyrrolidon-5 carboxylate (metadoxine)
  • metaldoxine pyridoxol L,2-pyrrolidon-5 carboxylate
  • serum levels of said active ingredient are achieved within from about 10 to about 40-60 minutes following administration.
  • the drug delivery systems of the invention may be designed for oral, nasal, ocular, rectal, subcutaneous, transdermal, transmucosal, sublingual, buccal or inhalation administration.
  • the drug delivery systems may provide the active substance in a controlled release mode.
  • the drug delivery systems of the invention may further comprise at least one additional pharmaceutically active agent.
  • the delivery systems of the invention may generally comprise a buffering agent, an agent which adjusts the osmolarity thereof, and optionally, one or more pharmaceutically acceptable carriers, excipients and/or additives as known in the art.
  • Supplementary pharmaceutically acceptable active ingredients can also be incorporated into the compositions.
  • the carrier can be solvent or dispersion medium containing, for example, water, ethanol, polyol (for example, glycerol, propylene glycol, and liquid polyethylene glycol, and the like), suitable mixtures thereof, and vegetable oils.
  • the proper fluidity can be maintained, for example, by the use of a coating, such as lecithin, by the maintenance of the required particle size in the case of dispersion and by the use of surfactants.
  • pharmaceutically acceptable carrier includes any and all solvents, dispersion media, coatings, antibacterial and antifungal agents and the like.
  • the use of such media and agents for pharmaceutical active substances is well known in the art. Except as any conventional media or agent is incompatible with the active ingredient, its use in the therapeutic composition is contemplated. It is contemplated that the active agent can be delivered by any pharmaceutically acceptable route and in any pharmaceutically acceptable dosage form.
  • Oral forms include, but are not limited to, tablets, capsules, pills, sachets, lozenges, drops, powders, granules, elixirs, tinctures, suspensions, syrups, and emulsions. Also included are oral rapid-release, time controlled-release, and delayed-release pharmaceutical dosage forms.
  • the active drug components can be administered in a mixture with suitable pharmaceutical diluents, excipients or carriers (collectively referred to herein as “carrier”), materials suitably selected with respect to the intended form of administration.
  • the active drug components can be combined with a non-toxic pharmaceutically acceptable inert carrier such as lactose, starch, sucrose, glucose, modified sugars, modified starches, methylcellulose and its derivatives, dicalcium phosphate, calcium sulfate, mannitol, sorbitol, and other reducing and non-reducing sugars, magnesium stearate, stearic acid, sodium stearyl fumarate, glyceryl behenate, calcium stearate and the like.
  • a non-toxic pharmaceutically acceptable inert carriers such as ethanol, glycerol, water and the like.
  • suitable binders, lubricants, disintegrating agents and coloring and flavoring agents can also be incorporated into the mixture.
  • Stabilizing agents such as antioxidants, propyl gallate, sodium ascorbate, citric acid, calcium metabisulphite, hydroquinone, and 7-hydroxycoumarin can also be added to stabilize the dosage forms.
  • Other suitable compounds can include gelatin, sweeteners, natural and synthetic gums such as acacia, tragacanth, or alginates, carboxymethylcellulose, polyethylene, glycol, waxes and the like.
  • Additional suitable pharmaceutically acceptable carriers that may be used in these pharmaceutical compositions include, but are not limited to, ion exchangers, alumina, aluminum stearate, magnesium stearate, lecithin, serum proteins, such as human serum albumin, buffer substances such as phosphates, glycine, sorbic acid, potassium sorbate, partial glyceride mixtures of saturated vegetable fatty acids, water, salts or electrolytes, such as protamine sulfate, disodium hydrogen phosphate, potassium hydrogen phosphate, sodium chloride, zinc salts, colloidal silica, magnesium trisilicate, polyvinyl pyrrolidone, cellulose-based substances, polyethylene glycol, sodium carboxymethylcellulose, polyacrylates, waxes, polyethylene-polyoxypropylene-block polymers, polyethylene glycol and wool fat.
  • the pharmaceutically acceptable carrier is magnesium stearate. Additional pharmaceutical excipients commonly accepted and used are found in, for example, Remington's Pharmaceutical Sciences (Genn):
  • solutions in suitable oil such as sesame or peanut oil or in aqueous propylene glycol can be employed, as well as sterile aqueous solutions of the corresponding water-soluble salts.
  • aqueous solutions may be suitably buffered, if necessary, and the liquid diluent first rendered isotonic with sufficient saline or glucose.
  • aqueous solutions are especially suitable for intravenous, intramuscular, subcutaneous and intraperitoneal injection purposes.
  • the sterile aqueous media employed are all readily obtainable by standard techniques well-known to those skilled in the art. Methods of preparing various pharmaceutical compositions with a certain amount of active ingredient are known, or will be apparent in light of this disclosure, to those skilled in this art.
  • metadoxine in human serum is very short. Lu Yuan et al. ( Chin. Med. J. 2007 120(2) 160-168) shows a mean half life of about 0.8 hour.
  • a way of prolonging serum levels of active moiety is by administering the material in a sustained-release formulation. Because metadoxine is freely soluble in water and in various biological fluids (see Example 1), it is difficult to sustain its release and prolong its' absorption time. Therefore, it was unexpected that sustained release could be achieved.
  • a control release dosage form of metadoxine may be based on a predetermined gradual release of the active ingredient in the biological fluids, resulting in a sustained action with small fluctuations of the plasma level over a prolonged period of time.
  • the delivery system of this invention may be administered in controlled release formulations.
  • the method of administration will be determined by the attending physician or other person skilled in the art after an evaluation of the subject's condition and requirements.
  • An embodiment of the method of the present invention is to administer the therapeutic compound described herein in a sustained release form. Any controlled or sustained release method known to those of ordinary skill in the art may be used with the compositions and methods of the invention such as those described in Langer, Science 249(4976):1527-33 (1990). Such method comprises administering a sustained-release composition, a suppository, or a coated implantable medical device so that a therapeutically effective dose of the composition of the invention is continuously delivered to a subject of such a method.
  • Sustained release may also be achieved using a patch designed and formulated for the purpose.
  • the composition of the invention may be delivered via a capsule which allows sustained-release of the agent over a period of time.
  • Controlled or sustained-release compositions include formulation in lipophilic depots (e.g., fatty acids, waxes, oils).
  • particulate compositions coated with polymers e.g., poloxamers or poloxamines.
  • Sustained release formulae or devices, or any topical formulations may additionally contain compositions to stabilize the composition or permeate physiological barrier such as skin or mucous membrane.
  • Exemplary additional components may include any physiologically acceptable detergent, or solvent such as, for example, dimethylsulfoxide (DMSO).
  • the metadoxine in compositions of the invention may be formulated for sustained or controlled release over a period of at least 0.5, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 or 12 hours. In certain embodiments, the metadoxine in compositions of the invention may be formulated for sustained or controlled release over a period of about 0.5, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 or 12 hours. In certain embodiments, the metadoxine in compositions of the invention may be formulated for sustained or controlled release over a period of between about 0.5 or 1 or 2 or 3 or 4 hours and about 5, 6, 7, 8, 9, 10, 11 or 12 hours. In certain embodiments, the metadoxine in compositions of the invention may be formulated for sustained or controlled release over a period of between about 5 or 6 or 7 or 8 hours and about 9, 10, 11 or 12 hours.
  • the metadoxine in compositions of the invention may be in immediate, fast of burst release form.
  • the metadoxine in compositions of the invention may be formulated to release up to 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 99, 99.5 or 100% of the total metadoxine in about 0.5, 1, 2, 3, 4, 5, 6, 7 or 8 hours. In certain embodiments, the metadoxine in compositions of the invention may be formulated to release not less than 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 99, 99.5 or 100% of the total metadoxine in about 0.5, 1, 2, 3, 4, 5, 6, 7 or 8 hours.
  • the metadoxine in compositions of the invention may be in a combination of sustained or slow release and immediate or fast release forms.
  • the relative proportion of sustained or slow release metadoxine to immediate or fast release metadoxine is, e.g., 1 to 99, 5 to 95, 10 to 90, 15 to 85, 20 to 80, 25 to 75, 30 to 70, 35 to 65, 40 to 60, 45 to 55, 50 to 50, 55 to 45, 60 to 40, 65 to 35, 70 to 30, 75 to 25, 80 to 20, 85 to 15, 90 to 10, 95 to 5, or 99 to 1.
  • a polymeric material is used to sustain or control release of metadoxine.
  • the type of polymeric material and the amount of which is used have a strong influence on the rate of release of metadoxine from the product of the present invention.
  • examples of polymers include both hydrophobic and hydrophilic polymers.
  • hydrophobic polymers include, but are not limited to, ethyl cellulose and other cellulose derivatives, fats such as glycerol palmito-stereate, beeswax, glycowax, castorwax, carnaubawax, glycerol monostereate or stearyl alcohol, hydrophobic polyacrylamide derivatives and hydrophobic methacrylic acid derivatives, as well as mixtures of these polymers.
  • Hydrophilic polymers include, but are not limited to, hydrophilic cellulose derivatives such as methyl cellulose, hydroxypropylmethyl cellulose, hydroxyethylcellulose, hydroxypropyl cellulose, carboxymethyl cellulose, sodium carboxymethylcellulose and hydroxyethyl methylcellulose polyvinyl alcohol, polyethylene, polypropylene, polystyrene, polyacrylamide, ethylene vinyl acetate copolymer, polyacrylate, polyurethane, polyvinylpyrrolidone, polymethylmethacrylate, polyvinyl acetate, polyhydroxyethyl methacrylate, as well as mixtures of these polymers. Furthermore, any mixture of one or more hydrophobic polymer and one or more hydrophilic polymer could optionally be used.
  • a polymeric material to be used in compositions of the invention is microcrystalline cellulose such as “Avicel PH 101” manufactured by FMC BioPolymer's.
  • a polymeric material to be used in compositions of the invention is Hydroxypropyl Methylcellulose such as “Metholose” produced by Shin-Etsu Chemical Co.
  • a polymeric material to be used in compositions of the invention is Ethyl cellulose such as “EthocelTM” manufactured by The Dow Chemical Company.
  • a polymeric material to be used in compositions of the invention is an acrylic polymer such as “Eudragit RSTM” produced by Rohm GmbH.
  • a polymeric material to be used in compositions of the invention is a colloidal silicone dioxide such as “AerosilTM” manufactured by Degussa.
  • a polymeric material to be used in compositions of the invention is a Poly (Vinyl Acetate) such as “Kollicoat SR” manufactured by BASF.
  • a polymeric material to be used in compositions of the invention is an Ethyl Acetate and Vinyl Acetate solution such as “Duro-Tak” manufactured by Delasco Dermatologic Lab & Supply, Inc.
  • composition of the invention comprises or consists essentially of Formula 1.
  • Formula 1 comprises or consists essentially of 100-3000 mg metadoxine and 5-20,000 mg metholose.
  • composition of the invention comprises or consists essentially of Formula 2.
  • Formula 2 comprises or consists essentially of 100-3000 mg metadoxine and 5-7000 mg Ethocel E10TM.
  • composition of the invention comprises or consists essentially of Formula 3.
  • Formula 3 comprises or consists essentially of 100-3000 mg metadoxine and 5-20,000 mg Eudragit RSTM.
  • the compositions of the invention comprise or consist essentially of about 250, 300, 400, 500, 600, 700, 800, or 900 mg to about 1000, 1500, 2000, 2500 or 3000 mg metadoxine. In certain embodiments, the compositions of the invention comprise or consist essentially of about 5, 100, 500, or 1000 mg to about 2000, 4000, 10,000, 15,000, or 20,000 mg Avicel PH 101TM. In certain embodiments, the compositions of the invention comprise or consist essentially of about 25, 50, 100, 150, 200, 250, 300, 350, 400, 450, 500, 550 or 600 mg to about 650, 700, 750, 800, 850, 900, 950, 1000, 5000, 10,000, 15,000 or 20,000 mg of a polymeric material.
  • the polymeric material is metholose, Ethocel E10TM or Eudragit RSTM.
  • metholose comprises or consists essentially of between 1 and 90% of the formulation, preferably between 5 and 70%.
  • EthocelTM comprises or consists essentially of between 1 and 30% of the formulation, preferably between 2 and 20%.
  • EudragitTM comprises or consists essentially of between 1 and 90% of the formulation, preferably between 5 and 70%.
  • delivery systems of the invention comprise delivery devices.
  • the compositions of the invention are delivered by an osmotic process at a controlled rate such as by an osmotic pump.
  • the system may be constructed by coating an osmotically active agent with a rate controlling semipermeable membrane. This membrane may contain an orifice of critical size through which agent is delivered.
  • the dosage form after coming into contact with aqueous fluids, imbibes water at a rate determined by the fluid permeability of the membrane and osmotic pressure of the core formulation. This osmotic imbibitions of water result in formation of a saturated solution of active material with in the core, which is dispensed at controlled rate from the delivery orifice in the membrane.
  • the compositions of the invention are delivered using biodegradable microparticles.
  • the system to prepare microparticles consists of an organic phase comprised of a volatile solvent with dissolved polymer and the material to be encapsulated, emulsified in an aqueous phase.
  • the biodegradable polymers that can be used for the microparticle matrix comprises polylactic acid (PLA) or the copolymer of lactic and glycolic acid (PLAGA).
  • PLAGA polylactic acid
  • PLAGA copolymer of lactic and glycolic acid
  • the preparation may also contain an absorption enhancer and other optional components.
  • absorption enhancers include, but are not limited to, are cyclodextrins, phospholipids, chitosan, DMSO, Tween, Brij, glycocholate, saponin, fusidate and energy based enhancing absorption equipment.
  • Optional components present in the dosage forms include, but are not limited to, diluents, binders, lubricants, surfactants, coloring agents, flavors, buffering agents, preservatives, stabilizing agents and the like.
  • Diluents also termed “fillers” include, for example, dicalcium phosphate dihydrate, calcium sulfate, lactose, cellulose, kaolin, mannitol, sodium chloride, dry starch, hydrolyzed starches, silicon dioxide, colloidal silica, titanium oxide, alumina, talc, microcrystalline cellulose, and powdered sugar.
  • the diluents include, for example, ethanol, sorbitol, glycerol, water and the like.
  • Binders are used to impart cohesive qualities to the formulation.
  • Suitable binder materials include, but are not limited to, starch (including corn starch and pregelatinzed starch), gelatin, sugars (including sucrose, glucose, dextrose, lactose and sorbitol), polyethylene glycol, waxes, natural and synthetic gums, e.g., acacia, tragacanth, sodium alginate, celluloses, and Veegum, and synthetic polymers such as polymethacrylates and polyvinylpyrrolidone.
  • Lubricants are used to facilitate manufacture; examples of suitable lubricants include, for example, magnesium stearate, calcium stearate, stearic acid, glyceryl behenate, and polyethylene glycol.
  • Surfactants may be anionic, cationic, amphoteric or nonionic surface active agents, with anionic surfactants preferred.
  • Suitable anionic surfactants include, but are not limited to, those containing carboxylate, sulfonate and sulfate ions, associated with cations such as sodium, potassium and ammonium ions.
  • Particularly preferred surfactants include, but are not limited to: long alkyl chain sulfonates and alkyl aryl sulfonates such as sodium dodecylbenzene sulfonate; dialkyl sodium sulfosuccinates, such as sodium bis-(2-ethylhexyl)-sulfosuccinate; and alkyl sulfates such as sodium lauryl sulfate.
  • Stabilizing agents such as antioxidants, include, but are not limited to, propyl gallate, sodium ascorbate, citric acid, calcium metabisulphite, hydroquinone, and 7-hydroxycoumarin.
  • compositions may also contain minor amounts of nontoxic auxiliary substances such as wetting or emulsifying agents, preservatives, and the like.
  • compositions of the invention may be used alone or in combination with one or more additional therapeutic agents, for the treatment of alcohol consumption related symptoms.
  • additional therapeutic agents see U.S. Patent Application Publication Nos. 2005/0271739, 2004/0162270 and 2002/0192303, herein incorporated by reference in their entirety.
  • compositions of this invention should be formulated so that a dosage of between 0.1-1 g/kg body weight/day, preferably 0.1-300 mg/kg body weight, can be administered.
  • the dose of the compound depends on the condition and the illness of the patient, and the desired daily dose.
  • the oral daily dose is preferably 10-3000 mg. These doses are administered in unit dosage forms, which may be divided into 2-3 smaller doses for each day in certain cases, especially in oral treatment.
  • compositions of the present invention may act synergistically in combination with each other and may further act synergistically in the presence of an additional therapeutic agent. Therefore, the amount of compound(s) and additional therapeutic agent(s) in such compositions will be less than that required in a monotherapy utilizing only that therapeutic agent. In such compositions a dosage of between 0.1-1 g/kg bodyweight/day of the additional therapeutic agent can be administered.
  • the present invention provides a use of metadoxine (or a functional, physiologically acceptable derivative of metadoxine) in the manufacture of a therapeutic composition useful for administering to a subject in need thereof according to any one of the methods of the invention as described herein. In certain embodiments, the present invention provides a use of metadoxine (or a functional, physiologically acceptable derivative of metadoxine) in the manufacture of a therapeutic composition useful for administering to a subject in need thereof according to any one of the compositions of the invention as described herein.
  • the present invention also provides delivery devices and kits comprising a metadoxine composition of the invention, and methods for their use.
  • Delivery devices and kits of the invention may be used for practicing each of the methods of the invention as described herein, e.g., for reducing or preventing symptoms or effects of alcohol consumption; for preventing alcohol intoxication; for reducing or eliminating blood alcohol levels in a subject, or for increasing the mean t max of metadoxine in the blood of a subject, among others.
  • kits and delivery devices of this invention may be included in a container, package or dispenser alone or as part of a kit with labels and instructions for administration.
  • components for performing methods of this invention may be included in a container, package or dispenser alone or as part of a kit with labels and instructions for administration.
  • the components may include means for measuring or monitoring BAC levels before, during or after administration of a metadoxine composition. Measuring or monitoring BAC levels is performed by conventional means known to one of ordinary skill in the art.
  • Delivery devices for use with the compositions and methods of the invention may include any devices for drug delivery known to one of ordinary skill in the art. In certain embodiments, delivery devices are used to maintain sustained or controlled release of the compositions of the invention.
  • metadoxine powder 200 mg were weighted into 4 test tubes. For each test tube 2 g of one aqueous medium was added. Media tested were Dulbecco's PBS pH 7.2, simulated gastric fluid without pepsin USP (SGF pH 1.2), phosphate buffer 10 mM pH 4.5 and simulated intestinal fluid without pancreatin USP (SIF pH 6.8). The material was fully dissolved in all four aqueous media. Additional amount of metadoxine powder was added in 200 mg portions until maximal weight of 1.4 g was achieved.
  • Metadoxine (1.4 g) was dissolved in 2 g of each medium. The final concentration (w/w) was 70%.
  • Metadoxine is freely soluble in various biological fluids.
  • 500 mg tablets were prepared using the same ingredients as the commercial product: microcrystalline cellulose and magnesium stearate.
  • Metadoxine 500 milligrams Avicel PH 101 TM 100 milligrams Magnesium stearate 14 milligrams
  • 500 mg tablets were prepared using same ingredients as the commercial product plus matrix forming polymer. Polymer selection is important to achieving slow release of this highly soluble molecule. This polymer swallows in aqueous media and forms a viscous gel which releases the active material slowly.
  • Metadoxine 500 milligrams Avicel PH 101 TM 72 milligrams Metholose 90SH 250 milligrams Magnesium stearate 21 milligrams
  • Granules were prepared using high shear granulation and vacuum drying. The choice of granulation solvent is important since it has to dissolve the polymer and not the active material.
  • Granules were prepared using high shear granulation and vacuum drying. The dissolution of this composition is by diffusion.
  • Granules were prepared using high shear granulation and vacuum drying. This is an example of an acrylic hydrophobic polymer as a polymeric material.
  • Syrup is prepared using an overhead rotary mixer.
  • Metadoxine granules 950 milligrams per 5 milliliters Strawberry Flavor 20 milligrams per 5 milliliters Sorbitol 70% Solution to complete volume of 5 milliliters
  • Metadoxine slow release granules (from Example 5) are mixed in Sorbitol 70% solution. Strawberry Flavor is added.
  • Metadoxine 800 milligrams Metholose 90SH 200 milligrams Ethocel E10 TM 50 milligrams Final Mix: Magnesium Stearate 10 milligrams Aerosil 200 TM 10 milligrams
  • Granules No 1 enhanced absorption formula
  • Granules No 2 slow release formula
  • Micro granules are prepared using extrusion technology:
  • Metadoxine 2500 milligrams Mannitol 200 milligrams Ethocel E10 TM 50 milligrams Pellets are coated in a Wurster Fluidized Bed Dryer. Kollicoat SR 30D 200 milligrams
  • Pellets are mixed with ice cream and delivered as chocolate coated ice cream cubes.
  • Metadoxine 2300 milligrams Durotak 387-2287 200 milligrams Ethanol 10 milliliters Water 5 milliliters
  • Micro granules are prepared using extrusion technology:
  • the mixture is incorporated inside melt chocolate bar.
  • Micro granules are prepared using extrusion technology:
  • Metadoxine 70 milligrams Metholose 90SH 35 milligrams Pellets are mixed with 60 milligrams Metadoxine Sodium bicarbonate 60 milligrams Citric acid 100 milligrams Sucralose 20 milligrams Cherry flavor 10 milligrams
  • the mixture is filled inside Sachets.
  • a three-way crossover bioavailability test after a single oral administration to three fasting healthy pigs was performed.
  • One arm of the study involves 250 mg immediate release capsules—as a study control (same as current marketed formulation).
  • the second arm of the study involves 250 mg slow-release capsules—test formulation.
  • the third arm of the study involves intake of two 250 mg slow-release capsules (500 mg)—test formulation.
  • the aim of this arm was to establish the optimal dose for the slow-release delivery.
  • slow-release formulations contain higher dose than immediate release formulations and are given less frequently.
  • a total of 3 commercial pigs, 15-18 kg body-weight were treated.
  • the pigs fasted 36 hours before the experiment excluding liquid food 24 hours before the experiment.
  • the animals received the drugs orally according to the treatment arms.
  • 3 ml of Blood were drawn into EDTA tubes before treatment and at 20′, 40′ 1 hr, 2 hr, 4 hr, 8 hr and 24 hr after drug administration. Blood was centrifuged, serum collected and frozen. Serum was analyzed for metadoxine content using a sensitive specific HPLC method.
  • a randomized three-way crossover comparative bioavailability study with 9 healthy fasting subjects receiving single doses of metadoxine formulations on three occasions separated by at least 3 days washout period is performed.
  • One arm of the study involves 500 mg immediate release tablets—as a study control (same as current marketed formulation).
  • the second arm of the study involves 500 mg slow-release tablets—test formulation.
  • the third arm of the study involves intake of two 500 mg slow-release tablets (1000 mg)—test formulation. Blood samples are collected following a predetermined time schedule in each period in order to characterise drug absorption and elimination.
  • Subjects arrive in the morning, after an overnight fasting (at least 10 hours). Each subject is assigned a subject number, which is used for allocation to treatment groups.
  • a baseline (time 0) blood specimen is obtained by aseptic venipuncture. Then each subject ingests a single dose of metadoxine, either a test or a reference product as outlined above, with 200 ml tap water. Venous blood (6 ml each) is then drawn (anticoagulated with EDTA) at 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 5, 6, 8, 10, 12 and 24 hours post dosing (total of 15 in each period). Each blood specimen is identified by a label specifying the study number, subject #, period and sample #.
  • Blood samples are immediately handled and separated by centrifugation and the plasma aliquoted into 3 sets of test tubes and frozen at ⁇ 75° C. (nominal) for analysis of metadoxine concentrations. Following at least a 3 day washout between periods, the procedure is repeated with each subject being dispensed an alternate product.

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CN102784101A (zh) * 2012-08-06 2012-11-21 济南维尔康生化制药有限公司 一种美他多辛注射剂及其制备方法
BR112015006642B1 (pt) * 2012-09-26 2022-08-02 Eurodrug Laboratories B.V Composição farmacêutica de liberação prolongada compreendendo metadoxina e prednisona
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TW201606304A (zh) 2013-09-09 2016-02-16 亞克柏拉有限公司 測定治療反應之方法
CN103989625B (zh) * 2014-05-15 2016-03-02 金伟华 一种由美他多辛作为药用成分制备的栓剂及其制备方法
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US8889715B2 (en) 2008-07-29 2014-11-18 Alcobra Ltd. Substituted pyridoxine-lactam carboxylate salts
US9428458B2 (en) 2008-07-29 2016-08-30 Alcobra Ltd. Substituted pyridoxine-lactam carboxylate-salts
US8710067B2 (en) 2009-06-25 2014-04-29 Alcobra Ltd. Method for the treatment, alleviation of symptoms of, relieving, improving and preventing a cognitive disease, disorder or condition
US9851355B2 (en) 2013-09-09 2017-12-26 Alcobra Ltd. Methods of determining response to therapy
US9851354B2 (en) 2013-09-09 2017-12-26 Alcobra Ltd. Methods of treating fragile X syndrome and related disorders
US20150283192A1 (en) * 2014-04-07 2015-10-08 Gangneung-Wonju National University Industry Academy Cooperation Group Composition and method for enhancing alcohol metabolism
US9901608B2 (en) * 2014-04-07 2018-02-27 Gangneung-Wonju National University Industry Academy Cooperation Group Composition and method for enhancing alcohol metabolism
US11458091B2 (en) 2016-11-18 2022-10-04 Opiant Pharmaceuticals, Inc. Compositions and methods for the treatment of opioid overdose

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IL204528A0 (en) 2011-07-31
EP2173345B1 (de) 2015-08-19
WO2009004629A3 (en) 2010-03-04
RU2010103455A (ru) 2011-08-10
CN106890130A (zh) 2017-06-27
AU2008272420B2 (en) 2014-08-14
JP2010531872A (ja) 2010-09-30
ES2552717T3 (es) 2015-12-01
DK2173345T3 (en) 2015-11-23
PT2173345E (pt) 2015-11-19
HUE028078T2 (en) 2016-11-28
RU2526157C2 (ru) 2014-08-20
US8476304B2 (en) 2013-07-02
KR20160054632A (ko) 2016-05-16
JP5661900B2 (ja) 2015-01-28
EP2716288A1 (de) 2014-04-09
CN101795687A (zh) 2010-08-04
KR20100045457A (ko) 2010-05-03
US20150209338A1 (en) 2015-07-30
JP2014058542A (ja) 2014-04-03
KR20150046394A (ko) 2015-04-29
IL187159A0 (en) 2009-02-11
BRPI0814617A2 (pt) 2014-09-30
CA2691973C (en) 2016-06-28
WO2009004629A2 (en) 2009-01-08
EP2173345A4 (de) 2010-09-29
SI2173345T1 (sl) 2015-12-31
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EP2173345A2 (de) 2010-04-14
US9808446B2 (en) 2017-11-07
US20120277270A1 (en) 2012-11-01
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AU2008272420A1 (en) 2009-01-08
CY1116931T1 (el) 2017-04-05

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