WO2003094886A2 - Preparations pharmaceutiques - Google Patents

Preparations pharmaceutiques Download PDF

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Publication number
WO2003094886A2
WO2003094886A2 PCT/IB2003/002368 IB0302368W WO03094886A2 WO 2003094886 A2 WO2003094886 A2 WO 2003094886A2 IB 0302368 W IB0302368 W IB 0302368W WO 03094886 A2 WO03094886 A2 WO 03094886A2
Authority
WO
WIPO (PCT)
Prior art keywords
dosage form
desmopressin
pharmaceutical dosage
water
orodispersible
Prior art date
Application number
PCT/IB2003/002368
Other languages
English (en)
Other versions
WO2003094886A3 (fr
Inventor
Lars Anders Ragnar Nilsson
Hans Lindner
Jørgen WITTENDORFF JENSEN
Original Assignee
Ferring Bv
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GBGB0210397.6A external-priority patent/GB0210397D0/en
Priority to CA002484724A priority Critical patent/CA2484724C/fr
Priority to BR0309819-2A priority patent/BR0309819A/pt
Priority to MXPA04010926A priority patent/MXPA04010926A/es
Priority to DE60307082A priority patent/DE60307082D1/de
Priority to NZ535861A priority patent/NZ535861A/en
Priority to US10/513,437 priority patent/US7560429B2/en
Priority to JP2004502972A priority patent/JP2006502972A/ja
Priority to AU2003233118A priority patent/AU2003233118B8/en
Priority to KR1020047017821A priority patent/KR100632455B1/ko
Priority to DK03727870.2T priority patent/DK1501534T5/da
Priority to ES03727870.2T priority patent/ES2266820T4/es
Priority to DE2003607082 priority patent/DE60307082T4/de
Priority to SI200330434T priority patent/SI1501534T1/sl
Priority to EP03727870A priority patent/EP1501534B1/fr
Application filed by Ferring Bv filed Critical Ferring Bv
Publication of WO2003094886A2 publication Critical patent/WO2003094886A2/fr
Publication of WO2003094886A3 publication Critical patent/WO2003094886A3/fr
Priority to IL164519A priority patent/IL164519A/en
Priority to HR20041152A priority patent/HRP20041152B1/xx
Priority to NO20045345A priority patent/NO335167B1/no
Priority to HK05106142A priority patent/HK1074393A1/xx
Priority to US12/487,116 priority patent/US7947654B2/en
Priority to US13/110,619 priority patent/US8802624B2/en
Priority to US14/326,939 priority patent/US9220747B2/en
Priority to US14/947,261 priority patent/US9504647B2/en
Priority to US15/333,503 priority patent/US9919025B2/en
Priority to US15/881,123 priority patent/US10307459B2/en

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00—Medicinal preparations characterised by special physical form
    • A61K9/0012—Galenical forms characterised by the site of application
    • A61K9/0053—Mouth and digestive tract, i.e. intraoral and peroral administration
    • A61K9/0056—Mouth soluble or dispersible forms; Suckable, eatable, chewable coherent forms; Forms rapidly disintegrating in the mouth; Lozenges; Lollipops; Bite capsules; Baked products; Baits or other oral forms for animals
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P13/00—Drugs for disorders of the urinary system
    • A61P13/10—Drugs for disorders of the urinary system of the bladder
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00—Medicinal preparations characterised by special physical form
    • A61K9/20—Pills, tablets, discs, rods
    • A61K9/2004—Excipients; Inactive ingredients
    • A61K9/2013—Organic compounds, e.g. phospholipids, fats
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00—Medicinal preparations characterised by special physical form
    • A61K9/20—Pills, tablets, discs, rods
    • A61K9/2004—Excipients; Inactive ingredients
    • A61K9/2013—Organic compounds, e.g. phospholipids, fats
    • A61K9/2018—Sugars, or sugar alcohols, e.g. lactose, mannitol; Derivatives thereof, e.g. polysorbates
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00—Medicinal preparations characterised by special physical form
    • A61K9/20—Pills, tablets, discs, rods
    • A61K9/2004—Excipients; Inactive ingredients
    • A61K9/2022—Organic macromolecular compounds
    • A61K9/2063—Proteins, e.g. gelatin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00—Medicinal preparations characterised by special physical form
    • A61K9/20—Pills, tablets, discs, rods
    • A61K9/2095—Tabletting processes; Dosage units made by direct compression of powders or specially processed granules, by eliminating solvents, by melt-extrusion, by injection molding, by 3D printing

Definitions

  • 'T ⁇ IS INVENTION relates to pharmaceutical formulations, to methods of making them and to their use in the treatment and prophylaxis of diseases in mammals, particularly humans.
  • desmopressin can be administered as a solid orodispersible dosage form which provides improved bioavailability compared to conventional oral tablets of desmopressin.
  • an orodispersible pharmaceutical dosage form of desmopressin is provided.
  • the formulation will typically be solid. It may disperse rapidly in the mouth, for example within 10, 5, 2 seconds, or even within 1 second, in increasing order of preference. Such formulations are termed 'orodispersible'.
  • the formulation will typically comprise a suitable carrier for this purpose, which will be pharmaceutically acceptable (or veterinarily acceptable in the case of administration to non-human animals).
  • the daily dosage of desmopressin, measured as the free base will generally be from 0.5 or 1 ⁇ g to 1 mg per dosage form. In one preferred dosage range, the dosage will typically range from 2 ⁇ g to 800 ⁇ g per dosage form and preferably from 10 ⁇ g to 600 ⁇ g.
  • Relative low doses are also specifically contemplated, for example from 0.5 ⁇ g to 75 ⁇ g, preferably 0.5 or 1 ⁇ g to 50 ⁇ g.
  • this will typically be the dose per dosage form.
  • the daily dose is administered in two or more dosages, as will typically be the case for central diabetes insipidus, the amount of active compound per dosage form will be reduced accordingly.
  • Pharmaceutical dosage forms of the present invention are adapted to supply the active ingredient to the oral cavity.
  • the active may be absorbed across the sublingual mucosa, and/or otherwise from the oral cavity (e.g. across the buccal and/or gingival mucosa) and/or from the gastrointestinal tract for systemic distribution.
  • the sugar may be used in the formulation in an amount of at least 50 w/w%, preferably 80 w/w% or more, more preferably 90 w/w% or more, based on the total solid components, although it may vary depending on the quality and quantity of the active ingredient to be used.
  • agar examples include agar powders PS-7 and PS-8 (manufactured by Ina Shokuhin).
  • Agar may be used in an amount of from 0.12 to 1.2 w/w%, preferably from 0.2 to 0.4 w/w%, based on the solid components.
  • compositions known for delivering active ingredients for absorption from the oral cavity are the dosage forms disclosed in US-A-6024981 and US-A-6221392. They are hard, compressed, rapidly dissolvable dosage forms adapted for direct oral dosing comprising: an active ingredient and a matrix including a non-direct compression filter and a lubricant, said dosage form being adapted to rapidly dissolve in the mouth of a patient and thereby liberate said active ingredient, and having a friability of about 2% or less when tested according to the U.S.P., said dosage form optionally having a hardness of at least about 15 Newtons (N), preferably from 15-50 N.
  • N Newtons
  • dosage forms in accordance with this embodiment of the invention dissolve in about 90 seconds or less (preferably 60 seconds or less and most preferably 45 seconds or less) in the patient's mouth. It is also often desirable that the dosage form include at least one particle.
  • the particle would be the active ingredient and a protective material. These particles can include rapid release particles and or sustained release particles.
  • a hard, compressed, rapidly dissolving tablet adapted for direct oral dosing.
  • the tablet includes particles made of an active ingredient and a protective material. These particles are provided in an amount of between about 0.01 and about 75% by weight based on the weight of the tablet.
  • the tablet also includes a matrix made from a non-direct compression filler, a wicking agent, and a hydrophobic lubricant.
  • the tablet matrix comprises at least about 60% rapidly water soluble ingredients based on the total weight of the matrix material.
  • the tablet has a hardness of between about 15 and about 50 Newtons, a friability of less than 2% when measured by U.S.P. and is adapted to dissolve spontaneously in the mouth of a patient in less than about 60 seconds and thereby liberate said particles and be capable of being stored in bulk.
  • a very fine grained or powdered sugar known as a non-direct compression sugar may be used as a filler in the matrix of this embodiment the present invention.
  • This material in part because of its chemical composition and in part because of its fine particle size, will dissolve readily in the mouth in a mater of seconds once it is wetted by saliva. Not only does this mean that it can contribute to the speed at which the dosage form will dissolve, it also means that while the patient is holding the dissolving dosage form in his or her mouth, the filler will not contribute a "gritty" or "sandy” texture thus adversely affecting the organoleptic sensation of taking the dosage form.
  • direct compression versions of the same sugar are usually granulated and treated to make them larger and better for compaction.
  • Dissolution time in the mouth can be measured by observing the dissolution time of the tablet in water at about 37°C.
  • the tablet is immersed in the water without forcible agitation or with minimal agitation.
  • the dissolution time is the time from immersion to substantially complete dissolution of the rapidly water soluble ingredients of the tablet as determined by visual observation.
  • sugars and sugar alcohols which meet the specifications discussed above.
  • sugars and sugar alcohols include, without limitation, dextrose, mannitol, sorbitol, lactose and sucrose.
  • dextrose for example, can exist as either a direct compression sugar, i.e., a sugar which has been modified to increase its compressibility, or a non-direct compression sugar.
  • the balance of the formulation can be matrix.
  • the percentage of filler can approach 100%.
  • the amount of non-direct compression filler useful in accordance with the present invention ranges from about 25 to about 95%, preferably between about 50 and about 95% and more preferably from about 60 to about 95%.
  • Protective materials useful in accordance with this embodiment of the present invention may include any of the polymers conventionally utilized in the formation of microparticles, matrix-type microparticles and microcapsules. Among these are cellulosic materials such as naturally occurring cellulose and synthetic cellulose derivatives; acrylic polymers and vinyl polymers. Other simple polymers include proteinaceous materials such as gelatin, polypeptides and natural and synthetic shellacs and waxes. Protective polymers may also include ethylcellulose, methylcellulose, carboxymethyl cellulose and acrylic resin material sold under the registered trade mark EUDRAGIT by Rhone Pharma GmbH ofmannstadt, Germany.
  • the matrix may also include wicking agents, non-effervescent disintegrants and effervescent disintegrants.
  • Wicking agents are compositions which are capable of drawing water up into the dosage form. They help transport moisture into the interior of the dosage form. In that way the dosage form can dissolve from the inside, as well as from the outside.
  • wicking agents include a number of traditional non- effervescent disintegration agents. These include, for example, microcrystalline cellulose (AVICEL PH 200, AVICEL PH 101), Ac-Di-Sol (Croscarmelose Sodium) and PVP-XL (a crosslinked polyvinylpyrrolidone); starches and modified starches, polymers, and gum such as arabic and xanthan. Hydroxyalkyl cellulose such as hydroxymethylcellulose. hydroxypropylcellulose and hydroxyopropylmethylcellulose, as well as compounds such as carbopol may be used as well.
  • the conventional range of non-effervescent disintegrant agents used in conventional tablets can be as high as 20%. However, generally, the amount of disintegration agent used ranges from between about 2 and about 5%, according to the Handbook of Pharmaceutical Excipients.
  • the amount of wicking agents used may range from between 2 to about 12% and preferably from between 2 to about 5%. It is also possible, of course, to include non-effervescent disintegrants which may not act to wick moisture, if desirable. In either event, it is preferable to use either rapidly water soluble, non-effervescent disintegrants or wicking agents and/or to minimize the use of generally non-water soluble wicking agents or non-effervescent disintegrants. Non- rapidly dissolvable, non-rapidly water soluble elements if used in sufficient quantity, can adversely affect the organoleptic properties of the tablets as they dissolve within the mouth and therefore should be minimized.
  • wicking agents or non- effervescent disintegrants which are rapidly water soluble as discussed herein can be used in greater quantity and they will not add to the grittiness of the formulation during dissolution.
  • Preferred wicking agents in accordance with the present invention include crosslinked PVP, although, the amounts of these must be controlled as they are not rapidly water soluble.
  • the effervescent couple in combination with the other recited ingredients to improve the disintegration profile, the organoleptic properties of the material and the like.
  • the effervescent couple is provided in an amount of between about 0.5 and about 50%, and more preferably, between about 3 and about 15% by weight, based on the weight of the finished tablet. It is particularly preferred that sufficient effervescent material be provided such that the evolved gas is less than about 30 cm, upon exposure to an aqueous environment.
  • the term "effervescent couple" includes compounds which evolve gas.
  • the preferred effervescent couple evolve gas by means of a chemical reaction which takes place upon exposure of the effervescent disintegration couple to water and/or to saliva in the mouth. This reaction is most often the result of the reaction of a soluble acid source and an alkali monohydrogencarbonate or other carbonate source.
  • the reaction of these two general compounds produces carbon dioxide gas upon contact with water or saliva.
  • Such water-activated materials must be kept in a generally anhydrous state and with little or no absorbed moisture or in a stable hydrated form, since exposure to water will prematurely disintegrate the tablet.
  • the acid sources may be any which are safe for human consumption and may generally include food acids, acid and hydrite antacids such as, for example: citric, tartaric, malic, fumaric, adipic, and succinics.
  • Carbonate sources include dry solid carbonate and bicarbonate salt such as, preferably, sodium bicarbonate, sodium carbonate, potassium bicarbonate and potassium carbonate, magnesium carbonate and the like. Reactants which evolve oxygen or other gasses and which are safe for human consumption are also included.
  • a non-direct compression filler eliminates the need for many conventional processing steps such as granulation and/or the need to purchase more expensive pre- granulated, compressible fillers.
  • the resulting dosage form is a balance of performance and stability. It is robust enough to be conventionally produced using direct compression. It is robust enough to be stored or packaged in bulk. Yet, it rapidly dissolves in the mouth while minimizing the unpleasant feel of conventional disintegrating tablets to the extent possible.
  • Formulations in accordance with this embodiment of the invention may be made by a method including the steps of:
  • formulations known for delivering active ingredients for absorption from the oral cavity are the dosage forms disclosed in US-A-6200604, which comprise an orally administrable medicament in combination with an effervescent agent used as penetration enhancer to influence the permeability of the medicament across the buccal, sublingual, and gingival mucosa.
  • the medicament is desmopressin, which is administered in some embodiments across the sublingual mucosa.
  • effervescent agents can be used alone or in combination with other penetration enhancers, which leads to an increase in the rate and extent of oral absorption of an active drug.
  • effervescent agent includes compounds which evolve gas.
  • the preferred effervescent agents evolve gas by means of a chemical reaction which takes place upon exposure of the effervescent agent (an effervescent couple) to water and/or to saliva in the mouth. This reaction is most often the result of the reaction of a soluble acid source and a source of carbon dioxide such as an alkaline carbonate or bicarbonate. The reaction of these two general compounds produces carbon dioxide gas upon contact with water or saliva.
  • Such water-activated materials must be kept in a generally anhydrous state and with little or no absorbed moisture or in a stable hydrated form, since exposure to water will prematurely disintegrate the tablet.
  • the effervescent agent(s) useful in this embodiment of the present invention is not always based upon a reaction which forms carbon dioxide. Reactants which evolve oxygen or other gasses which are safe for human consumption are also considered within the scope. Where the effervescent agent includes two mutually reactive components, such as an acid source and a carbonate source, it is preferred that both components react completely. Therefore, an equivalent ratio of components which provides for equal equivalents is preferred. For example, if the acid used is diprotic, then either twice the amount of a mono-reactive carbonate base, or an equal amount of a di- reactive base should be used for complete neutralization to be realised. However, in other embodiments of the present invention, the amount of either acid or carbonate source may exceed the amount of the other component. This may be useful to enhance taste and/or performance of a tablet containing an overage of either component. In this case, it is acceptable that the additional amount of either component may remain unreacted.
  • the aqueous solubility of the drug should preferably not be compromised by the effervescent and pH adjusting substance, such that the dosage forms permit a sufficient concentration of the drug to be present in the unionised form.
  • the percentage of the pH adjusting substance and/or effervescent should therefore be adjusted depending on the drug.
  • Suitable pH adjusting substance for use in the present invention include any weak acid or weak base in amounts additional to that required for the effervescence or, preferably, any buffer system that is not harmful to the oral mucosa.
  • Suitable pH adjusting substance for use in the present invention include, but are not limited to, any of the acids or bases previously mentioned as effervescent compounds, disodium hydrogen phosphate, sodium dihydrogen phosphate and the equivalent potassium salt.
  • a dosage form according to this embodiment of the present invention may also include suitable non-effervescent disintegration agents.
  • suitable non-effervescent disintegration agents include: microcrystalline, cellulose, croscarmelose sodium, crospovidone, starches, corn starch, potato starch and modified starches thereof, sweeteners, clays, such as bentonite, alginates, gums such as agar, guar, locust bean, karaya, pectin and tragacanth.
  • Disintegrants may comprise up to about 20 weight percent and preferably between about 2 and about 10% of the total weight of the composition.
  • the dosage forms may also include glidants, lubricants, binders, sweeteners, flavouring and colouring components. Any conventional sweetener or flavouring component may be used. Combinations of sweeteners, flavouring components, or sweeteners and flavouring components may likewise be used.
  • binders which can be used include acacia, tragacanth, gelatin, starch, cellulose materials such as methyl cellulose and sodium carboxy methyl cellulose, alginic acids and salts thereof, magnesium aluminium silicate, polyethylene glycol, guar gum, polysaccharide acids, bentonites, sugars, invert sugars and the like. Binders may be used in an amount of up to 60 weight percent and preferably about 10 to about 40 weight percent of the total composition.
  • Colouring agents may include titanium dioxide, and dyes suitable for food such as those known as F.D.& C. dyes and natural coloring agents such as grape skin extract, beet red powder, beta-carotene, annato, carmine, turmeric, paprika, etc.
  • the amount of colouring used may range from about 0.1 to about 3.5 weight percent of the total composition.
  • Flavours incorporated in the composition may be chosen from synthetic flavours oils and flavouring aromatics and/or natural oils, extracts from plants, leaves, flowers, fruits and so forth and combinations thereof. These may include cinnamon oil, oil of wintergreen, peppermint oils, clove oil, bay oil, anise oil, eucalyptus, thyme oil, cedar leave oil, oil of nutmeg, oil of sage, oil of bitter almonds and cassia oil. Also useful as flavours are vanilla, citrus oil, including lemon, orange, grape, lime and grapefruit, and fruit essences, including apple, pear, peach, strawberry, raspberry, cherry, plum, pineapple, apricot and so forth.
  • the most preferred orodispersible solid pharmaceutical dosage forms according to the invention comprise desmopressin and an open matrix network carrying the desmopressin, the open matrix network being comprised of a water-soluble or water- dispersible carrier material that is inert towards desmopressin.
  • Pharmaceutical dosage forms comprising open matrix networks are known from GB-A- 1548022, to which reference is made for further details.
  • Pharmaceutical dosage forms of the invention can be rapidly disintegrated by water.
  • rapidly disintegrated is meant that the shaped articles are disintegrated in water within 10 seconds.
  • the shaped article disintegrates (dissolves or disperses) within 5 seconds or even two seconds or one second or less.
  • the disintegration time is measured by a procedure analogous to the Disintegration Test for Tablets, B.P. 1973. The procedure is described in GB-A-1548022 and outlined below. Apparatus
  • open matrix network there is meant a network of water-soluble or water- dispersible carrier material having interstices dispersed throughout.
  • the open matrix network of carrier material is of generally low density.
  • the density may be within the range 10 to 200 mg cc e.g. 10 to 100 mg/cc, preferably 30 to 60 mg/cc.
  • the density of the shaped article may be affected by the amount of active ingredient, or any other ingredients, incorporated into the article and may be outside the above mentioned preferred limits for the density of the matrix network.
  • the open matrix network which is similar in structure to a solid foam enables a liquid to enter the product through the interstices and permeate through the interior.
  • Permeation by aqueous media exposes the carrier material of both the interior and exterior of the product to the action of the aqueous media whereby the network of carrier material is rapidly disintegrated.
  • the open matrix structure is of a porous nature and enhances disintegration of the product as compared with ordinary solid shaped pharmaceutical dosage forms such as tablets, pills, capsules, suppositories and pessaries. Rapid disintegration results in rapid release of the active ingredient carried by the matrix.
  • the carrier material used in the product of the invention may be any water-soluble or water-dispersible material that is pharmacologically acceptable or inert to the chemical and which is capable of forming a rapidly disintegratable open matrix network. It is preferred to use water-soluble material as the carrier since this results in the most rapid disintegration of the matrix when the product is placed in an aqueous medium.
  • a particularly advantageous carrier may be formed from polypeptides such as gelatin, particularly gelatin which is particularly hydrolysed, e.g. by heating in water.
  • the gelatin may be partially hydrolysed by heating a solution of the gelatin in water, e.g. in an autoclave at about 120°C. for up to 2 hours, e.g.
  • the hydrolysed gelatin is preferably used at concentrations of about 1 to 6% or 8% weight/vol., most preferably at 2 to 4% e.g. about 3%, or at 4 to 6% e.g. about 5%. As is apparent from the Examples herein, these concentrations refer to the total formulation prior to removal of the water for example by freeze drying.
  • mammalian derived gelatin may be used, it has an unpleasant taste and thus necessitates the use of sweeteners and flavours to mask the taste of the gelatin in addition to any sweeteners and flavours which may be required to mask the taste of the active ingredient.
  • the heating step necessary with the use of mammalian gelatin increases processing times and incurs heating costs thereby increasing the overall costs of the process. Therefore, the use of fish gelatin, especially non-gelling fish gelatin, is preferred, especially for desmopressin.
  • carrier materials may be used in place of partially hydrolysed gelatin or fish gelatin, for example polysaccharides such as hydrolysed dextran, dextrin and alginates (e.g. sodium alginate) or mixtures of above mentioned carriers with each other or with other carrier materials such as polyvinyl alcohol, polyvinylpyrrolidine or acacia.
  • Modified starch may also be used in place of gelatin, as described in WO-A-0044351, to which reference is made for further details.
  • carrier materials which may be present in addition to, or in some cases in place of, the above carriers include: gums such as tragacanth, xanthan, carageenan, and guar; mucilages including linseed mucilage and agar; polysaccharides and other carbohydrates such as pectin and starch and its derivatives, particularly soluble starch and dextrates; water soluble cellulose derivatives, such as hydroxyethylmethyl cellulose, hydroxypropylmethyl cellulose and hydroxypropyl cellulose; and carbomer.
  • gums such as tragacanth, xanthan, carageenan, and guar
  • mucilages including linseed mucilage and agar
  • polysaccharides and other carbohydrates such as pectin and starch and its derivatives, particularly soluble starch and dextrates
  • water soluble cellulose derivatives such as hydroxyethylmethyl cellulose, hydroxypropylmethyl cellulose and
  • a filler may also be present.
  • the filler desirably will also assist in the rapid dissolution or dispersion of the dosage form in the mouth.
  • suitable fillers include sugars such as mannitol, dextrose, lactose, sucrose and sorbitol.
  • the filler is preferably used at concentrations of about 0 to 6% or 8% weight/vol., most preferably at 2 to 4% e.g. about 3%, or at 4 to 6% e.g. about 5%. Again, these concentrations refer to the total formulation prior to removal of the water for example by freeze drying.
  • compositions of the invention may be in the form of shaped articles. They may incorporate ingredients in addition to the active ingredient(s).
  • the pharmaceutical dosage form of the present invention may incorporate pharmaceutically acceptable adjuvants.
  • adjuvants include, for example, colouring agents, flavouring agents, preservatives (e.g. bacteriostatic agents), and the like.
  • US-A-5188825 teaches that water soluble active agents should be bonded to an ion exchange resin to form a substantially water insoluble active agent/resin complex; although that teaching may be practised here (for which reference to US-A-5188825 is made for further details), it has been found in the development of the present invention that water soluble peptides such as desmopressin may be formulated in solid dosage forms of the invention without the need for bonding to an ion exchange resin. Such dosage forms may therefore be free of an ion exchange resin.
  • a surfactant may be present, as taught in US-A-5827541, to which reference is made for further details.
  • a lipid such as a lecithin may be present to improve patient acceptability, as taught in US-A-6156339, to which reference is made for further details.
  • Other strategies for taste masking include conversion of a soluble salt to a less soluble salt or to the free base, as taught by US-A-5738875 and US-A-5837287, and the use of a process disclosed in US-A-5976577 wherein, prior to freeze drying, a suspension of uncoated or coated coarse particles of the pharmaceutically active substance(s) in a carrier material is cooled to reduce the viscosity and minimize release of the active substance during processing, as well as beyond the point of disintegration of the form in the mouth, to minimise bad taste from the peptide; reference is made to the cited patents for further details.
  • xanthan gum may be present, particularly when the carrier is formed from gelatin, as the xanthan gum may act as a gelatin flocculating agent, as disclosed in US-A-5631023, to which reference is made for further details.
  • one or more amino acids having from about 2 to 12 carbon atoms may be present, when the matrix is selected from the group consisting of gelatin, pectin, soy fibre protein and mixtures thereof.
  • the preferred amino acid is glycine, while the preferred matrix forming agent is gelatin and/or pectin; in a particularly preferred embodiment, the dosage form additionally comprises mannitol. All excipients will be chosen to be pharmaceutically acceptable.
  • Pharmaceutical dosage forms of the present invention may be prepared by a process as described in GB-A- 1548022, which comprises subliming solvent from a composition comprising the pharmaceutical substance and a solution of the carrier material in a solvent, the composition being in the solid state in a mould.
  • the sublimation is preferably carried out by freeze drying a composition comprising the active ingredient and a solution of the carrier material in a solvent.
  • the composition may include additional ingredients, such as those mentioned above.
  • the solvent is preferably water but it may contain a co-solvent (such as an alcohol e.g. tert-butyl alcohol) to improve the solubility of the chemical.
  • the composition may also contain a surfactant e.g. Tween 80 (polyoxyethylene (20) sorbitan mono-oleate). The surfactant may help to prevent the freeze dried product sticking to the surface of the mould. It may also aid in the dispersion of the active ingredient.
  • the composition may contain a pH adjusting agent to adjust the pH of a solution from which the dosage form is prepared within the range of from 3 to 6, preferably from 3.5 to 5.5, and most preferably from 4 to 5, for example 4.5 or 4.8.
  • Citric acid is a preferred pH adjusting agent, but others including hydrochloric acid, malic acid can be used. Such non-volatile pH adjusting agents will not be removed by the freeze drying or other sublimation process and so may be present in the final product.
  • the mould may comprise a series of cylindrical or other shape depressions in it, each of a size corresponding to the desired size of the shaped article.
  • the size of the depression in the mould may be larger than the desired size of the article and after the contents have been freeze dried the product can be cut into the desired size (for example thin wafers).
  • the mould is preferably a depression in a sheet of filmic material.
  • the filmic material may contain more than one depression.
  • the filmic material may be similar to that employed in conventional blister packs which are used for packaging oral contraceptive tablets and like medicament forms.
  • the filmic material may be made of thermoplastic material with the depressions formed by thermoforming.
  • the preferred filmic material is a polyvinyl chloride film. Laminates of filmic material may also be used.
  • the mould comprises a metal plate (e.g. an aluminium plate) containing one or more depressions.
  • a cooling medium e.g. liquid nitrogen or solid carbon dioxide.
  • the mould When the mould is cooled a predetermined amount of water containing the carrier material, the active ingredient and any other desired ingredient is fed into the depression(s). When the contents of the depression(s) are frozen the mould is subjected to reduced pressure and, if desired, controlled application of heat to aid the sublimation.
  • pharmaceutical dosage forms of the present invention may be prepared by a process as described in GB-A-2114440 which comprises freezing a composition comprising a solution in a first solvent of a water-soluble or water- dispersible carrier material that is inert towards the active ingredient, subliming the first solvent from the frozen composition so as to produce a product having a network of carrier material, adding to said product a solution or suspension of a second non-aqueous solvent containing a predetermined amount of the active ingredient and allowing or causing the second solvent to evaporate.
  • GB-A-2114440 for further details.
  • pharmaceutical dosage forms of the present invention may be prepared by a process as described in GB-A-2111184, which comprises introducing the liquid medium in the form of droplets beneath the surface of a cooling liquid which is maintained at a temperature lower than the freezing point of the liquid medium, the cooling liquid being immiscible with, and inert with respect to, the liquid medium and having a density greater than that of both the liquid medium and the resulting frozen particles such that as the liquid droplets float upwards in the cooling liquid towards the surface thereof, they are frozen to form spherical particles.
  • the frozen spherical particles can be collected at or near the upper surface of the cooling liquid.
  • Dosage forms in accordance with the invention have improved bioavailability. They are intended to be taken orally, and are highly suitable for that purpose. They disperse rapidly in the mouth, and may for example be placed under the tongue (sub-lingually), or they may be placed on the tongue or against the cheek or gingiva.
  • a dosage form as described above for use in medicine particularly, for voiding postponement, incontinence, primary nocturnal enuresis (PNE), nocturia and central diabetes insipidus.
  • the invention provides a method of postponing voiding, treating or preventing incontinence, primary nocturnal enuresis (PNE), nocturia and/or central diabetes insipidus, the method comprising administering an effective and generally non-toxic amount of desmopressin to a subject in an orodispersible pharmaceutical dosage form, for example in a dosage form as described above. Any other disease or condition treatable or preventable by desmopressin may similarly be addressed by means of the invention.
  • the invention therefore extends to the use of desmopressin in the manufacture of an orodispersible pharmaceutical formulation.
  • the invention also extends to a pack comprising an orodispersible pharmaceutical dosage form of desmopressin together with instructions to place the dosage form in a patient's mouth.
  • Encompassed within the invention is also a method for preparing a packaged dosage form of desmopressin, the method comprising bringing into association an orodispersible pharmaceutical dosage form of desmopressin and instructions to place the dosage form in a patient's mouth.
  • the instructions may for example be printed on packaging encompassing the dosage form when sold or dispensed, or may be on a product information leaflet or insert within the packaging.
  • peptides apart from desmopressin are formulatable in the formulations described above.
  • the invention therefore extends to a orodispersible pharmaceutical dosage form of a pharmaceutically active peptide.
  • a solid pharmaceutical dosage form for example for oral administration, the dosage form comprising a pharmaceutically active peptide and an open matrix network carrying the peptide, the open matrix network being comprised of a water-soluble or water-dispersible carrier material that is inert towards the peptide.
  • oral vaccines made from fast dissolving dosage forms are known from WO-A- 9921579, there is no disclosure of pharmaceutically active peptides retaining their activity after administration.
  • the experimental work in WO-A-9921579 merely shows the presence in saliva of IgA antibodies to tetanus toxoid following the administration of tetanus toxoid by means of an adjuvanted fast dissolving dosage vaccine formulation.
  • Formulations of the present invention are not vaccines and do not include adjuvants.
  • Pharmaceutical dosage forms of this aspect of the invention contain a pharmaceutically active peptide.
  • Such peptides may be directly active per se or they may have one or more active metabolites, i.e. they may be prodrugs for the primary or true active principle.
  • the peptides may have for example from 2 to 20, preferably from 5 to 15, amino acid residues (at least some of which may be D-isomers, although L-isomers will generally be predominant).
  • the peptides may be linear, branched or cyclic, and may include natural residues or substituents or residues or substituents not found in natural peptides or proteins either commonly or at all.
  • Pharmaceutically acceptable salts, simple adducts and tautomers are included where appropriate.
  • peptides usefully formulated by means of the invention include somatostatin and its analogues including Cyclo(MeAla-Tyr-D-Trp-Lys-Val-Phe) and Cyclo(Asn-Phe-Phe-D-Trp-Lys-Thr-Phe-GABA), enkephalins including Met 5 - enkephalin and Leu 5 -enkephalin, oxytocin analogues such as atosiban (l-deamino-2-D- Tyr-(OEt)-4-Thr-8-Orn-oxytocin), GnRH analogues such as triptorelin (6-D-Trp-GnRH), leuprolide ([D-Leu 6 , Pro 8 -NHEt]-GnRH), degarelix (Ac-D-2Nal-D-4Cpa-D-3Pal-Ser- 4Aph(L-Hydroorot
  • Dosage will be as determined by the physician or clinician, depending on the nature of the peptide, the nature of the disease or condition being treated or prevented, and other factors.
  • the invention also provides a method of treating or preventing a disease or condition which is treatable or preventable by a peptide, the method comprising administering an effective and generally non-toxic amount of the peptide to a subject in a dosage form as described above.
  • Spray-dried fish gelatin (4g) and mannitol (3g) are added to a glass beaker.
  • Purified water (93 g) is then added and solution effected by stirring using a magnetic follower.
  • the pH is checked and adjusted to 4.8 with citric acid as necessary.
  • a Gilson pipette can then be used to deliver 500 mg of this solution into each one of a series of pre-formed blister pockets having a pocket diameter of about 16 mm.
  • the blister laminate may comprise PVC coated with PVdC.
  • the dosed units are then frozen at a temperature of -110°C in a freeze tunnel with a residence time of 3.2 minutes and the frozen units are then held in an upright freezer for a time greater than 1.5 hours at a temperature of -25°C ( ⁇ 5°C).
  • the units are then freeze-dried overnight with an initial shelf temperature of 10°C rising to +20°C at a pressure of 0.5 mbar.
  • the units can be checked for moisture prior to unloading by the drying trace and by the pressurised moisture check.
  • Desmopressin PolyPeptide Laboratories, Sweden 200 ⁇ g
  • Example 1 The procedure of Example 1 herein is followed, except that the amount of desmopressin per unit dosage form was 400 ⁇ g.
  • EXAMPLE 3 800 ⁇ g Desmopressin Orodispersible Dosage Form
  • Example 1 The procedure of Example 1 herein is followed, except that the amount of desmopressin per unit dosage form was 800 ⁇ g.
  • a desmopressin dosage form orodispersible dosage form was prepared using the following ingredients per unit dosage form:
  • Desmopressin PolyPeptide Laboratories, Sweden 200 ⁇ g
  • Example 4 The procedure of Example 4 herein was followed, except that the amount of desmopressin per unit dosage form was 400 ⁇ g.
  • Example 4 The procedure of Example 4 herein was followed, except that the amount of desmopressin per unit dosage form was 800 ⁇ g.
  • Comparative Example 2 The procedure of Comparative Example 2 was followed, except that the amount of desmopressin was 100 ⁇ g per tablet.
  • the concentration of desmopressin in plasma was determined by a validated RIA method.
  • the pharmacokinetics of desmopressin is linear, when administered as the orodispersible dosage form of Example 4, 5 or 6.
  • the mean elimination half-life was determined to be 2.24 hours.
  • oral administration of desmopressin maximum plasma concentrations were observed at 1.06 hours (2 x 100 ⁇ g) or 1.05 hours (1 x 200 ⁇ g) after dosing.
  • the maximum plasma concentration was 13.2 and 15.0 pg/ml after an oral dose of 2 x 100 ⁇ g and 1 x 200 ⁇ g, respectively.
  • the bioavailability was determined to be 0.13% (2 x 100 ⁇ g) or 0.16% (1 x 200 ⁇ g).

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Abstract

On peut obtenir de la desmopressine présentant une bonne biodisponibilité au moyen d'une forme posologique pouvant se disperser dans la bouche. Les formes posologiques préférées comportent de la desmopressine et un réseau matriciel ouvert du type support hydrosoluble inerte ou pouvant se disperser dans l'eau. La desmopressine ainsi formulée peut servir à retarder la miction ou à traiter ou prévenir l'incontinence, l'énurésie nocturne primaire, la nycturie ou le diabète insipide d'origine centrale. On peut également formuler de cette manière des peptides autres que la desmopressine.
PCT/IB2003/002368 2002-05-07 2003-05-07 Preparations pharmaceutiques WO2003094886A2 (fr)

Priority Applications (24)

Application Number Priority Date Filing Date Title
BR0309819-2A BR0309819A (pt) 2002-05-07 2003-05-07 Formulações farmacêuticas
EP03727870A EP1501534B1 (fr) 2002-05-07 2003-05-07 Forme galenique orodispersible de desmopressin
SI200330434T SI1501534T1 (sl) 2002-05-07 2003-05-07 Desmopresin v dozirni obliki, disperzibilni v ustni votlini
DE60307082A DE60307082D1 (de) 2002-05-07 2003-05-07 In der mundhöhle dispergierbare phamarzeutische zusammensetzung mit desmopressin
NZ535861A NZ535861A (en) 2002-05-07 2003-05-07 Desmopressin acetate in an orodispersible dosage form that disintegrates in the mouth within 10 seconds
US10/513,437 US7560429B2 (en) 2002-05-07 2003-05-07 Orodispersible dosage forms of desmopressin acetate
JP2004502972A JP2006502972A (ja) 2002-05-07 2003-05-07 デスモプレシンの口腔内分散性医薬製剤
AU2003233118A AU2003233118B8 (en) 2002-05-07 2003-05-07 Desmopressin in an orodispersible dosage form
KR1020047017821A KR100632455B1 (ko) 2002-05-07 2003-05-07 약제학적 제제
DK03727870.2T DK1501534T5 (da) 2002-05-07 2003-05-07 Desmopressin i orodispergerbar dosisform
ES03727870.2T ES2266820T4 (es) 2002-05-07 2003-05-07 Desmopresina en una forma de dosificación orodispersable
DE2003607082 DE60307082T4 (de) 2002-05-07 2003-05-07 In der mundhöhle dispergierbare phamarzeutische zusammensetzung mit desmopressin
MXPA04010926A MXPA04010926A (es) 2002-05-07 2003-05-07 Formulaciones farmaceuticas.
CA002484724A CA2484724C (fr) 2002-05-07 2003-05-07 Formulations pharmaceutiques
IL164519A IL164519A (en) 2002-05-07 2004-10-12 Form of pharmacy administration of desmopressin that is broken down in the mouth, process for its preparation and uses
HR20041152A HRP20041152B1 (en) 2002-05-07 2004-12-03 Pharmaceutical formulations
NO20045345A NO335167B1 (no) 2002-05-07 2004-12-06 Farmasøytisk doseringsform
HK05106142A HK1074393A1 (en) 2002-05-07 2005-07-20 Desmopressin in an orodispersible dosage form
US12/487,116 US7947654B2 (en) 2002-05-07 2009-06-18 Pharmaceutical formulations
US13/110,619 US8802624B2 (en) 2002-05-07 2011-05-18 Methods of treatment using orodispersible desmopressin pharmaceutical formulations
US14/326,939 US9220747B2 (en) 2002-05-07 2014-07-09 Methods using desmopressin acetate in orodispersible form
US14/947,261 US9504647B2 (en) 2002-05-07 2015-11-20 Pharmaceutical formulations of desmopressin
US15/333,503 US9919025B2 (en) 2002-05-07 2016-10-25 Pharmaceutical formulations of desmopressin
US15/881,123 US10307459B2 (en) 2002-05-07 2018-01-26 Pharmaceutical formulations of desmopressin

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GBGB0210397.6A GB0210397D0 (en) 2002-05-07 2002-05-07 Pharmaceutical formulations
GB0210397.6 2002-05-07
IBPCT/IB02/04036 2002-09-20
PCT/IB2002/004036 WO2003094885A1 (fr) 2002-05-07 2002-09-20 Formulation pharmaceutique sublinguale a base de desmopressine

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US10/513,437 A-371-Of-International US7560429B2 (en) 2002-05-07 2003-05-07 Orodispersible dosage forms of desmopressin acetate
US12/487,116 Continuation US7947654B2 (en) 2002-05-07 2009-06-18 Pharmaceutical formulations

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BR (1) BR0309819A (fr)
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DE (2) DE60307082D1 (fr)
HR (1) HRP20041152B1 (fr)
NO (1) NO335167B1 (fr)
NZ (1) NZ535861A (fr)
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AU2003233118B8 (en) 2009-07-30
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