CN1994282A - Sustained-release preparation of mexiletine - Google Patents
Sustained-release preparation of mexiletine Download PDFInfo
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- CN1994282A CN1994282A CNA2006101530250A CN200610153025A CN1994282A CN 1994282 A CN1994282 A CN 1994282A CN A2006101530250 A CNA2006101530250 A CN A2006101530250A CN 200610153025 A CN200610153025 A CN 200610153025A CN 1994282 A CN1994282 A CN 1994282A
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Abstract
The invention relates to a slow-release agent of Meixilu and relative production, wherein it uses Meixilu as material, adds slow-release skeleton material and drug to obtain solid disperser; releases the drug to hold blood density. The invention can reduce feeding time, reduce blood peak-valley condition, improve safety and reduce drug consumption.
Description
[technical field] the present invention relates to slow releasing preparation of mexiletine and preparation method thereof.
[background technology]
The research and development of slow releasing preparation, the history surplus in the of existing so far 40 year, it is in environment provided, non-lentamente on request constant release, the preparation that medication every day number of times and corresponding ordinary preparation reduce once more at least or prolong to some extent blanking time of medication.This preparation can make human body keep this kind blood drug level to reach the long time, do not descend quickly the ordinary preparation and do not resemble, thereby " peak valley " phenomenon that can avoid the ordinary preparation frequent drug administration to be occurred, safety, effectiveness or the adaptability of medicine are increased, thereby reduced the medication number of times, greatly facilitate the patient, particularly the patient of long-term prescription.Peroral dosage form commonly used has matrix tablet, micropore bag pellicle controlled release tablet, laser osmotic pumps, composite particles chamber capsule, label chamber capsule, Entogastric lingering preparation, controlled release suspensoid, drop pill etc.; External preparation has eye therapy system, oral cavity sticking tablet, transdermal drug delivery system etc.; Injection has water suspension, Emulsion, liposome, microsphere etc.Tablet is with its taking convenience, and preparation technology is simple relatively, and quality is easy to advantage such as control becomes most widely used, the most sophisticated dosage form of technology of slow releasing preparation research and development.Capsule is also with its taking convenience, and preparation technology is simple relatively, and quality such as is easy to control at advantage becomes a wider dosage form of slow releasing preparation research and development application prospect.Film coating sustained-release and controlled release preparation packs the suitable clothing layer of one deck on the surface of label and piller, it is dissolved under certain condition or be partly dissolved and discharge medicine, can reach the sustained-release and controlled release effect.Its principle belongs to diffusion and discharges, and the energy is based on the osmotic pressure of film intracavity, or the stripping dispersal behavior coated slow release controlled release preparation of drug molecule in polymer is one of type of extensive use in the oral sustained release controlled release preparation.
Slow releasing preparation belongs to third generation preparation in the development process of pharmaceutics.In recent years, the research and development development of slow releasing preparation rapidly, the slow releasing preparation that with the Western medicine is material medicine has carried out a large amount of research at pharmacokinetics design principle, adjuvant and moulding process, biopharmaceutics characteristic aspects such as (comprising medicine inside and outside release rule and influence thereof), and existing many sophisticated kinds such as aminophylline slow releasing tablet, cefaclor slow releasing tablet, cefalexin slow releasing capsule etc. are widely used in clinically.Chinese medicine is more complicated in this regard, the Chinese medicine compound preparation active component is often indeterminate, thereby cause in its dissolubility, partition coefficient, the stability in Digestive system and the body and the logical suitable property of the combination rate of blood plasma, medicine pK value and biomembrane between relation etc. indeterminate, thereby increased the difficulty of preparation, but it is clinical that more existing at present sophisticated kinds are used for, as ZHENGQINGFENGTONGNING slow releasing tablet, aescine gel sustained-release preparation etc.
According to its preparation technology's difference, slow releasing preparation can be divided into tablet, capsule, sustained-release dropping pill etc.Used substrate comprises hydrophilic gel sustained-release matrix material, as hydroxypropyl cellulose, hydroxypropyl emthylcellulose, sodium carboxymethyl cellulose, carbomer etc.; Erodible sustained-release matrix material is as stearic acid, hexadecanol, octadecanol, Polyethylene Glycol etc.; Water-insoluble sustained-release matrix material is as ethyl cellulose, zein etc.Along with being on the increase of substrate kind, preparation technology's is ripe day by day perfect, and slow releasing agent is extensive day by day in the application of Chinese-western medicine preparation, therefore existing medicine is carried out modified form, produce more medicament slow release dosage form, will greatly enrich drug market, improve quality of medical care.
Mexiletine belongs to Ib class anti-arrhythmic, can suppress the myocardial cell sodium influx, reduces the action potential 0 very fast degree that is divided by, and shortens the effective refractory period of Pu Shi fiber.In the normal patient of conducting system of heart, mexiletine is little to the generation and the conduction of cardiac impulse, does not find in the clinical trial that mexiletine causes II degree or the atrioventricular block of III degree.Therefore mexiletine does not prolong sequences of ventricular depolarization and multipole time-histories, can be used for the ventricular arrhythmia that the QT interval prolongs.This medical instrument has arrhythmia, convulsion and local anesthesia effect.Inhibitory action to cardiac muscle is less.The general maintenance dose of mexiletine every day, about 400～800mg divided clothes 2～3 times.Adult's maximum dose is 1200mg every day, and gradation is oral.Mexiletine generally needs the interval to give a medicine in about 8 hours, and using to the patient makes troubles, and owing to the influence of factors such as the length of one's sleep, affects the medicine steady plasma-drug concentration, thereby influences drug effect simultaneously.The technology of the present invention is the mexiletine slow releasing preparation, can be administered once in 12-24 hour at interval, keeps best steady plasma-drug concentration, improves drug effect, the convenient use.
[summary of the invention]
The purpose of this invention is to provide slow releasing preparation of mexiletine and preparation method thereof.
The present invention studies by experiment mexiletine has been carried out modified form, changes slow releasing preparation into from existing tablet, capsule etc.Utilize medicament slow release framework material hydrophilic gel sustained-release matrix material, as hydroxypropyl cellulose, hydroxypropyl emthylcellulose, sodium carboxymethyl cellulose, carbomer etc.; Erodible sustained-release matrix material is as stearic acid, hexadecanol, octadecanol, Polyethylene Glycol etc.; Water-insoluble sustained-release matrix material, be aided with other common drug adjuvant as substrate such as ethyl cellulose, zein and selected medicine material and make solid preparation, make the non-lentamente as requested constant release of medicine, safety, effectiveness or the adaptability of medicine are increased, thereby reduced the medication number of times, greatly facilitate the patient, particularly the patient's of long-term prescription use.
Wherein, selected medicine has the chemical compound and its esters (as sodium salt, potassium salt, hydrochlorate, sulfate, hydrobromate, tartrate, the fumarate etc.) derivant of following feature:
Chinese: mexiletine and salt derivative thereof, particularly hydrochlorate
English name: Mexitine
Chemical name: 1-(2, the 6-dimethyl phenoxy)-2-propylamin hydrochloride
Molecular formula: C
11H
17NOHCl=215.727
Wherein said slow releasing tablet is formed its Chinese medicine by mexiletine and salt derivative thereof and substrate: sustained-release matrix material=1: 0.10-1: 10.0.Described substrate comprises the medicament slow release framework material: hydrophilic gel medicament slow release framework material, as hydroxypropyl cellulose, hydroxypropyl emthylcellulose, sodium carboxymethyl cellulose, carbomer etc.; Erodible medicament slow release framework material is as stearic acid, hexadecanol, octadecanol, Polyethylene Glycol etc.; Water-insoluble drug sustained-release matrix material comprises as ethyl cellulose, zein etc. and other additional materials:
1, diluent (filler): for example Icing Sugar, gelatin, glycerol, arabic gum, starch, dextrin, lactose, glucose, mannitol, calcium sulfate, calcium hydrogen phosphate, tricalcium phosphate, gelatinized corn starch, syrup, maltose, gelatine size, cellulose, Kaolin, sodium chloride, modified starch (Sta-RX1500), microcrystalline Cellulose etc., wherein Icing Sugar has sucrose, maltose, dextrinose, dextrinose oligosaccharide, panose, cottonseed sugar, stachyose, oligofructose, fructose, inulin, protein sugar, stevioside, xylitol, maltose alcohol, sorbitol;
2, binding agent: for example water, ethanol, starch, gelatin, sucrose, glucose, dextran, syrup, lactose, arabic gum, sodium alginate, gelatine size, polyvinylpyrrolidone, Polyethylene Glycol, methylcellulose, carboxymethyl cellulose, ethyl cellulose, hydroxypropyl cellulose, maltose, sucrose dextrin copolymer;
3, disintegrating agent: for example starch (corn and potato starch), cross-linking sodium carboxymethyl cellulose, polyvinylpolypyrrolidone, carboxymethyl starch sodium, pectin, carboxymethyl cellulose, microcrystalline Cellulose, tween 80, lauric acid sodium sulfate, stearic acid sodium sulfonate, kaolin.
4, lubricant: for example stearic acid, calcium stearate, magnesium stearate, zinc stearate, hydrogenated vegetable oil, polyoxyethylene monostearate, light mineral oil, liquid paraffin, boric acid, sodium chloride, sodium benzoate, sodium acetate, enuatrol, lauric acid sodium sulfate (magnesium), single Laurel sucrose acid ester, adipic acid, fumaric acid, three triacetins, Polyethylene Glycol
1500～20000
5, fluidizer: for example starch, purified talc, micropowder silica gel, pyrolytic silicon dioxide, hydrated sodium aluminosilicate.
By the preparation method of following slow releasing tablet provided by the present invention, can further understand the present invention, but following description not a limitation of the invention:
1, the preparation method of slow releasing tablet:
With the medicine is primary raw material, according to certain ratio, adds medicament slow release framework material and additional materials as substrate, is prepared from through specific technology, apparatus processing again.Specific as follows:
(1) prescription: medicine+substrate;
Medicine: be foregoing medicine and its esters (as sodium salt, potassium salt, hydrochlorate, sulfate, hydrobromate, tartrate, fumarate etc.) derivant.
Substrate: include the medicament slow release framework material: hydrophilic gel medicament slow release framework material, as hydroxypropyl cellulose, hydroxypropyl emthylcellulose, sodium carboxymethyl cellulose, carbomer etc.; Erodible medicament slow release framework material is as stearic acid, hexadecanol, octadecanol, Polyethylene Glycol etc.; Water-insoluble drug sustained-release matrix material is as one or more composition and additional materials of ethyl cellulose, zein etc., its Chinese medicine: sustained-release matrix material=1: 0.10-1: 10.0.
(2) preparation technology: concrete implementation step is as follows:
Method one: according to certain ratio with medicine, erodible sustained-release matrix material, as stearic acid, hexadecanol, octadecanol, Polyethylene Glycol etc. and hydrophilic gel sustained-release matrix material, as hydroxypropyl cellulose, hydroxypropyl emthylcellulose, sodium carboxymethyl cellulose, carbomer etc. and the additives mix homogeneously of milling, direct compression or dry granulation behind the adding lubricant, tabletting or elder generation add typical binders granulation, drying behind the adding lubricant, add the lubricant tabletting again.
Method two: according to certain ratio with medicine, erodible sustained-release matrix material, as stearic acid, hexadecanol, octadecanol, Polyethylene Glycol etc. and additives mill jointly mix after, again with hydrophilic gel sustained-release matrix material, as mixing such as hydroxypropyl cellulose, hydroxypropyl emthylcellulose, sodium carboxymethyl cellulose, carbomers, direct compression or dry granulation behind the adding lubricant, tabletting or elder generation add typical binders granulation, drying behind the adding lubricant, add the lubricant tabletting again.
Method three: according to certain ratio with medicine, additives and water-insoluble sustained-release matrix material, alcoholic solution mix homogeneously as ethyl cellulose, zein etc., add hydrophilic gel sustained-release matrix material, as mixing granulations such as hydroxypropyl cellulose, hydroxypropyl emthylcellulose, sodium carboxymethyl cellulose, carbomers, dry, add lubricant, tabletting gets finished product.
Method four: according to certain ratio with water-soluble components in medicine, the described additives and water-insoluble sustained-release matrix material, alcoholic solution mix homogeneously or dissolving as ethyl cellulose, zein etc., vacuum drying, pulverize, add hydrophilic gel sustained-release matrix material, as mixing such as hydroxypropyl cellulose, hydroxypropyl emthylcellulose, sodium carboxymethyl cellulose, carbomers, add the lubricant tabletting again behind adding lubricant direct compression or the dry granulation and get finished product.
Method five: with medicine, water-insoluble sustained-release matrix material, even with additives and mix lubricant as ethyl cellulose, zein etc., tabletting gets finished product according to certain ratio.
2, the preparation method of slow releasing capsule
With the medicine is primary raw material, according to certain ratio, adds medicament slow release framework material and additional materials as substrate, is prepared from through specific technology, apparatus processing again.Specific as follows:
(1) prescription: medicine+substrate;
Medicine: be foregoing medicine and its esters (as sodium salt, potassium salt, hydrochlorate, sulfate, hydrobromate, tartrate, fumarate etc.) derivant.
Substrate: include the medicament slow release framework material: hydrophilic gel medicament slow release framework material, as hydroxypropyl cellulose, hydroxypropyl emthylcellulose, sodium carboxymethyl cellulose, carbomer etc.; Erodible medicament slow release framework material is as stearic acid, hexadecanol, octadecanol, Polyethylene Glycol etc.; Water-insoluble drug sustained-release matrix material is as one or more composition and additional materials of ethyl cellulose, zein etc., its Chinese medicine: sustained-release matrix material=1: 0.10-1: 10.0.
(2) preparation technology: concrete implementation step is as follows:
Method one: according to certain ratio with medicine, erodible sustained-release matrix material, as stearic acid, hexadecanol, octadecanol, Polyethylene Glycol etc. and hydrophilic gel sustained-release matrix material, as hydroxypropyl cellulose, hydroxypropyl emthylcellulose, sodium carboxymethyl cellulose, carbomer etc. and the additives mix homogeneously of milling, dry method or wet method are made slow-release pill or granule, add or do not add additives, be packed in the hard capsule.
Method two: according to certain ratio with medicine and additives mill jointly mix after, make slow-release pill or granule with dry method or wet method, the erodible sustained-release matrix material of reuse, as stearic acid, hexadecanol, octadecanol, Polyethylene Glycol etc. and/or hydrophilic gel sustained-release matrix material, as solution such as hydroxypropyl cellulose, hydroxypropyl emthylcellulose, sodium carboxymethyl cellulose, carbomers is that coating material is to ball pericardium clothing, add or do not add additives, be packed in the hard capsule.
Method three: according to certain ratio with medicine, erodible sustained-release matrix material, as stearic acid, hexadecanol, octadecanol, Polyethylene Glycol etc. and hydrophilic gel sustained-release matrix material, as hydroxypropyl cellulose, hydroxypropyl emthylcellulose, sodium carboxymethyl cellulose, carbomer etc. and the additives mix homogeneously of milling, dry method or wet method are made slow-release pill or granule, the erodible sustained-release matrix material of reuse, as stearic acid, hexadecanol, octadecanol, Polyethylene Glycol etc. and/or hydrophilic gel sustained-release matrix material, as hydroxypropyl cellulose, hydroxypropyl emthylcellulose, sodium carboxymethyl cellulose, solution such as carbomer are that coating material is to ball pericardium clothing, add or do not add additives, be packed in the hard capsule
Method four: according to certain ratio with water-soluble components in medicine, the described additives and water-insoluble sustained-release matrix material, alcoholic solution mix homogeneously or dissolving as ethyl cellulose, zein etc., vacuum drying, pulverize, add hydrophilic gel sustained-release matrix material, as mixing such as hydroxypropyl cellulose, hydroxypropyl emthylcellulose, sodium carboxymethyl cellulose, carbomers, dry method or wet method are made slow-release pill or granule, add or do not add additives, be packed in the hard capsule.
Method five: according to certain ratio with medicine, water-soluble components in the described additives and water-insoluble sustained-release matrix material, as ethyl cellulose, the alcoholic solution mix homogeneously or the dissolving of zein etc., vacuum drying, pulverize, add hydrophilic gel sustained-release matrix material, as hydroxypropyl cellulose, hydroxypropyl emthylcellulose, sodium carboxymethyl cellulose, mixing such as carbomer, dry method or wet method are made slow-release pill or granule, the erodible sustained-release matrix material of reuse, as stearic acid, hexadecanol, octadecanol, Polyethylene Glycol etc. and/or hydrophilic gel sustained-release matrix material, as hydroxypropyl cellulose, hydroxypropyl emthylcellulose, sodium carboxymethyl cellulose, solution such as carbomer are that coating material is to ball pericardium clothing, add or do not add additives, be packed in the hard capsule.
For the prolong drug per os is taken in the time of staying of back at gastric, guarantee that medicine discharges fully before small intestinal is left in transhipment, to improve bioavailability of medicament, mexiletine can further be made gastric retention type slow releasing preparation, prolong drug time of staying under one's belt whereby, medicine is discharged before leaving small intestinal fully, transport gradually, reach the purpose that abundant absorption improves bioavailability by duodenum and small intestinal.
But gastric retention system is the drug-supplying system of a kind of prolong drug at gastric transit time, comprises stomach floating system, gastric expansion system, bioadhesion system etc., and the most commonly used with the floating in stomach preparation.The floating in stomach drug-supplying system is meant can keep autologous density less than gastric content density after oral, is the preparation of floating state in gastric juice.It is to adopt that the present invention is designed to mexiletine floating in stomach preparation: (1) adds suitable floating material, as hydroxypropyl emthylcellulose, sodium carboxymethyl cellulose, polyvinylpyrrolidone, take off ethylene chitin, polyvinyl alcohol, octadecanol, hexadecanol, glyceryl monostearate, spermol, stearyl alcohol, stearic acid, Cera Flava etc.; (2) add foaming agent, unite use, meet gastric acid and produce CO as carbonate, bicarbonate or carbonate, bicarbonate and citric acid, tartaric acid
2Gas, bag quilt and surface gel layer are to reach the effect that reduces preparation density.
The present invention adds hydrophilic gelatin polymer, as hydroxypropyl emthylcellulose, sodium carboxymethyl cellulose, polyvinylpyrrolidone, take off the ethylene chitin, the lipid that polyvinyl alcohol and density are little, aliphatic alcohols, fatty acid or wax class, as octadecanol, hexadecanol, glyceryl monostearate, spermol, stearyl alcohol, stearic acid, Cera Flavas etc. are as floating material, add foaming agent, as carbonate, bicarbonate or carbonate, bicarbonate and citric acid, tartaric acid is united use, make preparation in gastric juice, meet the carbon dioxide that acid produces trace, all the time under one's belt floating, mexiletine is made the intragastric floating sustained-release tablet agent, thereby avoid medicine to enter the small intestinal section, thereby improved the curative effect of medicine by metabolism.In order to make preparation more effective, the medicine in the intragastric floating sustained-release tablet agent of described mexiletine: floating and ratios other auxiliary material are 1: 0.1-1: 10.
The mexiletine slow releasing tablet that [beneficial effect] is involved in the present invention utilizes the sustained-release matrix material to comprise hydrophilic gel medicament slow release framework material, as hydroxypropyl cellulose, hydroxypropyl emthylcellulose, sodium carboxymethyl cellulose, carbomer etc.; Erodible medicament slow release framework material is as stearic acid, hexadecanol, octadecanol, Polyethylene Glycol etc.; Water-insoluble drug sustained-release matrix material, as ethyl cellulose, zein etc. and floating and expanded material, as hydroxypropyl emthylcellulose, sodium carboxymethyl cellulose, polyvinylpyrrolidone, take off the ethylene chitin, the lipid that polyvinyl alcohol and density are little, aliphatic alcohols, fatty acid or wax class, as octadecanol, hexadecanol, glyceryl monostearate, spermol, stearyl alcohol, stearic acid, Cera Flavas etc. are as floating material, add foaming agent, as carbonate, bicarbonate or carbonate, bicarbonate and citric acid, tartaric acid is united to use to wait and is made solid preparation as substrate and medicine material, make medicine medicine after administration can be on request slowly continue to discharge keeping effective blood concentration, thereby reach long-acting.
Compare with conventional formulation, medication preparation becomes to have its special advantages after the slow releasing tablet: (1) reduces administration number of times, improves patient's compliance of taking medicine; (2) reduce the blood concentration peak valley phenomenon, improve drug effect and drug safety: (3) reduce the accumulated dose of medication, so that minimum dose reaches greatest treatment efficacy; (4) after medicine is made slowly released and controlled-drug delivery system with suitable carrier, the absorption of medicine and the main character decision that distributes by carrier, therefore select the appropriate carriers material according to clinical requirement, not only can conduct drugs to the particular target organ, can also improve the physicochemical property and the pharmacologically active of medicine to a certain extent, have broad clinical application prospect.
[specific implementation method]
By following concrete embodiment, can further understand the present invention, but following example not a limitation of the invention.
The preparation of embodiment 1-mexiletine slow releasing tablet (1)
Method: get mexiletine 100 grams, hydroxypropyl cellulose 50 grams, hypromellose 15 grams, lactose 10 grams, microcrystalline Cellulose 10 grams, carbomer 1 gram, Macrogol 4000 30 grams respectively, mix homogeneously, dry granulation, adding magnesium stearate mixes, tabletting gets finished product, and containing medication amount is the 100mg/ sheet.Measure the dissolution of mexiletine slow releasing tablet (1) in 37 ℃ of 900ml water then.Through drug release determination, the results are shown in Table 1, meet the requirements.
The dissolution of table 1 mexiletine slow releasing tablet (1)
| Sample time (hour) | 0.5 | 1 | 2 | 4 | 6 | 8 | 1 0 | 12 | 24 |
| Dissolution (%) | 15.2 | 25.3 | 35.8 | 60.6 | 74.1 | 80.9 | 93.0 | 92.5 | 88.7 |
The preparation of embodiment 2-mexiletine slow releasing tablet (2)
Method: get mexiletine 100 gram, hydroxypropyl cellulose 10 grams, octadecanol 20 grams, hypromellose 15 grams, carbomer 1 gram, lactose 10 grams respectively, cross 80 mesh sieves respectively, grind mixing, 95% alcoholic solution that adds concentration and be 10% polyvinylpyrrolidone is as binding agent and stir and make soft material, cross 16 mesh sieves and granulate granule drying at room temperature 2 hours, 16 mesh sieve granulate, add magnesium stearate 4.5 grams, micropowder silica gel 2 grams again, mixing, tabletting gets finished product, and containing medication amount is the 100mg/ sheet.Measure the dissolution of mexiletine slow releasing tablet (2) in 37 ℃ of 900ml water then.Through drug release determination, the results are shown in Table 2, meet the requirements.
The dissolution of table 2 mexiletine slow releasing tablet (2)
| Sample time (hour) | 0.5 | 1 | 2 | 4 | 6 | 8 | 10 | 12 | 24 |
| Dissolution (%) | 15.1 | 17.2 | 40.6 | 59.3 | 83.7 | 84.8 | 96.3 | 91.5 | 85.9 |
The preparation of embodiment 3-mexiletine slow releasing tablet (3)
Method: get mexiletine 100g, hypromellose 35g, microcrystalline Cellulose 5g, carbomer 1g respectively, cross 80 mesh sieves respectively, mixing, 95% alcoholic solution that adds concentration and be 10% polyvinylpyrrolidone is as binding agent and stir and make soft material, crosses 16 mesh sieves and granulates, 60 ℃ of dryings of granule 1 hour, 16 mesh sieve granulate add magnesium stearate 2.5 grams, mixing again, tabletting gets finished product, and containing medication amount is the 100mg/ sheet.Measure the dissolution of mexiletine slow releasing tablet (3) in 37 ℃ of 900ml water then.Through drug release determination, the results are shown in Table 3, meet the requirements.
The dissolution of table 3 mexiletine slow releasing tablet (3)
| Sample time (hour) | 0.5 | 1 | 2 | 4 | 6 | 8 | 10 | 12 | 24 |
| Dissolution (%) | 12.5 | 22.6 | 32.5 | 50.6 | 70.2 | 85.2 | 89.7 | 93.2 | 89.3 |
The preparation of embodiment 4-mexiletine slow releasing tablet (4)
Method: get mexiletine 100 grams, octadecanol 20 grams respectively, lactose 10 restrains, crosses respectively 80 mesh sieves, grind mixing, add hydroxypropyl cellulose 10 grams, hypromellose 15 grams, carbomer 1 gram, grind mixing, 95% alcoholic solution that adds concentration and be 10% polyvinylpyrrolidone is as binding agent and stir and make soft material, crossing 16 mesh sieves granulates, 60 ℃ of dryings of granule 1 hour, 16 mesh sieve granulate add magnesium stearate 4.5 grams, micropowder silica gel 2 grams, mixing again, tabletting gets finished product, and containing medication amount is the 100mg/ sheet.Measure the dissolution of mexiletine slow releasing tablet (4) in 37 ℃ of 900ml water then.Through drug release determination, the results are shown in Table 4, meet the requirements.
The dissolution of table 4 mexiletine slow releasing tablet (4)
| Sample time (hour) | 0.5 | 1 | 2 | 4 | 6 | 8 | 10 | 12 | 24 |
| Dissolution (%) | 18.7 | 21.0 | 44.8 | 62.9 | 87.3 | 88.4 | 99.0 | 94.3 | 90.2 |
The preparation of embodiment 5-mexiletine slow releasing tablet (5)
Method: get mexiletine 100 grams, lactose 10 grams, ethyl cellulose 30 grams (alcoholic solution) respectively, mix homogeneously adds hydroxypropyl cellulose 10 grams, carbomer 1 gram, mix homogeneously, 95% alcoholic solution that adds concentration and be 10% polyvinylpyrrolidone is as binding agent and stir and make soft material, cross 16 mesh sieves and granulate granule drying at room temperature 2 hours, 16 mesh sieve granulate, add magnesium stearate 4.5 grams, micropowder silica gel 2 grams again, mixing, tabletting gets finished product, and containing medication amount is the 100mg/ sheet.Measure the dissolution of mexiletine slow releasing tablet (5) in 37 ℃ of 900ml water then.Through drug release determination, the results are shown in Table 5, meet the requirements.
The dissolution of table 5 mexiletine slow releasing tablet (5)
| Sample time (hour) | 0.5 | 1 | 2 | 4 | 6 | 8 | 10 | 12 | 24 |
| Dissolution (%) | 9.6 | 16.3 | 35.0 | 54.2 | 66.1 | 74.5 | 89.7 | 91.8 | 83.5 |
The preparation of embodiment 6-mexiletine slow releasing tablet (6)
Method: get mexiletine 100 grams, lactose 10 grams, ethyl cellulose 30 grams (alcoholic solution) respectively, mix homogeneously, dry, pulverize, add hydroxypropyl cellulose 10 grams, carbomer 1 gram, mix homogeneously, 95% alcoholic solution that adds concentration and be 10% polyvinylpyrrolidone is as binding agent and stir and make soft material, cross 16 mesh sieves and granulate granule room temperature ℃ drying 2 hours, 16 mesh sieve granulate, add magnesium stearate 4.5 grams, micropowder silica gel 2 grams again, mixing, tabletting gets finished product, and containing medication amount is the 100mg/ sheet.Measure the dissolution of mexiletine slow releasing tablet (6) in 37 ℃ of 900ml water then.Through drug release determination, the results are shown in Table 6, meet the requirements.
The dissolution of table 6 mexiletine slow releasing tablet (6)
| Sample time (hour) | 0.5 | 1 | 2 | 4 | 6 | 8 | 10 | 12 | 24 |
| Dissolution (%) | 17.2 | 22.3 | 43.0 | 59.2 | 71.3 | 79.5 | 94.6 | 98.0 | 87.4 |
The preparation of embodiment 7-mexiletine slow releasing tablet (7)
Method: get mexiletine 100 grams, lactose 10 grams, ethyl cellulose 10 grams (alcoholic solution) respectively, mix homogeneously, drying is pulverized, 95% alcoholic solution that adds concentration and be 10% polyvinylpyrrolidone is as binding agent and stir and make soft material, cross 16 mesh sieves and granulate granule drying at room temperature 2 hours, 16 mesh sieve granulate, add magnesium stearate 4.5 grams, micropowder silica gel 2 grams again, mixing, tabletting gets finished product, and containing medication amount is the 100mg/ sheet.Measure the dissolution of mexiletine slow releasing tablet (7) in 37 ℃ of 900ml water then.Through drug release determination, the results are shown in Table 7, meet the requirements.
The dissolution of table 7 mexiletine slow releasing tablet (7)
| Sample time (hour) | 0.5 | 1 | 2 | 4 | 6 | 8 | 10 | 12 | 24 |
| Dissolution (%) | 27.5 | 30.0 | 36.4 | 68.0 | 72.8 | 76.4 | 86.3 | 88.4 | 90.2 |
The preparation of embodiment 8-mexiletine slow releasing tablet (8)
Method: get mexiletine 100 gram, hydroxypropyl cellulose 10 grams, octadecanol 20 grams, hypromellose 15 grams, carbomer 1 gram, lactose 10 grams respectively, cross 80 mesh sieves respectively, grind mixing, 95% alcoholic solution that adds concentration and be 10% polyvinylpyrrolidone is as binding agent and stir and make soft material, cross 16 mesh sieves and granulate granule room temperature ℃ drying 2 hours, 16 mesh sieve granulate, add magnesium stearate 4.5 grams, micropowder silica gel 2 grams again, mixing, tabletting gets finished product, and containing medication amount is the 100mg/ sheet.Measure the dissolution of mexiletine slow releasing tablet (8) in 37 ℃ of 900ml water then.Through drug release determination, the results are shown in Table 8, meet the requirements.
The dissolution of table 8 mexiletine slow releasing tablet (8)
| Sample time (hour) | 0.5 | 1 | 2 | 4 | 6 | 8 | 10 | 12 | 24 |
| Dissolution (%) | 8.7 | 10.1 | 32.4 | 51.6 | 77.4 | 99.0 | 101.5 | 99.4 | 97.6 |
The preparation of embodiment 9-mexiletine slow releasing tablet (9)
Method: get mexiletine 100 gram, hydroxypropyl cellulose 10 grams, octadecanol 50 grams, hypromellose 25 grams, carbomer 1 gram, lactose 10 grams respectively, cross 80 mesh sieves respectively, grind mixing, 95% alcoholic solution that adds concentration and be 10% polyvinylpyrrolidone is as binding agent and stir and make soft material, cross 16 mesh sieves and granulate granule room temperature ℃ drying 2 hours, 16 mesh sieve granulate, add magnesium stearate 4.5 grams, micropowder silica gel 2 grams again, mixing, tabletting gets finished product, and containing medication amount is the 100mg/ sheet.Measure the dissolution of mexiletine slow releasing tablet (9) in 37 ℃ of 900ml water then.Through drug release determination, the results are shown in Table 9, meet the requirements.
The dissolution of table 9 mexiletine slow releasing tablet (9)
| Sample time (hour) | 0.5 | 1 | 2 | 4 | 6 | 8 | 10 | 12 | 24 |
| Dissolution (%) | 17.8 | 19.6 | 43.6 | 62.2 | 85.0 | 100.2 | 96.3 | 90.8 | 85.0 |
The preparation of embodiment 10-mexiletine slow releasing tablet (10)
Method: get mexiletine 100 gram, hydroxypropyl cellulose 10 grams, octadecanol 50 grams, hypromellose 25 grams, carbomer 1 gram, lactose 10 grams respectively, cross 80 mesh sieves respectively, grind mixing, 95% alcoholic solution that adds concentration and be 10% polyvinylpyrrolidone is as binding agent and stir and make soft material, cross 16 mesh sieves and granulate granule room temperature ℃ drying 2 hours, 16 mesh sieve granulate, add magnesium stearate 4.5 grams, micropowder silica gel 2 grams again, mixing, tabletting gets finished product, and containing medication amount is the 100mg/ sheet.Measure the dissolution of mexiletine slow releasing tablet (10) in 37 ℃ of 900ml water then.Through drug release determination, the results are shown in Table 10, meet the requirements.
The dissolution of table 10 mexiletine slow releasing tablet (10)
| Sample time (hour) | 0.5 | 1 | 2 | 4 | 6 | 8 | 10 | 12 | 24 |
| Dissolution (%) | 20.6 | 22.5 | 45.9 | 64.1 | 75.1 | 96.3 | 98.0 | 90.2 | 83.4 |
The preparation of embodiment 11-mexiletine slow releasing capsule
Method: get mexiletine 100 grams, hydroxypropyl methylcellulose 50 grams, lactose 10 grams, ethyl cellulose 15 grams, carbomer 2 grams, calcium hydrogen phosphate 50 grams respectively, cross 80 mesh sieves respectively, put the mixer mixing, add concentration and be 60% ethanol water as wetting agent and stir and make soft material, cross 16 mesh sieves and granulate, 60 ℃ of dryings of granule 1 hour, 16 mesh sieve granulate add magnesium stearate 0.5 gram and Pulvis Talci 0.5 gram, mixing again, encapsulated, containing medication amount is the 100mg/ grain.Measure the dissolution of mexiletine slow releasing capsule (11) in 37 ℃ of 900ml water then.Through drug release determination, the results are shown in Table 11, meet the requirements.
The dissolution of table 11 mexiletine slow releasing tablet (11)
| Sample time (hour) | 0.5 | 1 | 2 | 4 | 6 | 8 | 10 | 12 | 24 |
| Dissolution (%) | 24.3 | 41.2 | 49.6 | 58.9 | 69.3 | 81.2 | 90.6 | 92.0 | 89.1 |
The preparation of embodiment 12-mexiletine intragastric floating tablets
Method: get mexiletine 100 grams, hypromellose 40 grams, sodium carboxymethyl cellulose 5g, carbomer 15 grams, octadecanol 10 grams, sodium bicarbonate 10g respectively, cross 80 mesh sieves respectively, grind mixing, 95% alcoholic solution that adds concentration and be 10% polyvinylpyrrolidone is as binding agent and stir and make soft material, crosses 16 mesh sieves and granulates, granule drying at room temperature 2 hours, 16 mesh sieve granulate add magnesium stearate 3 grams, mixing again, tabletting gets finished product, and containing medication amount is the 100mg/ sheet.Measure dissolution and the flotation time of mexiletine intragastric floating tablets in 37 ℃ of 900ml simulated gastric fluids then.Through drug release determination, the results are shown in Table 12, meet the requirements.The flotation time of table 13 in 37 ℃ of simulated gastric fluids met the floating requirement of administration greater than 12 hours.
The dissolution of table 12 mexiletine intragastric floating tablets (12)
| Sample time (hour) | 0.5 | 1 | 2 | 4 | 6 | 8 | 10 | 12 | 24 |
| Dissolution (%) | 26.9 | 36.5 | 39.5 | 50.1 | 58.9 | 79.3 | 100.9 | 91.1 | 86.5 |
The floating experimental result of table 13 mexiletine intragastric floating tablets
| The test batch | 1 | 2 | 3 |
| Flotation time (hour) | ≥12 | ≥12 | ≥12 |
The preparation of embodiment 13-mexiletine stomach-floating sustained release capsule
Method: get mexiletine 100 grams, hydroxypropyl methylcellulose 50 grams, lactose 10 grams, ethyl cellulose 15 grams, carbomer 2 grams, sodium bicarbonate 10g respectively, cross 80 mesh sieves respectively, grind mixing, 95% alcoholic solution that adds concentration and be 10% polyvinylpyrrolidone is as binding agent and stir and make soft material, crosses 16 mesh sieves and granulates, granule room temperature ℃ drying 2 hours, 16 mesh sieve granulate add magnesium stearate 3 grams, mixing again, tabletting gets finished product, and containing medication amount is the 100mg/ sheet.Measure dissolution and the flotation time of mexiletine intragastric floating tablets in 37 ℃ of 900m1 simulated gastric fluids then.Through drug release determination, the results are shown in Table 14, meet the requirements.The flotation time of table 15 in 37 ℃ of simulated gastric fluids met the floating requirement of administration greater than 12 hours.
The dissolution of table 14 mexiletine intragastric floating tablets (14)
| Sample time (hour) | 0.5 | 1 | 2 | 4 | 6 | 8 | 10 | 12 | 24 |
| Dissolution (%) | 17.4 | 25.4 | 32.9 | 44.6 | 65.9 | 77.8 | 103.5 | 98.5 | 87.2 |
The floating experimental result of table 15 mexiletine intragastric floating tablets
| The test batch | 1 | 2 | 3 |
| Flotation time (hour) | ≥12 | ≥12 | ≥12 |
Claims (9)
1, the slow releasing preparation of mexiletine is characterized in that: it contains ingredient and the slow release framework material and the additives of mexiletine, its Chinese medicine: sustained-release matrix material=1: 0.10-1: 10.0 substantially.
2, slow releasing preparation according to claim 1 is characterized in that: described sustained-release matrix material is one or more a combination in any of hydrophilic gel sustained-release matrix material, erodible sustained-release matrix material, water-insoluble sustained-release matrix material.
3. slow releasing preparation according to claim 1 is characterized in that: described mexiletine is mexiletine and salt derivative thereof.
4, sustained-release matrix material according to claim 2 is characterized in that: described hydrophilic gel sustained-release matrix material is one or more a combination in any of hydroxypropyl cellulose, hydroxypropyl emthylcellulose, sodium carboxymethyl cellulose, carbomer; Described erodible sustained-release matrix material is one or more the combination in any in stearic acid, hexadecanol, octadecanol, the Polyethylene Glycol; Described water-insoluble sustained-release matrix material is that ethyl cellulose is or/and zein.
5, slow releasing preparation according to claim 1 is characterized in that: preparation type comprises slow releasing tablet, slow release capsule preparation.
6, slow releasing preparation according to claim 1 is characterized in that: described slow releasing tablet also comprises the intragastric floating sustained-release tablet agent of mexiletine, its Chinese medicine: floating and ratios other auxiliary material are 1: 0.1-1: 10.
7, slow releasing preparation according to claim 1 is characterized in that: additives include lubricant and filler, binding agent, disintegrating agent, lubricant, fluidizer and floating material and expanded material in the described slow releasing tablet.
8, intragastric floating sustained-release preparation according to claim 6 is characterized in that: the floating material of adding is hydroxypropyl emthylcellulose, sodium carboxymethyl cellulose, polyvinylpyrrolidone, take off ethylene chitin, polyvinyl alcohol, octadecanol, hexadecanol, glyceryl monostearate, spermol, stearyl alcohol, stearic acid, Cera Flava.
9, intragastric floating sustained-release preparation according to claim 5 is characterized in that: the expanded material of adding is carbonate, bicarbonate or carbonate, bicarbonate and citric acid, tartaricly unites use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101530250A CN1994282A (en) | 2005-09-26 | 2006-09-20 | Sustained-release preparation of mexiletine |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510104989.1 | 2005-09-26 | ||
| CN 200510104989 CN1957928A (en) | 2005-09-26 | 2005-09-26 | Controlled release preparation of clinical treating medication, and fabricating method |
| CNA2006101530250A CN1994282A (en) | 2005-09-26 | 2006-09-20 | Sustained-release preparation of mexiletine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1994282A true CN1994282A (en) | 2007-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006101530250A Pending CN1994282A (en) | 2005-09-26 | 2006-09-20 | Sustained-release preparation of mexiletine |
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| Country | Link |
|---|---|
| CN (1) | CN1994282A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101703490B (en) * | 2009-11-13 | 2013-08-07 | 杭州师范大学 | Polysaccharide/inorganic nanoparticles hybrid micron-nano medicine-carrying capsule |
| CN110412164A (en) * | 2019-08-02 | 2019-11-05 | 上海葆隆生物科技有限公司 | A kind of detection method of the related substance of mexiletine hydrochloride |
-
2006
- 2006-09-20 CN CNA2006101530250A patent/CN1994282A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101703490B (en) * | 2009-11-13 | 2013-08-07 | 杭州师范大学 | Polysaccharide/inorganic nanoparticles hybrid micron-nano medicine-carrying capsule |
| CN110412164A (en) * | 2019-08-02 | 2019-11-05 | 上海葆隆生物科技有限公司 | A kind of detection method of the related substance of mexiletine hydrochloride |
| CN110412164B (en) * | 2019-08-02 | 2022-02-01 | 上海葆隆生物科技有限公司 | Method for detecting related substances of mexiletine hydrochloride |
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