CN1270712C - Felodipine controlled-release preparation - Google Patents
Felodipine controlled-release preparation Download PDFInfo
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- CN1270712C CN1270712C CN 200410012103 CN200410012103A CN1270712C CN 1270712 C CN1270712 C CN 1270712C CN 200410012103 CN200410012103 CN 200410012103 CN 200410012103 A CN200410012103 A CN 200410012103A CN 1270712 C CN1270712 C CN 1270712C
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- felodipine
- agent
- drug
- polyethylene glycol
- controlled release
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Abstract
The present invention discloses a felodipine controlled-release preparation which comprises a core body and a thin film, wherein the core body contains effective therapeutic quantity of felodipine, and physiologically acceptable osmotic pressure regulating agent, penetration enhancing agent and adhesive agent; the thin film is made from semitransparent thin-film material and porogenic agent. The felodipine controlled-release preparation prepared by the present invention only needs drug administration once every day, obviously reduces the times of administration of felodipine, and enhances the compliance of patients. Compared with the current conventional tablets, the present invention has steady blood drug concentration in vivo has the sustained release of drug, and the drug effect can reach 24 hours, so that the steady and effective blood drug concentration of the patients in vivo can be guaranteed during administration, and the safety and the effectiveness of the drug is fundamentally enhanced.
Description
Technical field
The present invention relates to medicinal preparation, specifically a kind of felodipine controlled release formulation.
Background technology
(felodipine is a kind of bihydropyridine type calcium antagonist fel) to felodipine, has the blood vessel selectivity of height, has significantly to bring high blood pressure down and the effect of periphery power-assisted always.Healthy volunteer po Fel 10mg, qd, 4h reach peak concentration of drug (C
Max) 6.2nmoIL
-1～7.3nmoIL
-1Bioavailability is 15%～25%; Plasma protein binding rate 99%; Pharmacokinetics belongs to three-compartment model in the body, and beginning is a rapid distribution phase, t
1/2Be 6min; Distribution volume is 0.6Lkg
-1T during redistribution
1/2Be 1.5h; Last distribution volume is 10Lkg eventually
-1, the distribution of this three phase is difficult to separately, and whole distribution absorbs and reaches more than the 12h.Its treatment plasma concentration scope is 5nmoIL
-1～20nmoIL
-1
There is first pass metabolism in felodipine, and corresponding metabolite is a pyridine derivatives, and further metabolism is formed up to rare 10 kinds of metabolites, all the metabolite parmacodynamics-less activity.The drainage half-life is 11h～17h, and 80% medicine is discharged through liver from blood.Food does not influence pharmacokinetic property.Age can influence the pharmacokinetics of taking behind the Fel, and with advancing age, blood clearance descends gradually (by average 73Lh
-1Drop to 40Lh
-1).After the liver cirrhosis person takes this product, C
Max, bioavailability increases, and distribution volume, plasma clearance and protein binding rate all reduce.
Scientific research finds that simple hypertension no doubt causes damage to internal organs, but fluctuation of blood pressure is especially serious to the damage harm that internal organs cause.At present, Chang Yong felodipine preparation is conventional tablet or slow releasing tablet clinically, and conventional tablet needed take in one day 2-3 time, though this preparation can reach the blood pressure lowering purpose, because blood drug level T/P ratio is higher, fluctuation of blood pressure is bigger.Confirm that through scientific research simple hypertension no doubt can cause damage to internal organs, but fluctuation of blood pressure causes damage harm even more serious to internal organs.For avoiding the shortcoming that felodipine conventional tablet medicining times is many, fluctuation of blood pressure is big, people have developed out felodipine sustained-release tablets.But though slow releasing tablet has reduced to take number of times, blood concentration fluctuation still fails to be controlled within the ideal scope.
Summary of the invention
Purpose of the present invention just provides a kind of can constant rate of speed release and the mild stable felodipine preparation of blood drug level.
The object of the present invention is achieved like this:
Felodipine is made controlled release preparation, and it has core body and thin film, and core body contains the felodipine of effective therapeutic dose and physiologically acceptable osmotic pressure regulator, penetrating agent, binding agent; Thin film is made by semipermeable membrane material and porogen; Wherein osmotic pressure regulator is sucrose or sodium chloride or mannitol, and penetrating agent is hydroxypropyl methylcellulose or Polyethylene Glycol, and binding agent is syrup or gelatinized corn starch, and semipermeable membrane material is a cellulose acetate, and porogen is a Polyethylene Glycol; The weight proportion of each raw material is:
2.5～50 parts of felodipines;
5～300 parts in sodium chloride;
5～300 parts of sucrose;
5～300 parts in mannitol;
1～200 part of hydroxypropyl methylcellulose;
0.1～25 part of magnesium stearate;
0.1～50 part of cellulose acetate;
0.1～50 part of Polyethylene Glycol.
Penetrating agent also can be selected sorbitol for use; Magnesium sulfate, potassium sulfate, sodium sulfate, potassium chloride.
Penetrating agent also can be selected polyvinylpyrrolidine cave, sodium carboxymethyl cellulose, hydroxypropyl cellulose, polyethylene glycols, carbamide, succinic acid, tartaric acid, Tween 80 for use.
Binding agent also can be selected the mixed solution of polyvinylpyrrolidone, Carboxymethyl cellulose sodium, hydroxypropyl methylcellulose, methylcellulose, water, water or alcohol for use;
Trnaslucent materials is also optional to be used in undissolved polymer in the gastrointestinal tract, as cellulose acetate, ethyl cellulose, Polyethylene Glycol, polrvinyl chloride, Merlon, hexenoic acid, vinylacetate and ethylene one acrylic polymers etc.
Porogen also can be selected dimethyl phthalate, diethyl phthalate, phthalic acid fourth methyl ester, triethyl citrate, triglyceride, cetomacrogol 1000, Polyethylene Glycol-1500, Macrogol 4000, polyethylene glycol 6000 for use, cetomacrogol 1000 0, poly-ethanol 12000, glyceride, succinate, benzoate, phosphate ester, ethanedioic acid ester, tartrate etc.
Felodipine controlled release formulation of the present invention can be made tablet, capsule, pill, granule.
Effective therapeutic dose of felodipine controlled release formulation of the present invention is adult 2.5--10mg/ every day every day, once-a-day.
Felodipine controlled release formulation preferred dosage form of the present invention is the agent of single chamber pump matrix.
The preparation method of single chamber pump matrix agent is that felodipine is fully pulverized, and sieve (100～200 order) pulverized 100 mesh sieves with other adjuvant, by the prescription weighing, granulate with common wet granulation technology, and 50～70 ℃ of dryings, behind the granulate, compressed cores.
With the above-mentioned label coating solution coating that makes, increase weight to constant weight, make a call to the hole of a suitable size with laser in tablet one side, promptly.
The felodipine controlled release formulation of the present invention's preparation, oral back gastrointestinal moisture enters label by semipermeable membrane, make medicine be dissolved into saturated solution, solution is hyperosmotic solution in the film and penetration enhancer makes, the inside and outside osmotic pressure official post moisture that exists of film enters in the film, thereby drug solution is pumped from aperture, drug release rate is not subjected to the influence of gastrointestinal tract pH value and the influence of individual variation, drug release meets the zero level dispose procedure, blood drug level is steady, eliminated peak valley phenomenon, thus the body organ injury that can effectively avoid the property fluctuation of blood pressure of medicine source to be caused.
The felodipine controlled release formulation of the present invention's preparation only need be taken medicine once on the 1st, had obviously reduced the administration number of times of felodipine, had improved patient's compliance.Compare with present conventional tablet, blood drug level is steady in the body, and medicine continues to discharge, and drug effect can reach 24 hours, thereby has guaranteed that blood drug level steadily and has effectively fundamentally improved the safety and the effectiveness of medicine in patient's medication period mesosome.
Beneficial effect of the present invention is confirmed in the tabulation of the release conditions of felodipine controlled release formulation the absorption test and among the embodiment in the rabbit body of felodipine controlled release tablet and slow releasing tablet.
Fig. 1: the rabbit time front of blood concentration figure of felodipine controlled release tablet and slow releasing tablet.
Among the figure: ng/ml for blood drug level h be time hour-◆-represent slow releasing tablet
-■-represent controlled release tablet
Felodipine controlled release formulation in the experiment is embodiment 1 a made tablet, and slow releasing tablet is for being equal to the tablet of dosage according to conventional method preparation with embodiment 1.
As can be seen from the figure the present invention compares with slow releasing tablet, can more effectively control the blood concentration fluctuation of felodipine.
The specific embodiment
Embodiment 1:
1000 of labels
Felodipine 5g
Sodium chloride 80g
Starch 15g
Polyethylene Glycol 10g
Magnesium stearate 0.5g
5% gelatinized corn starch is an amount of
Coating solution (100ml)
Cellulose acetate 20g
Polyethylene Glycol 0.5g
Distilled water is an amount of
The preparation method of this tablet is as follows:
I, felodipine is crushed to 200 orders, sieves, add the starch mix homogeneously;
II, with sodium chloride, Polyethylene Glycol, magnesium stearate pulverize separately to 100 order, sieve the mixture mix homogeneously that makes with I;
III, in the mixture that II makes, add 5% gelatinized corn starch and make soft material in right amount;
IV, 50～60 ℃ of dryings, granulate, tabletting; Make every and contain the 5mg felodipine.
V, with the tablet coating that IV makes, the aperture of one 10～900 μ m is made a call in qualified back in a side of tablet with laser.
The release conditions of felodipine sees Table 1:
The accumulation stripping quantity of felodipine in containing the phosphate buffer of 0.5% sodium lauryl sulphate pH6.8 (method is Chinese Pharmacopoeia first method, the drug release determination method, rotating speed is that per minute 100 changes).
Table 1:
| Time (hour) | 0 | 2 | 4 | 6 | 8 | 10 | 16 | 20 | 24 |
| The | 0 | 13 | 28 | 41 | 56 | 71 | 95 | 99 | 100 |
Embodiment 2
1000 of labels
Felodipine 10g
Sucrose 80g
Mannitol 15g
Polyethylene Glycol 10g
Magnesium stearate 0.5g
30% syrup is an amount of
Coating solution is with embodiment 1
The preparation method of this tablet is as follows:
I, felodipine is crushed to 200 orders, sieves;
II, with sucrose, mannitol, Polyethylene Glycol, magnesium stearate pulverize separately to 100 order, sieve the felodipine mix homogeneously that makes with I;
III, in the mixture that II makes, add 30% syrup and make soft material in right amount;
IV, 50～60 ℃ of dryings, granulate, tabletting are made every tablet of tablet that contains the 10mg felodipine.
V, with the tablet coating that IV makes, the aperture of one 10～900 μ m is made a call in qualified back in a side of tablet with laser.
The release conditions of embodiment 2 felodipines sees Table 2:
The accumulation stripping quantity of felodipine in containing the phosphate buffer of 0.5% sodium lauryl sulphate pH6.8.
Method is Chinese Pharmacopoeia first method, the drug release determination method, and rotating speed is that per minute 100 changes.
Table 2:
| Time (hour) | 0 | 2 | 4 | 6 | 8 | 10 | 16 | 20 | 24 |
| The stripping | 0 | 12 | 27 | 40 | 55 | 72 | 96 | 100 | 100 |
Embodiment 3
1000 of labels
Felodipine 5g
Sodium chloride 80g
Polyethylene Glycol 10g
Hydroxypropyl methylcellulose 10g
Starch 15g
Magnesium stearate 0.5g
5% gelatinized corn starch is an amount of
Coating solution is with embodiment 1
The preparation method of this tablet is as follows:
I, felodipine is crushed to 200 orders, sieves, add the starch mix homogeneously;
II, sodium chloride powder is broken to 100 orders, sieves, mixture that makes with I and Polyethylene Glycol, hydroxypropyl methylcellulose, magnesium stearate mix homogeneously;
III, in the mixture that II makes, add 5% gelatinized corn starch and make soft material in right amount;
IV, 50～60 ℃ of dryings, granulate, tabletting are made every and are contained the 5mg felodipine.
V, with the tablet coating that IV makes, the aperture of one 10～900 μ m is made a call in qualified back in a side of tablet with laser.
The release conditions of embodiment 3 felodipines sees Table 3:
The accumulation stripping quantity of felodipine in containing the phosphate buffer of 0.5% sodium lauryl sulphate pH6.8.
Method is Chinese Pharmacopoeia first method, the release rate assay method, and rotating speed is that per minute 100 changes.
Table 3
| Time (hour) | 0 | 2 | 4 | 6 | 8 | 10 | 16 | 20 | 24 |
| The stripping | 0 | 11 | 29 | 40 | 57 | 73 | 97 | 99 | 100 |
Embodiment 4
1000 of capsule-cores
Felodipine 5g
Sodium chloride 80g
Polyethylene Glycol 10g
Hydroxypropyl methylcellulose 10g
Starch 15g
Magnesium stearate 0.5g
5% gelatinized corn starch is an amount of
Coating solution is with embodiment 1
This capsular preparation method is as follows:
I. felodipine is crushed to 200 orders, sieves, add the starch mix homogeneously.
II. sodium chloride powder is broken to 100 orders, sieves, mixture that makes with I and Polyethylene Glycol, hydroxypropyl methylcellulose, magnesium stearate mix homogeneously.
III. in the mixture that II makes, add 5% gelatinized corn starch and make soft material in right amount.
IV.50～60 ℃ drying, granulate, encapsulated, make every in grain contain 5mg felodipine capsule.
V. IV is made capsular coating, the aperture of one 10～900 μ m is made a call in qualified back on capsule shells with laser.
The release conditions of embodiment 4 felodipines sees Table 4:
The accumulation stripping quantity of felodipine in containing the phosphate buffer of 0.5% sodium lauryl sulphate pH6.8.
Method is Chinese Pharmacopoeia first method, and rotating speed is that per minute 100 changes.
Table 4:
| Time (hour) | 0 | 2 | 4 | 6 | 8 | 10 | 16 | 20 | 24 |
| The stripping | 0 | 11 | 29 | 40 | 57 | 73 | 97 | 99 | 100 |
Claims (2)
1, a kind of felodipine controlled release formulation includes core body and thin film, it is characterized in that core body contains the felodipine of effective therapeutic dose and physiologically acceptable osmotic pressure regulator, penetrating agent, binding agent; Thin film is made by semipermeable membrane material and porogen; Wherein osmotic pressure regulator is sucrose or sodium chloride or mannitol, and penetrating agent is hydroxypropyl methylcellulose or Polyethylene Glycol, and binding agent is syrup or gelatinized corn starch, and semipermeable membrane material is a cellulose acetate, and porogen is a Polyethylene Glycol; The weight proportion of each raw material is:
2.5～50 parts of felodipines;
5～300 parts in sodium chloride;
5～300 parts of sucrose;
5～300 parts in mannitol;
1～200 part of hydroxypropyl methylcellulose;
0.1～25 part of magnesium stearate;
0.1～50 part of cellulose acetate;
0.1～50 part of Polyethylene Glycol.
2, felodipine controlled release formulation according to claim 1 is characterized in that said controlled release agent is the agent of single chamber pump matrix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410012103 CN1270712C (en) | 2004-01-08 | 2004-01-08 | Felodipine controlled-release preparation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410012103 CN1270712C (en) | 2004-01-08 | 2004-01-08 | Felodipine controlled-release preparation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1640400A CN1640400A (en) | 2005-07-20 |
| CN1270712C true CN1270712C (en) | 2006-08-23 |
Family
ID=34867776
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410012103 Expired - Fee Related CN1270712C (en) | 2004-01-08 | 2004-01-08 | Felodipine controlled-release preparation |
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|---|---|
| CN (1) | CN1270712C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101292962B (en) * | 2007-04-26 | 2012-05-23 | 杭州民生药业有限公司 | Felodipine controlled release formulation and preparation method thereof |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100350909C (en) * | 2006-02-27 | 2007-11-28 | 合肥立方制药有限公司 | Method for preparing insoluble drug single-tablet-core single-chamber osmotic pump sustained-release preparations and its product |
| CN100457103C (en) * | 2006-06-28 | 2009-02-04 | 广州贝氏药业有限公司 | Double layer osmotic pump controlled release felodipine medicine composition |
| CN101103964B (en) * | 2006-07-14 | 2010-09-29 | 海南盛科生命科学研究院 | Sustained-release preparation containing felodipine and preparation method thereof |
| CN102302469B (en) * | 2011-07-13 | 2016-01-06 | 合肥华方医药科技有限公司 | The preparation method of double layer osmotic pump controlled release felodipine sheet |
| CN102525984A (en) * | 2011-12-29 | 2012-07-04 | 蚌埠丰原涂山制药有限公司 | Cinildipine controlled release preparation and preparation method thereof |
| CN102784128B (en) * | 2012-07-31 | 2015-01-07 | 北京协和药厂 | Felodipine sustained release preparation and preparation method of felodipine sustained release preparation |
-
2004
- 2004-01-08 CN CN 200410012103 patent/CN1270712C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101292962B (en) * | 2007-04-26 | 2012-05-23 | 杭州民生药业有限公司 | Felodipine controlled release formulation and preparation method thereof |
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|---|---|
| CN1640400A (en) | 2005-07-20 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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Owner name: HEFEI LIFANG PHARMACEUTICAL CO., LTD. Owner name: HEBEI MEDICAL UNIVERSITY Free format text: FORMER OWNER: CAO DEYING Effective date: 20100326 |
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Free format text: CORRECT: ADDRESS; FROM: 050017 COLLEGE OF PHARMACY, HEBEI MEDICAL UNIVERSITY, NO.361, ZHONGSHAN EAST ROAD, SHIJIAZHUANG CITY, HEBEI PROVINCE TO: 050017 NO.361, ZHONGSHAN EAST ROAD, SHIJIAZHUANG CITY, HEBEI PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20100326 Address after: 050017 Zhongshan East Road, Hebei, China, No. 361, No. Patentee after: Hebei Medical University Patentee after: Lifang Pharmaceutical Mfg. Co, Ltd, Hefei Address before: 050017 School of pharmacy, Hebei Medical University, 361 East Zhongshan Road, Shijiazhuang, Hebei Patentee before: Cao Deying |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060823 Termination date: 20130108 |
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| CF01 | Termination of patent right due to non-payment of annual fee |