CN104434836A - Lovastatin composition lyophilized tablet and preparation method thereof - Google Patents

Abstract

The invention provides a lovastatin composition lyophilized tablet and a preparation method thereof, and relates to the technical field of medicine and medicine production. The tablet is prepared from lovastatin, starch and sucrose, wherein the starch and sucrose are used as auxiliary materials, and common corn starch is subjected to heat process, so that adhesion and disintegration effects of the starch in a tablet can be improved, and the moldability of the tablet can be improved; and only starch and sucrose are needed in the lovastatin composition lyophilized tablet. According to the preparation method, a two-decreasing two-increasing lyophilizing process is adopted for the lovastatin composition lyophilized tablet, the moldability of the tablet can be better by means of twice cooling and twice heating, the solubility of the tablet can be improved, and the bioavailability of the tablet can be improved; the tablet is capable of overcoming the defect of conventional lovastatin tablets and reducing the types and usage of auxiliaries in the lovastatin tablets, is high in solubility and high in bioavailability, and can be used for guaranteeing the curative effect and safety of clinical administration.

Description

A kind of lovastatin composition freeze-drying sheet and preparation method thereof

Technical field

The present invention relates to medicine and medical production technical field, be specifically related to a kind of lovastatin composition freeze-drying sheet and preparation method thereof.

Background technology

Lovastatin has another name called lovastatin.Be mainly used in the combined hyperlipidemia familial for the treatment of primary hypercholesterolemia, heterozygote familial hypercholesterolemia and increasing based on cholesterol.Also type 2 diabetes mellitus is used for the treatment of abnormal with multiple lipoprotein metabolism, particularly serum LDL-cholesterol (LDL-C) and the too high patient of VLDL level.Certain protection and improvement result is had to renal function.

molecular weight: 404.55

In common lovastatin tablet containing supplementary product kind and quantity more, generally to use filler, lubricant, disintegrating agent, adhesive, correctives etc., according to Chinese Pharmacopoeia (2010 editions) second lovastatin quality standard, the dissolution of lovastatin tablet reached more than 70% for qualified 45 minutes time, and increasing research shows that impurity in the incompatibility of the toxic and side effects of adjuvant itself, adjuvant and principal agent, adjuvant etc. all can have an impact to the safety of medicine.

Therefore, provide one can overcome above-mentioned shortcoming, select suitable adjuvant and technique, reduce supplementary product kind and consumption in lovastatin, improve dissolution and the bioavailability of lovastatin tablet, ensure that the safety of clinical application all has positive effect.

Traditional lyophilizing tablet can improve dissolution and bioavailability, but still need use the adjuvant such as mannitol, gelatin.And mannitol has certain biological activity, gelatin resource-constrained and perishable.

Starch is the basic adjuvant of oral solid formulation, it is polymerized by glucose molecule, and be commonly used for adhesive, diluent and disintegrating agent in tablets, it is cheap and easy to get, to human-body safety, but being used alone starch has no report as adjuvant freeze-dry process production lovastatin lyophilizing sheet.

Summary of the invention

Technical problem to be solved by this invention is the defect overcoming prior art, and propose a kind of lovastatin composition freeze-drying sheet and preparation method thereof further, said preparation adjuvant is few, good stability, and bioavailability is high.

Technical problem to be solved by this invention realizes by the following technical solutions:

A kind of lovastatin composition freeze-drying sheet, adjuvant is done with starch and sucrose, produce with freeze-dry process, this tablet overcomes the shortcoming of above-mentioned common lovastatin tablet, decrease supplementary product kind and consumption in lovastatin tablet, this sheet dissolution is large, and bioavailability is high, ensure that curative effect and the safety of clinical application.

A kind of lovastatin composition freeze-drying sheet, is prepared from by following raw material:

A preparation method for lovastatin composition freeze-drying sheet, comprises step as follows:

A, take the starch of component amount, add a certain amount of purified water and stir, by pH adjusting agent, the pH value of solution is controlled between 5-7.5, be then heated to 72 DEG C, be incubated 20 minutes, make the corn starch solution of 5 ~ 15% (W/V);

B, measure purified water 45ml, boil, add 85g sucrose, stir, after dissolving, continue to be heated to 100 DEG C, filter with purified cotton, the appropriate hot distilled water of filter is cleaned, and washing liquid and filtrate merge, and let cool, add appropriate distilled water, make full dose become 100mL, stir evenly, obtain B solution;

The solution that C, the solution and the step B that steps A are obtained obtain mixes, and fully stirs 30 minutes, is down to room temperature and obtains Semen Maydis-sucrose solution;

D, take lovastatin 10 grams, add in 1L Semen Maydis-sucrose solution, stir 25 ~ 35 minutes;

Medicinal liquid is sub-packed in drug-containing dish after measuring lovastatin content by E, medicinal liquid, each drug-containing dish dress 1.0ml;

F, the drug-containing dish that medicinal liquid is housed is put into vacuum freezing drying oven, be cooled to subzero 45 DEG C, keep 2 hours, evacuation, then 0 DEG C is warming up to gradually, keep 2 hours, then be cooled to subzero 45 DEG C, keep 2 hours, be warming up to 0 DEG C gradually again, keep 2 ~ 4 hours, then be warming up to 28 ~ 32 DEG C of dryings 4 ~ 6 hours gradually, whole process vacuum remains on 10 handkerchiefs; Finally the drug-containing dish lid of powder charge is covered tightly, and load aluminium foil bag and carry out sealing and obtain lovastatin composition freeze-drying sheet.

Described starch selects corn starch, preferably the corn starch solution of 10% (W/V).

Beneficial effect of the present invention is:

The preparation method of a kind of lovastatin composition freeze-drying sheet of the present invention, heating process process is carried out to common corn starch, starch bonding in tablets, disintegration can be improved, improve the mouldability of tablet, in lovastatin composition freeze-drying sheet, dosage of sucrose is 8.5% (W/V), it is the hardness reinforcer of this tablet, and plays flavored action.Lovastatin composition freeze-drying sheet only needs starch and sucrose two kinds of adjuvants.The freeze-dry process of two liters falls in lovastatin composition freeze-drying sheet employing two, and twice cooling, twice intensification can make sheet mouldability better, which increase the dissolution of tablet, thus improve the bioavailability of tablet.

Accompanying drawing explanation

Fig. 1 is the dissolution correlation curve figure of lovastatin in experiment.

Detailed description of the invention

The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with specific embodiment, set forth the present invention further, but following embodiment being only the preferred embodiments of the present invention, and not all.Based on the embodiment in embodiment, those skilled in the art under the prerequisite not making creative work obtain other embodiment, all belong to the protection domain of this patent.

Embodiment 1

A, take the corn starch of 100g, the purified water adding 900ml stirs, and controls at 5-7.5, is then heated to 72 DEG C, keep 120 minutes, make the corn starch solution of 9% (W/V) by pH adjusting agent by the pH value of solution.

B, measure purified water 45ml, boil, add 85g sucrose, stir, after dissolving, continue to be heated to 100 DEG C, filter with purified cotton, the appropriate hot distilled water of filter is cleaned, and washing liquid and filtrate merge, and let cool, add appropriate distilled water, make full dose become 100mL, stir evenly, obtain B solution.

The solution that C, the solution and the step B that steps A are obtained obtain mixes, and fully stirs 30 minutes, after solution be down to room temperature obtain Semen Maydis-sucrose solution.

D, take lovastatin 10g, add in 1L Semen Maydis-sucrose solution, stir 30 minutes.

Medicinal liquid is sub-packed in drug-containing dish after measuring lovastatin content by E, medicinal liquid, each drug-containing dish dress 1.0ml.

F, the drug-containing dish that medicinal liquid is housed is put into vacuum freezing drying oven, be cooled to subzero 45 DEG C, keep 2 hours, evacuation, then 0 DEG C is warming up to gradually, keep 2 hours, then be cooled to subzero 45 DEG C, keep 2 hours, be warming up to 0 DEG C gradually again, keep 2 ~ 4 hours, then be warming up to 28 ~ 32 DEG C of dryings 4 ~ 6 hours gradually, whole process vacuum remains on 10 handkerchiefs.Finally the drug-containing dish lid of powder charge is covered tightly, and load aluminium foil bag and carry out sealing and obtain lovastatin composition freeze-drying sheet.

Embodiment 2

A, take the corn starch of 130g, the purified water adding 900ml stirs, and controls at 5-7.5, is then heated to 72 DEG C, keep 120 minutes, make the corn starch solution of 13% (W/V) by pH adjusting agent by the pH value of solution.

B, measure purified water 45ml, boil, add 85g sucrose, stir, after dissolving, continue to be heated to 100 DEG C, filter with purified cotton, the appropriate hot distilled water of filter is cleaned, and washing liquid and filtrate merge, and let cool, add appropriate distilled water, make full dose become 100mL, stir evenly, obtain B solution.

The solution that C, the solution and the step B that steps A are obtained obtain mixes, and fully stirs 30 minutes, after solution be down to room temperature obtain Semen Maydis-sucrose solution.

D, take lovastatin 10 grams (by 1000 calculations), add 1L Semen Maydis-sucrose solution, stir 30 minutes.

Medicinal liquid is sub-packed in drug-containing dish after measuring lovastatin content by E, medicinal liquid, each drug-containing dish dress 1.0ml.

F, the drug-containing dish that medicinal liquid is housed is put into vacuum freezing drying oven, be cooled to subzero 45 DEG C, keep 2 hours, evacuation, then 0 DEG C is warming up to gradually, keep 2 hours, then be cooled to subzero 45 DEG C, keep 2 hours, be warming up to 0 DEG C gradually again, keep 2 ~ 4 hours, then be warming up to 28 ~ 32 DEG C of dryings 4 ~ 6 hours gradually, whole process vacuum remains on 10 handkerchiefs.Finally the drug-containing dish lid of powder charge is covered tightly, and load aluminium foil bag and carry out sealing and obtain lovastatin composition freeze-drying sheet.

Experimental data

1, hardness, friability contrast test

Get lovastatin composition freeze-drying sheet prepared by above-described embodiment respectively and lovastatin ordinary tablet (commercially available) detects friability and hardness by " Chinese Pharmacopoeia " version in 2010 two annex X G inspection techniques, carried out comparative study, the results are shown in following table:

Sample	Hardness/N	Friability
			Execute example 1	64.8	<1％
Execute example 2	67.5	<1％
			Ordinary tablet (commercially available)	68.5	<1％

Experimental data shows, lovastatin composition freeze-drying sheet and ordinary tablet (commercially available) without significant difference, meet " Chinese Pharmacopoeia " version in 2010 to the requirement of tablet on friability and hardness.

2, dissolution contrast test

(No. 1 to No. 3 is embodiment 1 to get lovastatin tablet (commercially available) and each 6 of lovastatin composition freeze-drying sheet, No. 4 to No. 6 is embodiment 2), press Chinese Pharmacopoeia (2010 editions) second dissolution method annex X C second method respectively, with the phosphate solution 900mL of 2% sodium lauryl sulphate for dissolution medium, rotating speed is 100 turns per minute, operate in accordance with the law, respectively through 10min, 20min, 30min, 45min, during 75min, get solution to filter, get continuous worry liquid, according to Chinese Pharmacopoeia (2010 editions) second annex IV A ultraviolet visible spectrophotometry, absorbance is measured at the wavelength place of 237nm, another precision takes lovastatin reference substance, puts in 25mL measuring bottle, and add acetonitrile and dissolve and be diluted to scale, shake up, precision measures 2mL, puts in 100mL measuring bottle, adds stripping medium to scale, shakes up, be measured in the same method, calculate the stripping quantity of every sheet.Result is as follows:

One, lovastatin tablet (commercially available)

Two, lovastatin lyophilizing sheet (No. 1 to No. 3 is embodiment 1, and No. 4 to No. 6 is embodiment 2)

Respectively with catch cropping Dissolution profiles during average dissolution pair, as Fig. 1.

Four, result judges

Judge according to Chinese Pharmacopoeia (2010 editions) second lovastatin tablet quality standard, the dissolution of lovastatin tablet (commercially available) reached more than 70% for qualified 45 minutes time, actual measurement is 78.3%, and lovastatin lyophilizing sheet dissolution 20 minutes time reaches 77.2%.It can thus be appreciated that the time that lovastatin lyophilizing sheet dissolution reaches 80% is than the time decreasing about 25 minutes of lovastatin tablet (commercially available).So the lovastatin lyophilizing sheet blood drug level peaking time is shorter than lovastatin tablet (commercially available), and bioavailability is higher, better efficacy.

More than show and describe ultimate principle of the present invention, principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and description is only preference of the present invention; be not used for limiting the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.

Claims (2)

1. a lovastatin composition freeze-drying sheet, is characterized in that, is prepared from by following raw material:

2. a preparation method for lovastatin composition freeze-drying sheet according to claim 1, is characterized in that, comprise step as follows:

A, take the starch of component amount, add a certain amount of purified water and stir, by pH adjusting agent, the pH value of solution is controlled between 5-7.5, be then heated to 72 DEG C, be incubated 20 minutes, make the corn starch solution of 5 ~ 15% (W/V);

B, measure purified water 45ml, boil, add 85g sucrose, stir, after dissolving, continue to be heated to 100 DEG C, filter with purified cotton, the appropriate hot distilled water of filter is cleaned, and washing liquid and filtrate merge, and let cool, add appropriate distilled water, make full dose become 100mL, stir evenly, obtain B solution;

The solution that C, the solution and the step B that steps A are obtained obtain mixes, and fully stirs 30 minutes, is down to room temperature and obtains Semen Maydis-sucrose solution;

D, take lovastatin 10 grams, add in 1L Semen Maydis-sucrose solution, stir 25 ~ 35 minutes;

Medicinal liquid is sub-packed in drug-containing dish after measuring lovastatin content by E, medicinal liquid, each drug-containing dish dress 1.0ml;

F, the drug-containing dish that medicinal liquid is housed is put into vacuum freezing drying oven, be cooled to subzero 45 DEG C, keep 2 hours, evacuation, then 0 DEG C is warming up to gradually, keep 2 hours, then be cooled to subzero 45 DEG C, keep 2 hours, be warming up to 0 DEG C gradually again, keep 2 ~ 4 hours, then be warming up to 28 ~ 32 DEG C of dryings 4 ~ 6 hours gradually, whole process vacuum remains on 10 handkerchiefs; Finally the drug-containing dish lid of powder charge is covered tightly, and load aluminium foil bag and carry out sealing and obtain lovastatin composition freeze-drying sheet.