A kind of eplerenone dispersible tablet
One, technical field
The present invention relates to a kind of pharmaceutical dosage form, specifically a kind of eplerenone dispersible tablet, belongs to medical art.
Two, background technology
Eplerenone (Eplerenone, I) be the selectivity aldosterone antagonists of new generation developed by Pfizer/Pharmacia Corp, be used for the treatment of the hyperpietic of 1 phase and 2 phases, effective percentage is similar to enalapril to the amplitude of diastolic pressure with reduction systolic pressure.To the primary hypertension patient of angiotensin converting enzyme inhibitor and the not good low renin level of angiotensin-ii-receptor depressant effect, eplerenone also has good antihypertensive effect.There is good antihypertensive effect to isolated systolic hypertension, have good hypotensive effect to the hypertension that diet induced obese is correlated with.
Within 2002, first in U.S.'s listing, commodity are called eplerenone conventional tablet:
for the treatment of hypertension, heart failure and myocardial infarction.Have definite curative effect to treatment hypertension, heart failure and myocardial infarction, untoward reaction is less, better tolerance.Its outstanding advantages be to the multiple depressor of coupling fail control severe hypertension, add and blood pressure can be made obviously to reduce with these product, especially systolic pressure decline more remarkable.To severe heart failure and patients with myocardial infarction, these product and angiotensin converting enzyme inhibitor (ACEI) and the coupling of beta 2 receptor blocker can be improved the quality of living and reduce mortality rate.
Eplerenone molecule is not containing ionization structure, and it is almost insoluble in water, therefore for eplerenone oral tablet, its disintegrate rate of dispersion in vivo and bioavailability closely related, and conventional tablet causes stripping slow due to disintegrate slowly, medicine is little at gastrointestinal diffusional area, absorbs insufficient, affect bioavailability, clinical medicine dose increases will be inevitable.Commercially available of Japan
the pharmacokinetic parameter display of Tablets (25mg, 50mg, 100mg) (pharmaceuticals イ Application タ PVC ュ ー Off ォ ー system, 2011 March the 6th edition), it is in yellow race crowd, these product oral 100mg/ time, T
maxh () is 2.3 ± 0.8, C
max(ng/ml) be 1330 ± 236, T
1/2h () is 3.54 ± 0.906, AUC
0-∞(ngh/ml) be 9490 ± 3320, dosage increase and decrease is to T
max, T
1/2affect not obvious, dosage increases and C
max, AUC
0-∞increase disproportionate relation.Show to improve blood drug level by dosage increase, cost dearly, in addition, stripping slowly causes the high and taking dose of local concentration to increase, and easily causes the untoward reaction such as diarrhoea, stomachache.
For improving the bioavailability of eplerenone tablet; patent CN99814110 discloses micronized eplerenone (eplerenone) compositions; by eplerenone micronize is improved eplerenone dissolution velocity in vivo; improve the bioavailability in body; but its disintegration time was more than 6 minutes; at interpolation 1% sodium lauryl sulphate as in the dissolution medium of cosolvent; the stripping result of 15 minutes can only reach about 90%; and this processing step is complicated; raw material needs micronization processes, and production cost is higher.Therefore, be badly in need of finding and a kind ofly can improve bioavailability in eplerenone body and ensure the novel form of its drug safety.
Three, summary of the invention
Existing eplerenone ordinary tablet fully absorbs because disintegrate and stripping affect medicine slowly, and bioavailability is not high, and dosage is large, and cost is high, still has the untoward reaction such as diarrhoea, stomachache, is also unfavorable for that the patient of old man and dysphagia takes.The present invention aims to provide a kind of eplerenone dispersible tablet, to overcome above-mentioned defect.
Inventor, through long-term experimental study, finds eplerenone prepared composition discrete piece, can perfection solve the problem.Dispersible tablet means that meeting water rapidly disintegrate can form the tablet of even aqueous dispersion, is for solving that solid preparation disintegrate is slow, stripping is poor, bioavailability is not high or the problem such as liquid preparation poor stability, packaging, transport, storage inconvenience and a kind of novel form of developing.Be particularly useful for water-insoluble drug, greatly can improve their bioavailability.Except having ordinary tablet good stability, outside the advantage such as to be easy to carry, the advantage taken, bioavailability is higher can be disperseed in addition in water.
Eplerenone dispersible tablet of the present invention is take eplerenone as active constituents of medicine, with disintegrating agent, cosolvent and auxiliary additive for non-active ingredient.
Described disintegrating agent is one or more in cross-linking sodium carboxymethyl cellulose, low-substituted hydroxypropyl cellulose, polyvinylpolypyrrolidone, carboxymethyl starch sodium, one or both in preferred cross-linking sodium carboxymethyl cellulose and low-substituted hydroxypropyl cellulose, more preferably cross-linking sodium carboxymethyl cellulose and low-substituted hydroxypropyl cellulose, the two mass ratio is 1: 0.1-10, is preferably 1: 0.5-5.
Described cosolvent is one or more in dodecyl sodium sulfate, sodium lauryl sulphate, polysorbate80, polyethylene glycol 6000; Preferably sodium dodecyl sulfate.
Described auxiliary additive comprises filler and lubricant.
Described filler is one or more in lactose, starch, microcrystalline Cellulose, dextrin, mannitol; One or both in preferred lactose and microcrystalline Cellulose; More preferably lactose and microcrystalline Cellulose combination, the two mass ratio is 1: 0.1-10.
Described lubricant is one or more in magnesium stearate, Pulvis Talci, stearic acid, sodium stearyl fumarate; One or both in preferred magnesium stearate and Pulvis Talci; More preferably magnesium stearate and Pulvis Talci, the two ratio is any.
The disintegrating agent that the present invention uses, cosolvent and auxiliary additive are prepares the conventional medicinal dispersing tablets dosage form adjuvant of tablet formulation.
The every sheet weight of described eplerenone dispersible tablet is 100-500mg, and the content of eplerenone dispersible tablet every sheet active constituents of medicine eplerenone is 5-200mg; Be preferably 10-100mg; Most preferably be 10mg, 25mg, 50mg or 100mg.
In described eplerenone dispersible tablet, the mass percentage of disintegrating agent is 5%-40%, and the mass percentage of cosolvent is 1%-5%, and the mass percentage of filler is 50%-85%, and the mass percentage of lubricant is 0.5%-2.5%.
Be preferably:
In described eplerenone dispersible tablet, the mass percentage of disintegrating agent is 5%-10%, and the mass percentage of cosolvent is 1%-3%, and the mass percentage of filler is 70%-80%, and the mass percentage of lubricant is 0.5%-1.5%.
Eplerenone tablet formulation of the present invention, in water, rapid disintegrate forms uniform suspension, in the rapid disintegrate dispersion of gastrointestinal tract, drug distribution enlarged areas, absorption point increases, and absorbs faster, bioavailability is apparently higher than conventional tablet, avoid ordinary preparation high in gastrointestinal tract local drug concentration, the defects such as gastrointestinal mucosa stimulation, adverse reaction reduction simultaneously; Eplerenone tablet formulation of the present invention both can be swallowed as conventional tablet, and also can put into after water disperses rapidly and take, preparation stabilization, effectively can meet the different demands of patient.
Grope through a large amount of prescription screenings and technique, determine the final formulation and technology of eplerenone dispersible tablet, and confirm above-mentioned advantage of the present invention in zoopery and bioequivalence experiment.In research process, inventor finds that specific disintegrating agent is equipped with appropriate cosolvent and is more conducive to this product dispersion stripping uncannily, improves and absorbs, improve bioavailability.Therefore, the present invention includes the selection to disintegrating agent and cosolvent, the disintegrating agent finally selected is one or more in cross-linking sodium carboxymethyl cellulose, low-substituted hydroxypropyl cellulose, polyvinylpolypyrrolidone, carboxymethyl starch sodium; The cosolvent finally selected is one or more in dodecyl sodium sulfate, sodium lauryl sulphate, polysorbate80, polyethylene glycol 6000.In addition, on the preparation specification basis of listing ordinary tablet, in conjunction with clinical study results, design every sheet eplerenone content at 5-200mg, and (under the condition of temperature 40 DEG C ± 2 DEG C, relative humidity 75% ± 5%, accelerated test investigates 6 months to have carried out stability to 10mg, 25mg, 50mg and 100mg specification, and under the condition of temperature 30 DEG C ± 2 DEG C, relative humidity 65% ± 5%, carry out long term test investigate 36 months) investigate, the every Testing index of result all meets quality standard, confirms its steady quality, controlled.
Human pharmacokinetics is tested: 24 health volunteers are divided into 2 groups at random, the eplerenone dispersible tablet formulation (25mg specification, 4) in one group of oral embodiment prescription 1, other one group of oral eplerenone
ordinary tablet (25mg specification, 4), surveys eplerenone concentration in blood plasma respectively, calculates C
max, T
maxand the parameter such as AUC.Result is as follows:
Result shows: the bioavailability of oral eplerenone dispersible tablet is apparently higher than eplerenone conventional tablet, and dispersible tablet experimenter all finds no obvious adverse reaction.
At prescription screening simultaneously, investigate the preparation technology of eplerenone dispersible tablet, the method preparation that final employing is following:
1, active component eplerenone is crossed 100-200 mesh sieve;
2, mixed homogeneously by equal increments method with non-active ingredient except lubricant by the active component eplerenone after sieving, add purified water moistening soft material, 24 mesh sieves are granulated;
3, wet granular forced air drying at 50-70 DEG C, 20 mesh sieve granulate;
4, lubricant is added, mix homogeneously;
5, tabletting.
The production equipment of eplerenone tablet formulation of the present invention is solid preparation and commonly uses production equipment, and do not need special installation, production cost is lower.Stable preparation process, reproducible.
Four, accompanying drawing explanation
Fig. 1 is prescription 1 In Vitro Dissolution curve;
Fig. 2 is prescription 2 In Vitro Dissolution curve;
Fig. 3 is prescription 3 In Vitro Dissolution curve;
Fig. 4 is prescription 4 In Vitro Dissolution curve;
Fig. 5 is prescription 5 In Vitro Dissolution curve;
Fig. 6 is prescription 6 In Vitro Dissolution curve;
Fig. 7 be commercially available eplerenone sheet (
25mg specification) In Vitro Dissolution curve.
Five, detailed description of the invention
Embodiment 1:
1, prescription 1:(recipe quantity is 1000)
2, preparation technology:
1) active component eplerenone is crossed 200 mesh sieves;
2) take the eplerenone of recipe quantity, add the lactose of recipe quantity, microcrystalline Cellulose, cross-linking sodium carboxymethyl cellulose, low-substituted hydroxypropyl cellulose and sodium lauryl sulphate successively by equal increments method, mix homogeneously; Add purified water moistening soft material, 24 mesh sieves are granulated;
3) wet granular forced air drying at 50-70 DEG C, 20 mesh sieve granulate;
4) lubricant Pulvis Talci and the magnesium stearate of recipe quantity is added, mix homogeneously;
5) tabletting.
Dispersible tablet prepared by the present embodiment is limited to 48 seconds when disperseing, and dissolution is 99.85%.
Embodiment 2:
1, prescription 2:(recipe quantity is 1000)
2, preparation technology:
1) active component eplerenone is crossed 200 mesh sieves;
2) take the eplerenone of recipe quantity, add the lactose of recipe quantity, microcrystalline Cellulose, cross-linking sodium carboxymethyl cellulose, low-substituted hydroxypropyl cellulose and sodium lauryl sulphate successively by equal increments method, mix homogeneously; Add purified water moistening soft material, 24 mesh sieves are granulated;
3) wet granular forced air drying at 50-70 DEG C, 20 mesh sieve granulate;
4) lubricant Pulvis Talci and the magnesium stearate of recipe quantity is added, mix homogeneously;
5) tabletting.
The present embodiment prepare dispersible tablet dispersion time be limited to 1 point 19 seconds, dissolution is 98.34%.
Embodiment 3:
1, prescription 3:(recipe quantity is 1000)
2, preparation technology:
1) active component eplerenone is crossed 200 mesh sieves;
2) take the eplerenone of recipe quantity, add the lactose of recipe quantity, microcrystalline Cellulose, cross-linking sodium carboxymethyl cellulose, low-substituted hydroxypropyl cellulose and sodium lauryl sulphate successively by equal increments method, mix homogeneously; Add purified water moistening soft material, 24 mesh sieves are granulated;
3) wet granular forced air drying at 50-70 DEG C, 20 mesh sieve granulate;
4) lubricant Pulvis Talci and the magnesium stearate of recipe quantity is added, mix homogeneously;
5) tabletting.
The present embodiment prepare dispersible tablet dispersion time be limited to 1 point 54 seconds, dissolution is 98.88%.
Embodiment 4:
1, prescription 4:(recipe quantity is 1000)
2, preparation technology:
1) active component eplerenone is crossed 200 mesh sieves;
2) take the eplerenone of recipe quantity, add the lactose of recipe quantity, microcrystalline Cellulose, cross-linking sodium carboxymethyl cellulose, low-substituted hydroxypropyl cellulose and sodium lauryl sulphate successively by equal increments method, mix homogeneously; Add purified water moistening soft material, 24 mesh sieves are granulated;
3) wet granular forced air drying at 50-70 DEG C, 20 mesh sieve granulate;
4) lubricant Pulvis Talci and the magnesium stearate of recipe quantity is added, mix homogeneously;
5) tabletting.
The present embodiment prepare dispersible tablet dispersion time be limited to 2 points 33 seconds, dissolution is 99.25%.
Embodiment 5:
1, prescription 5:(recipe quantity is 1000)
2, preparation technology:
1) active component eplerenone is crossed 200 mesh sieves;
2) take the eplerenone of recipe quantity, add the lactose of recipe quantity, microcrystalline Cellulose, cross-linking sodium carboxymethyl cellulose, low-substituted hydroxypropyl cellulose and sodium lauryl sulphate successively by equal increments method, mix homogeneously; Add purified water moistening soft material, 24 mesh sieves are granulated;
3) wet granular forced air drying at 50-70 DEG C, 20 mesh sieve granulate;
4) lubricant Pulvis Talci and the magnesium stearate of recipe quantity is added, mix homogeneously;
5) tabletting.
Dispersible tablet prepared by the present embodiment is limited to 29 seconds when disperseing, and dissolution is 99.17%.
Embodiment 6:
1, prescription 6:(recipe quantity is 1000)
2, preparation technology:
1) active component eplerenone is crossed 200 mesh sieves;
2) take the eplerenone of recipe quantity, add the lactose of recipe quantity, microcrystalline Cellulose, cross-linking sodium carboxymethyl cellulose, low-substituted hydroxypropyl cellulose and sodium lauryl sulphate successively by equal increments method, mix homogeneously; Add purified water moistening soft material, 24 mesh sieves are granulated;
3) wet granular forced air drying at 50-70 DEG C, 20 mesh sieve granulate;
4) lubricant Pulvis Talci and the magnesium stearate of recipe quantity is added, mix homogeneously;
5) tabletting.
Dispersible tablet prepared by the present embodiment is limited to 36 seconds when disperseing, and dissolution is 98.79%.