Aspirin slow-release tablet and its prepn. method
A technology of aspirin and sustained-release tablets, applied in the field of human medicine, can solve the problems of seldom application, large dose, gastrointestinal bleeding, etc., and achieve the effects of improving compliance, improving absorption rate, and prolonging action time.
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Embodiment 1
[0400] Aspirin sustained-release tablet, its composition includes: aspirin, starch, hypromellose, polyacrylic acid resin No. II, white dextrin, talcum powder, tartaric acid, Tween-80, 75% ethanol, the above The weight ratio of the ingredients is aspirin 50, starch 1, hypromellose 2.48, polyacrylic resin II No. 3.6, white dextrin 1, talcum powder 3, tartaric acid 0.21, Tween-80 is 0.15, 75 % ethanol 12.
[0401] Administration method and dosage, take 50-150mg (1-3 tablets) orally each time, once a day or follow the doctor's advice.
Embodiment 2
[0403] The preparation process of above-mentioned aspirin slow-release tablet, get hypromellose 0.48, polyacrylic acid resin II No. 0.6, tartaric acid 0.21, Tween-80 are 0.15, 75% ethanol 12 and are mixed with solution, as adhesive In addition, take aspirin 50, starch 1, hypromellose 2, polyacrylic resin II No. 3, and white dextrin 1, put them in a mixer for 10 minutes, and then add agent, wet mixed for 100 seconds to make a soft material, mechanically granulated with a 20-mesh screen, dried in a boiling dryer, and the temperature of the air inlet was controlled not to exceed 100°C, adding talcum powder 3 to the dry granules, and granulated with a 18-mesh screen. The prepared granules are compressed into tablets by a press to obtain aspirin sustained-release tablets.
Embodiment 3
[0405] In the bioavailability test of aspirin sustained-release tablets, single-dose administration testers were randomly divided into two groups (A, B), and carried out according to crossover experiments. Group A was self-made sustained-release tablets, and group B was enteric-coated tablets. The interval between each dose is one week. The subject first collects blood on an empty stomach in the morning, and then takes the medicine with 150ml of warm water. The blood collection time is 0, 1, 1.5, 2, 3, 4, 5, 6, 8, 10, 12, 24 Hours, take venous blood, after processing, take plasma, store it at low temperature, and measure it by HPLC.
[0406] Drug source: test drug, each aspirin sustained-release tablet contains 50 mg of the main drug, and the actual content is 101.20%. The reference substance, aspirin enteric-coated tablets (25mg / tablet), with an actual content of 100.86%, was produced by Jinan No. 3 Pharmaceutical Factory.
[0407] Dosage: single dose of aspirin sustained-rele...
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