Micronized roxatidine acetate pharmaceutical salt pellets and preparation method and applications thereof
A technology of roxatidine acetate and salt pellets, which is applied in the direction of pharmaceutical formulations, medical preparations containing no active ingredients, and medical preparations containing active ingredients, etc. The problem of low drug loading in the layer coating can achieve good stability and improve the effect of sustained release.
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Embodiment 1
[0057] Example 1 Preparation of Roxatidine Hydrochloride Acetate-loaded Pellets
[0058]
[0059] Mechanically pulverize the raw material, weigh 95% ethanol in the prescribed amount, add hydroxypropyl cellulose-SL and the main ingredient under stirring, add talcum powder after stirring evenly, stir, sieve, and set aside. Use a fluidized bed granulation coating machine to spray the drug-loaded coating solution onto the blank pellet core. The fluidized bed coating conditions are: air intake air volume: 120-160m 3 / h, air inlet temperature: 30-50°C, atomization pressure 1.6-2.2kg / cm 2 . During the coating process, the coating pellets were cohesive and hardened, and the coating could not be completed and the theoretical weight gain could not be achieved.
Embodiment 2
[0060] Example 2 Preparation of Roxatidine Hydrochloride Acetate-loaded Pellets
[0061]
[0062] Mechanically pulverize the raw materials, weigh the prescribed amount of absolute ethanol, add hydroxypropyl cellulose-SL under stirring, stir until dissolved, add the main ingredient, stir evenly, then add talcum powder, stir evenly, sieve, and set aside . Spray the drug-loaded coating solution onto the blank pellet core with a fluidized bed granulator, dry and sieve to obtain the drug-loaded pellets. The coating conditions are the same as in Example 1, the absolute ethanol is chemically pure or above, and the weight fraction of ethanol alcohol is greater than 99.5%.
Embodiment 3
[0063] Example 3 Roxatidine Hydrochloride Acetate Loaded Pellets
[0064]
[0065]
[0066] Mechanically pulverize the raw materials, weigh the prescribed amount of absolute ethanol, add hydroxypropyl cellulose-L while stirring, stir until dissolved, add the main ingredient, stir evenly, then add talcum powder, stir evenly, sieve, and set aside . Using a fluidized bed granulation coating machine, using the same conditions as in Example 2, the drug-loaded coating solution was sprayed onto the blank core, dried and sieved to obtain drug-loaded pellets.
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