Preparation of Nifedipine Sustained-release Tablets (Ⅱ) technology and its influence on release rate
ZHAO Xianliang1 LIU Qianying2 XU Junbo2 ZHANG Na1▲
1.Department of Quality and Technology, China Resources Double-Crane Limin Pharmaceutical (Ji’nan) Co., Ltd., Shandong Province, Ji’nan 250200, China; 2.Product Development Center, China Resources Double-Crane Pharmaceutical Co., Ltd., Beijing 100102, China
Abstract:Objective To study the different prescription factors affecting the dissolution of Nifedipine Sustained-release Tablets(Ⅱ). Methods With the dissolution curves as indexes, the important factors affecting the release rate of Nifedipine Sustained-release Tablets (Ⅱ), such as the particle size of raw materials, fillers, adhesives, surfactants, film coating and so on, were systematically assessed. Results The key formulation parameters controlling the release rate of Nifedipine Sustained-release Tablets(Ⅱ) were established. The results showed that the particle size of raw material D90 was 10-40 μm, the proportion of lactose and microcrystalline cellulose was the same, the concentration of starch slurry was 10%, the dosage of Tween 80 was 0.5%, and the coating weight gain was 3%. Conclusion These established formulation parameters are reasonable and suitable for guiding the industrial production of Nifedipine Sustained-release Tablets (Ⅱ).