盐酸地芬尼多双层渗透泵片的制备及体外释放研究

摘要

OBJECTIVE:To prepare Diphenidol hydrochloride double-layer osmotic pump tablets,and study its in vitro release characteristics. METHODS:Double-layer compressing technique and film coating technology were conducted to prepare Diphenidol hydrochloride double-layer osmotic pump tablets. The in vitro releases of it,Difenidol hydrochloride tablets in market,self-made Difenidol hydrochloride single-layer osmotic pump tablets were compared. RESULTS:The formulation was as follow as diphenidol hydrochloride 75 mg,sodium chloride 10 mg,low-molecular-weight polyoxyethylene 15 mg and right amounts of 5% PVP K30 ethanol solution. Booster layer was high-molecular-weight polyoxyethylene 60 mg,sodium chloride 20 mg,PVP K306 mg,right amounts of magnesium stearate. 12 h cumulative release(Q)of prepared double-layer osmotic pump tablets reached 80%,and the release was in line with zero-order kinetic equation. Q15 min of Difenidol hydrochloride tablets had reached 90%;Q12 h of Difenidol hy-drochloride single-layer osmotic pump tablets was only 51.14%. CONCLUSIONS:The prepared Difenidol hydrochloride dou-ble-layer osmotic pump tablets have sustained release effect,with more complete drug release within 12 h than single-layer one.%目的:制备盐酸地芬尼多双层渗透泵片并研究其体外释放特性.方法:采用双层压片技术和薄膜包衣工艺制备盐酸地芬尼多双层渗透泵片,比较其与市售盐酸地芬尼多普通片、自制盐酸地芬尼多单层渗透泵片的体外释放度.结果:盐酸地芬尼多双层渗透泵片处方为盐酸地芬尼多75 mg、氯化钠10 mg、低分子量聚氧乙烯15 mg、5%聚乙烯吡咯烷酮K30乙醇溶液适量;助推层为高分子量聚氧乙烯60 mg、氯化钠20 mg、聚乙烯吡咯烷酮K306 mg、硬脂酸镁适量.所制双层渗透泵片12 h累积释放度(Q)达80%,且释放符合零级动力学方程;盐酸地芬尼多普通片的Q15 min达90%,盐酸地芬尼多单层渗透泵片的Q12 h仅为51.14%.结论:所制盐酸地芬尼多双层渗透泵片具有缓释作用,且较单层渗透泵片12 h内释药更完全.