Methods Nifedipine sustained-released tablets were made with spray-dried solid dispersed phase of NFP and PVP mixed with HPMC.

• 方法用喷雾干燥法将硝苯地平和聚乙烯吡咯烷酮制成固体分散物,再加入羟丙基甲基纤维素等制得硝苯地平缓释片。