Method Ethylcellulose (EC) was used as a basic material and mixed with cyclovirobuxine D (CVB-D) and other materials to prepare HSRT.

• 方法以乙基纤维素(EC)作为缓释材料与黄杨宁原料药混合做固体分散物,再加入其他辅料制备黄杨宁缓释片。