Preparation and in vitro release of ginkgo biloba extract sustained-release tablets Optimized formulation of diammonium glycyrrhizinate sustained-release tablet by BOX-Behnken design Preparation of sinomenine hydrochloride delayed-onset sustained-release tablets Optimal separation and purification of extract in Sanao Sustained-release Tablets with macroporous resins by multi index comprehensive score Preparation of hydrogel matrix sustained-release tablets of resveratrol-solid lipid nanoparticles Study on dissolution in vitro of Zhike Pingchuan sustained-release tablets