[Studies on dissolution of icariin from wuxian huichun capsules].

The accumulated dissolution of icariin from the traditional Chinese Wuxian Huichun capsules has been determined by roll-basket and three-wavelength UV spectrophotometry within 100 minutes. The values of T50 and Td for samples c, d are significantly greater than those for a, b. It is thus essential to determine the dissolution as a means to control the quality of capsules.