Objective: To investigate the clinical efficacy of Isovitamin A erythromycin gel in the treatment of mild to moderate acne vulgaris. Methods: 208 patients with mild and moderate acne vulgaris were divided into two groups. The control group( 104 cases) was treated with Tazarotene Cream,and the observation group( 104 cases) was treated with isovitamin A erythromycin gel,and the curative effect of the two groups was compared. Results: The total effective rate of the observation group was 93. 27%,higher than th...