G9315 was a complex extracted from Glycyrrhizae inflate Batal, and consisted of 6 flavonoids with significant antioxidant effects. At 2mg dose, it showed strong antipromoting effect on two stage carcinogenesis in mouse skin induced by DMBA plus croton oil. At 10μg/ml dose, it inhibited the chemiluminescence (CL ) of polymorphonuclear leukocyte (PMN ) of Wistar rat induced by croton oil, at 20 μg/ml, it inhibitcd the CL of new born Balb/c mouse epidermis and liver mitochondria induced by croton oil. It also ...