A steroidal saponin with diverse biological activities inhibits UGT1A4 (IC50 10.5 UM) cytotoxic to K562 cells (IC50 ~7.5 UM) improves neurological function and decreases neuronal damage in a rat model of spinal cord injury at 100 mg/kg decreases serum levels of glucose insulin and triglycerides in diabetic db/db mice at 50 mg/kg reduces serum MDA levels and stomach MPO activity in a mouse model of ethanol-induced gastric ulcers