Senna leaves

Senna contains anthraquinones, including dianthrone glycosides (1.5% to 3%), sennosides Aand B (rhein dianthrones), and sennosides C and D (rhein aloe-emodin heterodianthrones).Numerous minor sennosides have been identified and appear to contribute to senna’slaxative effect. The plant also contains free anthraquinones in small amounts, including rhein,aloe-emodin, chrysophanol, and their glycosides.