Seneciphylline, a pyrrolizidine alkaloid, one of the main components of Chinese medicine herb Tusanqi, which is a reason of the hepatic sinusoidal obstruction syndrome (HSOS). In addition, experiments on rats have shown that seneciphylline had adverse effects on the development and organic morphodifferentiation of embryos, thus the pregnant people exposed to Hebra may get potential risk on the fetus.
