Aloe emodin

Aloe emodin is an anthraquinone present in aloe latex, an exudate from the aloe plant. It has a strong stimulant-laxative action. Aloe emodin is not carcinogenic when applied to the skin, although it may increase the carcinogenicity of some kind of radiation. Aloe emodin is found in the gel, sap or leaves of Aloe vera ,the bark of Frangula (Rhamnus frangula) and Cascara Sagrada (Rhamnus purshiana), the leaves of Senna (Cassia angustifolia), and the rhizome of Rhubarb (Rheum rhaponticum). It has a marked anti-viral effect in vitro against both herpes simplex virus (HSV) type 1 and 2.