Chunks of information
Anthraquinones, which exert a marked laxative effect, are contained in the bitter yellow sap of the middle leaf layer of Aloe vera.
- Aloes A Modern Herbal by Mrs. M. Grieve
- Aloe vera "Aloe vera, also known as the true aloe or medicinal aloe, is a species of succulent plant in the genus Aloe that is believed to have originated in the Sudan. The species is frequently cited as being used in herbal medicine." - Wikipedia
- How to grow and care for aloe plants The Garden Helper