The natural distribution area of Aloe vera is probably North Africa and the Arabian Peninsula. However, this is difficult to determine due to extensive cultivation throughout the world. Aloe is often grown as an ornamental plant and for its medicinal properties. Aloe's succulent leaves thrive in low rainfall. Aloe vera does not tolerate hard frosts.
Aloe vera has been used in herbal medicine for at least 2,000 years. The leaves contain a milky sap and a gel, both of which are used for this purpose. The milky juice is a thin, yellow liquid, while the gel is a clear, jelly-like mass. The aloe vera extract contains many biologically active chemicals, especially the various polysaccharides.
Other bioactive compounds of Aloe vera include anthraquinones, anthrones, C-glycosides, lectins, acetylated mannans and polymannans.
Aloe medicines are commonly taken orally and applied topically. Oral uses of aloe vera include supporting digestive health, joint function, skin health, and blood vessel formation.
Constipation is one of the clearest signs that you could benefit from taking aloe vera orally. Other digestive ailments such as stomach ulcers and ulcerative colitis may also indicate that you need aloe vera. Skin conditions such as rashes, itching and unhealthy inflammation are some of the most visible signs that you could benefit from aloe vera supplements. Less common reasons for taking aloe vera include respiratory problems and irregular menstrual cycles.