Aloe Vera contains amino acids and fatty acids. Amino acids are the building blocks of protein. There are around 22 amino acids that are important for the human body, and at least 8 of these are essential. Estimates of the amino acids found in Aloe range from 18-20, with all 8 essential amino acids being included in the plant.  Aloe vera also contains fatty acids; including three plant sterols, which are fatty acids – HDL cholesterol (which lowers fats in the blood), campesterol, and B-sitosterol. These all help to reduce the symptoms of allergies and acid indigestion.