Alpha lipoic acid is an organosulfur compound derived from caprylic acid.ALA is produced in the body and is an anti-oxidant. You can get ala’s from food like yeast, broccoli, potatoes, spinach but the amount of ALA getting from this food does not produce so noticeable difference in the body. This ALA is responsible for aerobic metabolism in the body. People are taking supplements of ALA. It is an excellent anti-oxidant which prevent cellular damage.