ALA is an antioxidant that resembles a vitamin. Alpha-lipoic acid is produced in the human body, but can also be found in broccoli, spinach, yeast, potatoes, carrots, beets, and red meats. The human body is also capable of synthesizing it in small amounts. However, it is also recommended to take it as a supplement. Many believe that ALA is the ideal antioxidant as it dissolves equally well in fat and water. The antioxidant effect requires a daily dose of 200-300 mg.