What is Alpha Lipoic Acid? Alpha lipoic acid is a vitamin-like antioxidant, sometimes referred to as the “universal antioxidant” because it is soluble in both fat & water. It is manufactured in the body & is found in some foods, particularly liver & yeast. What Does Alpha Lipoic Acid Do? May help to maintain healthy blood sugar levels. May help to support a healthy immune system due to its diverse antioxidant properties.