Alpha-lipoic acid is an antioxidant that is made naturally in the body and is also found in foods. It is used to break down carbohydrates and to make energy.

People most commonly use alpha-lipoic acid for nerve pain. It is also used for obesity, altitude sickness, aging skin, high levels of cholesterol or other fats in the blood, and many other purposes.

https://www.webmd.com/vitamins/ai/ingredientmono-767/alpha-lipoic-acid