Alpha-lipoic acid is an antioxidant that is made naturally in the body and also found in foods. It is used to break down carbohydrates and to make energy.Alpha-lipoic acid can be eaten in foods, such as red meat, carrots, beets, spinach, broccoli, and potatoes. It is also available in supplements. Because alpha-lipoic acid seems to work like an antioxidant, it might provide protection to the brain and also be helpful in certain liver diseases.

Side Effects:
The most common side effects are headache, heartburn, nausea, and vomiting.

Precautions:
Alpha-lipoic acid can decrease blood sugar levels. Alpha-lipoic acid might interfere with blood sugar control during and after surgery. Stop taking alpha-lipoic acid 2 weeks before elective surgical procedures.When taken by mouth, alpha-lipoic acid is possibly safe. It’s been used safely during pregnancy in doses of up to 600 mg daily for up to 4 weeks.