Alpha-lipoic acid, which is found in foods such as red meat and liver, works as an antioxidant, so it fights disease all over the body. It also regenerates other antioxidants, such as vitamins A and E, and improves insulin sensitivity, so it reduces your risk for cardiovascular disease and diabetes, and it may help reduce blood sugar levels. Dr. Horowitz typically prescribes 300 mg to 600 mg per day in pill form... while those patients with diabetes and/or cardiovascular risk factors will often be prescribed up to 1200 mg per day.

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