Alpha Regenerating Antioxidant Formula Higher Nature AcetylLipoic Acetyl L Carnitine and Alpha Lipoic Acid Acetyl L Carnitine 400 mg with Alpha Lipoic Acid 200 mg, 120 Capsules (66088) Puritan's Pride Supplements and chronic pain: What does the research say? Some studies suggest possible benefits for: Acetyl L Carnitine (energy for cells; studied in diabetic nerve pain) Alpha Lipoic Acid (antioxidant; may ease nerve pain,