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, Acetyl L Carnitine Free Form 400 mg with Alpha Lipoic Acid 200 mg, 60 Capsules (66087) Puritan's Pride Solaray Aceteyl L Carnitine Alpha Lipoic Acid, 60 Vegetarian Capsules Dillons Food Stores Acetyl L Carnitine 800 mg & Alpha Lipoic Acid 400 mg, 90 Quick Release