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 Alpha Lipoic Acid Erectile Dysfunction: What the Evidence and Experience Show Acetyl L carnitine alpha lipoic acid erectile dysfunction Acetyl L Carnitine Alpha Lipoic Acid Erectile Dysfunction: What the Evidence Shows GNC Acetyl L Carnitine alpha Lipoic Acid 500 mg 200 mg GNC