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 Mark Hyman, MD Fatigue in Fibromyalgia: Causes & Treatments American Fibromyalgia Syndrome Association (AFSA) PDF) Double blind, multicenter trial comparing acetyl l carnitine with placebo in the treatment of fibromyalgia patients