Acetyl L Carnitine and Lipoic Acid Erectile Dysfunction NIH 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 is a modified form of carnitine that has the dual benefit of supporting mental fatigue, improving mood levels and alertness as it crosses the blood brain barrier with ease while supporting Acetyl L Carnitine and Lipoic Acid Erectile Dysfunction NIH ALCAR Supplement for Cognitive Function and Stamina Acetyl L Carnitine 500 mg