Carnitine: the claims and why it may not work You need L Carnitine and Sugar together for 2 reasons L Carnitine Muscle Building Energy ATP Acetyl L carnitine Puts Better Brain Health, Mood and Energy on Your Agenda L Carnitine: Benefits, side effects, and dosage Amazon.com: Seeking Health Acetyl L Carnitine Acetyl L Carnitine Supplement Supports Energy, Healthy Fat Metabolism, & Memory Health 500 mg, 90 Capsules : Health & Household