Hypothyroidism Induced Nonalcoholic Fatty Liver Disease (HIN): Mechanisms and Emerging Therapeutic Options Acetyl L Carnitine Amazon.com: Seeking Health Acetyl L Carnitine Acetyl L Carnitine Supplement Supports Energy, Healthy Fat Metabolism, & Memory Health 500 mg, 90 Capsules : Health & Household L Carnitine 5000 EC Sports Supplements L carnitine benefits, uses & dosage: A complete guide If you are like a lot of people, you may have never heard of carnitine but this important nutrient is critical for our body's ability to optimally burn fat required for energy.