Did you know L carnitine, a vital amino acid, is naturally produced by your body and found in various foods? While acetyl L carnitine (ALCAR) can be a beneficial supplement for some, most people get L Carnitine Benefits, Uses, Dosage, Foods, Side Effects Dr. Axe Amazon.com: Designs for Health Carnitine Synergy 400mg L Carnitine (from Carnitine Tartrate) + 100mg Acetyl L Carnitine Pills Non GMO + Vegetarian Supplement (120 Capsules) : Health & Household Acetyl L Carnitine 250 mg Hypoallergenic L Carnitine 250 mg. Windmill Vitamins Hydrogen Water vs. L Carnitine: Which Better Supports Health? Evolved H2O