L Carnitine 500 mg Supplement Energy and Fat Metabolism Support Country Life Vitamins LEVOCARNITINE INJECTION, USP1 g per 5 mL vial and 4 g per 20 mL vialFOR INTRAVENOUS USE ONLYRx Only Levocarnitine Tablets (330 mg) Levocarnitine Oral Solution (1 g 10 mL multiple unit container) Levocarnitine Oral Solution (Sugar Free) (1 g 10 mL multiple unit container) For oral use only. Not for parenteral use. Amazon.com: THORNE Acetyl L Carnitine 500 mg Supports Brain Function, Mood & Healthy Nerve Sensations in the Hands & Feet* Third Party Certified Gluten, Dairy & Soy Free 60 Capsules : L Carnitine benefits