The Role of L Carnitine in Kidney Disease and Related Metabolic Dysfunctions Amazon.com: Muscle Pharm L Carnitine 3000, The Ultimate Liquid L Carnitine Supplement for High Performance, Supports Metabolism, Hydration & Energy, Zero Sugar, Low Calories, Peach Nectarine Flavor, 32 Servings : Everything Else What Are L Carnitine Injections Used For? Benefits of L Carnitine:, When taken as a supplement, L Carnitine has been shown to have a beneficial impact on weight loss and improved brain function. It has also been linked to improved heart Meet L Carnitine a naturally occurring amino acid that plays a key role in helping the body convert fat into usable energy. It works by transporting fatty acids into your cells to