Carnitine: the claims and why it may not work L carnitine is an amino acid derivative that plays a crucial role in the bodys energy production processes. As an injectable supplement, L carnitine has been employed to support various health Injectable L Carnitine How It Works & What to Expect? L Carnitine Benefits for Fat Burning and How to Use ICONFIT What Are L Carnitine Injections Used For? Carnitine: Genetic Variants Affecting Mitochondrial Energy and Health