Injectable L Carnitine How It Works & What to Expect? Integrative physiology of lysine metabolites Physiological Genomics American Physiological Society L Carnitine HCL 2000mg 5ml Injection, 5 Vials at 800 piece in Ghaziabad ID: 2853223343555 Early research into L carnitine was often cited as underwhelming, showing negligible changes in muscle carnitine content and fat loss outcomes. However, these findings may have been limited by a short study window