From brain to muscle, L Carnitine plays a key role in energy metabolism, endurance, and recovery by supporting efficient fat to energy conversion. L Carnitine Does L Carnitine Work for Fat Loss? A Dietitian Explains L Carnitine ESN Helpcenter English L Carnitine injection is recommended at 1 ampule every 2 3 days for best results. The L Carnitine is taken intravenously either by normal injection or using a butterfly needle. After taking this L Carnitine, you The Right Way to Take L Carnitine to Boost Your Training