How Much L Carnitine Per Day: Expert Guide The Science of Good Health L CARNITINE 1 GM 5 ML ( L CARNITINE ) 5 X 5 ML IV USE AMPOULES Burn fat. Boost energy. Feel unstoppable. L Carnitine injections help convert stored fat into energy, enhance metabolism, and support muscle recoveryso you can power through your workouts and your 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