L Carnitine vs Pre Workout: Which Supplement Should You Take? L Carnitine: 3 Ways Physique Pros Use This Fat to Fuel Powerhouse SteelFit USA 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 l Carnitine Supplementation in Recovery after Exercise L Carnitine Benefits for Fat Burning and How to Use ICONFIT How Much L Carnitine Per Day: Expert Guide The Science of Good Health