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 Injectable L Carnitine for Slimming: Does It Really Work? National Medical Resources Inc Role of L carnitine in exercise training: Anti inflammatory, antioxidant, and metabolic interactions ScienceDirect The effects of L carnitine supplementation on lipid profiles in adults: A systematic review and dose response meta analysis ScienceDirect Acetyl L Carnitine vs L Carnitine: 4 Key Differences Momentous The bright and the dark sides of L carnitine supplementation: a systematic review Journal of the International Society of Sports Nutrition Springer Nature Link