L CARNITINE INJECTION 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 Burn Bundle MICC & L Carnitine Injections for Fat Burn & Energy Olympia Pharmacy Injectable L Carnitine: Does It Really Work for Fat Loss? Beneficial effects of l carnitine supplementation for weight management in overweight and obese adults: An updated systematic review and dose response meta analysis of randomized controlled trials ScienceDirect