Levocarnitine Injection: Package Insert Prescribing Info L CARNITINE 1 GM 5 ML ( L CARNITINE ) 5 X 5 ML IV USE AMPOULES Injectable L Carnitine for Slimming: Does It Really Work? National Medical Resources Inc 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 Injection 100ml CanadaVet