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 Subcutaneous Syringes (30 ct.) IV Me Now FL Injectable L Carnitine: Does It Really Work for Fat Loss? How to Self Administer Subcutaneous & Intramuscular Injections L Carnitine Injections Nuceria Health, Miami, FL L CARNITINE 1 GM 5 ML ( L CARNITINE ) 5 X 5 ML IV USE AMPOULES