L CARNITINE 1 GM 5 ML ( L CARNITINE ) 5 X 5 ML IV USE AMPOULES 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 Linus Pauling Institute Oregon State University How to Self Administer Subcutaneous & Intramuscular Injections Injectable L Carnitine 500mg ml (20ml) : Amazon.ca: Health & Personal Care