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 PLUS ( L CARNITINE L TARTARATE 1000 MG + ZINC GLUCONATE 50 MG ) 20 FILM COATD TABLETS l carnitine: Nutrition, pathology, and health benefits ScienceDirect