Injectable L Carnitine 500mg ml (20ml) : Amazon.ca: Health & Personal Care L Carnitine: Benefits, Side Effects, And Dosage, Per Dietitians 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 Injections: A Clinical Guide for Practitioners National Medical Resources Inc L Carnitine Injection 150g (12 Vials) at 8800 piece in Surat ID: 2858169542548