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 Injectable L carnitine vs oral? For me, absorption, fewer GI issues, & energy performance gains make injections the winner. #LCarnitine #Injectable #Bioavailability #MetabolicHealth #EnergyBoost Injectable vs Oral L Carnitine: Which Works Better? AWP L Carnitine Injectable vs Oral: Which Works Better for Canadians Injectable L Carnitine for Slimming: Does It Really Work? National Medical Resources Inc