L Carnitine Liquid Benefits Explained: A Guide The Science of Good Health L Carnitine is Underrated. New Meta Review Reminds Us Why. Carnitine: the claims and why it may not work Muscle gain pills L CARNITINE 3B 90Tabs carnitine weight loss 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: Good for diet & muscle building? Feelgood Shop