Carnitine: the claims and why it may not work 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 MUSCLESPORT EST _ 2008 Let's talk about L Carnitine If you're in the gym community, you've probably heard of L Carnitine but what actually is it? L Carnitine Instagram Research Science Update L Carnitine L Tartrate Supplementation Impr Prosource