L Carnitine: Benefits, Side Effects, FAQ, Sources, and Dosage Injectable L Carnitine: What It Is, How It Works, and Who Should Use It Mesotherapy Cocktails, Exosomes Regenerative Skin Boosters L Carnitine Injections Nuceria Health, Miami, FL Compounded Carnitine (L) Injection Empower Pharmacy 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