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 Benefits, Uses, Dosage, Foods, Side Effects Dr. Axe Acetyl L Carnitine for Energy Support BioCeuticals L Carnitine Linus Pauling Institute Oregon State University Did you know L carnitine, a vital amino acid, is naturally produced by your body and found in various foods? While acetyl L carnitine (ALCAR) can be a beneficial supplement for some, most people get Are L Carnitine and L Carnosine the Same? Anti Aging Systems