Liquid L Carnitine Energy Frontiers L carnitine: new perspectives on the management of preterm infants 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 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 Acetyl L Carnitine Role of L carnitine in the transport of long chain fatty acids through Download Scientific Diagram