Levocarnitine, commonly known as L Carnitine, is a naturally occurring compound that the body produces from the amino acids lysine and methionine. It plays a critical role in energy production by transporting fatty L Carnitine Injection Levocarnitine IV Carnitine: Genetic Variants Affecting Mitochondrial Energy and Health 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 1500 mg with Vitamin B Promote Physical Performance MaxionNutrition L CARNITINE PLUS ( L CARNITINE L TARTARATE 1000 MG + ZINC GLUCONATE 50 MG ) 20 FILM COATD TABLETS