L Carnitine doesn't magically burn fat, it helps your body use fat as energy. Combine it with training and consistency, and you'll feel the difference @Marybosch shows us how L Carnitine will boost your American Regent Introduces Levocarnitine Injection, USP; FDA Approved, "AP" Rated, and Therapeutically Equivalent to Carnitor What are the effects and side effects of using L Carnitine IM? CARNITOR (levocarnitine) Injection 1 g per 5 mL vial For Intravenous Use Only.