Injectable L Carnitine How It Works & What to Expect? Injectable L Carnitine for Slimming: Does It Really Work? National Medical Resources Inc LEVOCARNITINE INJECTION, USP1 g per 5 mL vial and 4 g per 20 mL vialFOR INTRAVENOUS USE ONLYRx Only L Carnitine Injection In Reno, NV Aesthetics Medspa L carnitine is an amino acid derivative that plays a crucial role in the bodys energy production processes. As an injectable supplement, L carnitine has been employed to support various health L Carnitine injections for boosted daily energy