Muscle Food VMI L Carnitine Heat 1500 Fireball L Carnitine with Paradoxine Natty Superstore L Carnitine: Boost Energy & Performance at Ultimate IV L carnitine helps transport fatty acids into your cells' mitochondria, where they can be used for energy. That's why it's often marketed for fat loss and energy support. Common use: People usually take Injectable L Carnitine How It Works & What to Expect?