What Is L Carnitine? How Does It Work? Feeling low energy, struggling with workouts, or hitting a weight loss plateau? L carnitine boosts energy, supports fat burning, and enhances recovery. Ready to feel your best? Stop in for an L Carnitine injection L Carnitine doesnt magically burn fat, it helps your body use fat as energy. Combine it with training and consistency, and youll feel the difference @Marybosch shows us how L Carnitine will boost L Carnitine