How Long Should You Take L Carnitine for Weight Loss Results? 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 Liquid Carnitine 3000 Burn Fat, Boost Metabolism & Enhance Endurance Power your workouts and push your limits L Carnitine 3500mg Liquid helps support fat loss, boosts metabolism, and improves endurance so you can perform better every day. Boosts Energy Supports