Fat Loss + Energy. 0 Calorie. 0 Sugar. Increase Energy. Boost Metabolism. Improve Alertness. Accelerate Fat Burning and Increase Energy with L-Carnitine LS3 + Energy. L-Carnitine LS3 + Energy is a delicious sugar free, calorie free, gluten-free drink with added energy from a variety of synergistic ingredients including B-vitamins, green tea, green coffee bean, and caffeine. Take L-Carnitine LS3 + Energy daily to experience support for: Promotion of Fat Loss. Increased Energy and Mental Alertness. Improved Metabolism. Conversion of Fat Into Fuel.