l Carnitine and Acetyl l carnitine Roles and Neuroprotection in Developing Brain Neurochemical Research Springer Nature Link L Carnitine: The Energy Booster Your Body Loves Turn fat into fuel and power up your recovery with one of our favorite performance vitamins. Boosts metabolism & fat burning Acetyl L Carnitine is more thought of as a fat burner. It's actually powerful tool for athletes looking to improve endurance, energy, and mental performance. Here's how you can integrate it into your routine for l carnitine: Nutrition, pathology, and health benefits ScienceDirect ALCAR Acetyl L Carnitine for Cognitive Support AOR Inc.