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 Coenzyme Q10 200mg CoQ10 with ALA and ALCAR Nature's Lab CarniTide & CarniSema: Enhanced Weight Loss Through L Carnitine Comp Lake Hills Wellness L carnitine is a naturally occurring amino acid structure that is made in the human brain, liver, and kidneys. L carnitine plays a critical role in energy production, as it converts fat into energy.