Did you know L carnitine, a vital amino acid, is naturally produced by your body and found in various foods? While acetyl L carnitine (ALCAR) can be a beneficial supplement for some, most people get 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 What Is Carnitine and Why Is It Important? The Amino Company L Carnitine Benefits for Fat Burning and How to Use ICONFIT Creatine & Acetyl L Carnitine Energy Plus, 0.51 lb Life Extension Acetyl L Carnitine is a modified form of carnitine that has the dual benefit of supporting mental fatigue, improving mood levels and alertness as it crosses the blood brain barrier with ease while supporting