Acetyl L Carnitine Acetyl L Carnitine VS L Carnitine: Which One Is Better? L Carnitine Linus Pauling Institute Oregon State University Difference between L Carnitine and L Carnitine L Tartrate 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 The Right Way to Take L Carnitine to Boost Your Training