Ingredients / Amino acids & muscle

L-carnitine

Also listed as: L-carnitine L-tartrate, acetyl-L-carnitine

What it is

An amino-acid-like compound your body makes that helps move fats into the cell's energy factories. Meat and dairy are food sources.

Why it is in energy drinks

Marketed for endurance, recovery and fat burning.

Worth knowing

Results are mixed, and healthy people already make enough.

General information, not medical advice. We read what the label lists and don't test what an ingredient does.