l carnitina doping L-carnitina, sustancia que tomó Mo Farah antes del Maratón de Londres 2014 I genuinely forgot': Mo Farah
Description
It is a powerful fat burner & metabolises fat into clean cellular energy

Advances in Environmental Biology 2013

L-Carnitine enhances exercise endurance capacity by promoting muscle oxidative metabolism in mice

A review of the logistic role of l-carnitine in the management of radiation toxicity and radiotherapy side effects
J Physiol 589.4 pp 963-973

Furthermore, both forms of carnitine in this supplement exhibit potent antioxidant properties