l carnitine dietary sources Carnitine: the claims and why it may not work L-Carnitine Benefits, Uses, Dosage, Foods,

Supplementation in high doses (over 1000 mg) relatively shortly before training appears to be advisable, as circulating L-carnitine - in contrast to muscle carnitine - presumably has a vascular-protective effect against oxidative damage in the microvascular area

Essence of life, evolution, stress, and aging

2007;581(Pt 2):431444

The safety and effectiveness of L-carnitine administration remain an issue for scientific investigation

Notably, the direct oxidation of medium-chain fatty acids (MCFAs) is still a controversial issue

However, the study did not include a control group, which limits the ability to attribute observed effects solely to L-carnitine supplementation