L-carnitine is an amino acid naturally produced in the body and found in the brain, liver, and kidneys
7 However, low-fat diets have been shown to reduce testosterone levels, which may affect the amount of muscle gained
Cardiology 2010;116:178-82
Amiri-Moghadam S, Nematy M, Eghtesadi S, Khalili M, Mojarrad M, Jazayeri S, Vosooghinia H, Khosravi A, Salehi M, Beheshti-Namdar A
Leucine, isoleucine, and valine are considered the most anabolic of the nine essential amino acids, 6 which means that they promote muscle building
It may also have some beneficial effects for: heart failure coronary artery disease heart attack recovery peripheral vascular disease, which causes narrow arteries However, it is important to note that L-carnitines heart benefits remain controversial , and further research is necessary