Any proof of increasing androgen receptors with carnitine? L carnitine is a must in your regimen #gym #testosterone #supplements L Carnitine Tartrate Supplementation for 5 Weeks Improves Exercise Recovery in Men and Women: A Randomized, Double Blind, Placebo Controlled Trial Anabolism often gets treated like a single switch, but muscle growth depends on several systems that work together after training creates the initial stress. Gabriel Alizaidy, MD, MS L Carnitine Libido: What the Research Actually Shows