The brand states that taking two or three capsules is "safe, but unnecessary." This article did not independently verify that higher-dose safety claim, and you should follow the labeled serving directions unless a healthcare professional advises otherwise
Bertelli A, Giovannini L, Palla R, Migliori M, Panichi V, Andreini B: Protective effect of L-propionylcarnitine on cyclosporine-induced nephrotoxicity
Do not wait until you feel dehydrated
Combine vitamin Crich foods with glutathione-rich foods to improve absorption and effectiveness
It also has vitamin C and additional glutathione to help protect your cells from oxidative stress, scavenge free radicals, support healthy iron absorption and more
Appl Microbiol Biotechnol 80 , 183198 (2008)