n-acetylcysteine or glutathione Effects of N-acetylcysteine, oral (GSH) and a novel sublingual form of GSH on oxidative stress markers: A comparative crossover study Which is better: NAC or

Users of any of these compounds should discuss their use with a physician who can monitor for adverse effects and advise on contraindications including for BPC-157, which carries an unresolved angiogenesis risk that is particularly relevant for individuals with active or suspected cancer

PMID 1530570

Animal data is a necessary first step, but its far from sufficient on its own to draw conclusions about a drugs effectiveness and safety in humans

A useful product review should consider: Identity and amount of glutathione per serving Phospholipid source and formulation Manufacturing controls Stability and storage requirements Testing for contaminants and microbial quality Whether the finished formulation has supporting data Packaging that protects the product from heat, oxygen and light A poorly constructed product does not become effective simply because liposomal appears on the label