where do you get glutathione from Is the Master Antioxidant? Here’s What Science Says Glutathione: Benefits and Supplements

Stoichiometric relationships between endothelial tetrahydrobiopterin, endothelial NO synthase (eNOS) activity, and eNOS coupling in vivo: insights from transgenic mice with endothelial-targeted GTP cyclohydrolase 1 and eNOS overexpression

Epub 172011 Aug 171416

J Neuropathol Exp Neurol 63(9):901910 Minghetti L, Nicolini A, Polazzi E, Crminon C, Maclouf J, Levi G (1997) Inducible nitric oxide synthase expression in activated rat microglial cultures is downregulated by exogenous prostaglandin E2 and by cyclooxygenase inhibitors

Glutathione is a tripeptide made of three amino acids (glutamine, cysteine, glycine), produced naturally by your liver