oxidoreductase activity, acting on the CH-OH group of donors, NAD or NADP as acceptor S-nitrosoglutathione reductase (NADH) activity https://github.com/geneontology/go-ontology/issues/23357 https://github.com/geneontology/go-ontology/issues/27135 https://github.com/geneontology/go-ontology/issues/30193 MetaCyc:RXN-17884 Catalysis of the reaction: S-nitrosoglutathione + NADH + H+ = S-(hydroxysulfenamide)glutathione + NAD+. GO:0080007 RHEA:78371 molecular_function S-(hydroxysulfenamide)glutathione (GSNHOH) is an unstable intermediate. At high GSH levels, it is decomposed to glutathione disulfide (GSSG) and hydroxylamine. At low GSH levels, GSNHOH spontaneously converts to glutathione sulfinamid (GSONH2), which can be hydrolyzed to glutathione sulfinic acid (GSOOH) and ammonia.