In enzymology, an albendazole monooxygenase (EC 1.14.13.32) is an enzyme that catalyzes the chemical reaction albendazole + NADPH + H+ + O2 albendazole S-oxide + NADP+ + H2O The four substrates of this enzyme are albendazole, NADPH, H+, and O2, whereas its three products are albendazole S-oxide, NADP+, and H2O.