RT Book, Section A1 Howland, Mary Ann A2 Nelson, Lewis S. A2 Howland, Mary Ann A2 Lewin, Neal A. A2 Smith, Silas W. A2 Goldfrank, Lewis R. A2 Hoffman, Robert S. SR Print(0) ID 1163003951 T1 Methylene Blue T2 Goldfrank's Toxicologic Emergencies, 11e YR 2019 FD 2019 PB McGraw-Hill Education PP New York, NY SN 9781259859618 LK accessemergencymedicine.mhmedical.com/content.aspx?aid=1163003951 RD 2024/04/19 AB Methylene blue is an extremely effective antidote for acquired methemoglobinemia. Methylene blue has other actions, including the inhibition of nitric oxide synthase and guanylyl cyclase and the inhibition of the generation of oxygen free radicals. These actions likely explain the beneficial effects of methylene blue in the treatment of refractory hypotension, hepatopulmonary syndrome, priapism, sepsis, and malaria; the modulation of streptozocin-induced insulin deficiency; the prevention and treatment of ifosfamide-induced encephalopathy; and the reduction of the development of postsurgical peritoneal adhesions.15,16,21,24,34,44,53,64