Methylene BlueMethylene ChlorideSkinMethemoglobinemiaColoring AgentsTolonium ChlorideSkin AgingSkin DiseasesSkin NeoplasmsPhotosensitizing AgentsCyclic GMPGuanylate CyclaseNitric OxidePhenothiazinesMuscle RelaxationIndigo CarminePhotochemotherapyPurinonesNitroprussideAntidotesArginineTrypan BlueVasoplegiaSkin Physiological PhenomenaDental LeakageSkin TestsImidazolinesEvans BlueSinglet OxygenAgarEnzyme InhibitorsDysuriaNitroarginineSkin Absorption