LisinoprilSulfonesPurinesPiperazinesPhosphodiesterase InhibitorsPhosphodiesterase 5 Inhibitors3',5'-Cyclic-GMP PhosphodiesterasesErectile DysfunctionCyclic Nucleotide Phosphodiesterases, Type 5Angiotensin-Converting Enzyme InhibitorsPenile ErectionHomosexuality, MaleVasodilator AgentsMethamphetamineCyclic GMPGeorgiaChlorthalidoneUnsafe SexPeptidyl-Dipeptidase AAmlodipineNisoldipineAntihypertensive AgentsEnalaprilRisk-TakingSexual BehaviorAngiotensin IHypertensionBlood PressureRenin-Angiotensin SystemDoxazosinEnalaprilatCaptoprilOliguriaFosinoprilLosartanDouble-Blind MethodNephrosisSodium Chloride Symporter InhibitorsDiuretics