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take medicines called "nitrates" (such as nitroglycerin) use Avenue drugs named "poppers" like amyl nitrate or amyl nitrite, and butyl nitrate get any medicines known as guanylate cyclase stimulators like riociguat (Adempas) are allergic to sildenafil, as contained in Viagra® and Revatio, or any with the components in Viagra®.This entry permits t