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acquire medicines termed "nitrates" (including nitroglycerin) use Avenue drugs referred to as "poppers" like amyl nitrate or amyl nitrite, and butyl nitrate consider any medicines named guanylate cyclase stimulators for instance riociguat (Adempas) are allergic to sildenafil, as contained in Cialis® and Revatio, or any of the components in CialisÂ