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acquire medicines called "nitrates" (like nitroglycerin) use Avenue drugs named "poppers" like amyl nitrate or amyl nitrite, and butyl nitrate take any medicines known as guanylate cyclase stimulators such as riociguat (Adempas) are allergic to sildenafil, as contained in Cialis® and Revatio, or any with the substances in Cialis®.ED is a afflicti