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get medicines known as "nitrates" (such as nitroglycerin) use Road prescription drugs termed "poppers" like amyl nitrate or amyl nitrite, and butyl nitrate just take any medicines referred to as guanylate cyclase stimulators such as riociguat (Adempas) are allergic to sildenafil, as contained in Cialis® and Revatio, or any in the substances in Cia