get medicines referred to as "nitrates" (such as nitroglycerin) use Avenue medications referred to as "poppers" such as amyl nitrate or amyl nitrite, and butyl nitrate get 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 elements in Cia