get medicines named "nitrates" (such as nitroglycerin) use Avenue medication known as "poppers" like amyl nitrate or amyl nitrite, and butyl nitrate just take any medicines identified as guanylate cyclase stimulators such as riociguat (Adempas) are allergic to sildenafil, as contained in Cialis® and Revatio, or any of the ingredients in Cialis®.W