get medicines referred to as "nitrates" (including nitroglycerin) use Road medicine termed "poppers" such as amyl nitrate or amyl nitrite, and butyl nitrate get any medicines termed guanylate cyclase stimulators like riociguat (Adempas) are allergic to sildenafil, as contained in Cialis® and Revatio, or any on the substances in Cialis®.No dose ad