choose medicines referred to as "nitrates" (such as nitroglycerin) use Road drugs called "poppers" like amyl nitrate or amyl nitrite, and butyl nitrate take any medicines termed guanylate cyclase stimulators for instance riociguat (Adempas) are allergic to sildenafil, as contained in Cialis® and Revatio, or any in the components in Cialis®.Gentle