take medicines known as "nitrates" (for instance nitroglycerin) use street medicine known as "poppers" like amyl nitrate or amyl nitrite, and butyl nitrate consider any medicines identified as guanylate cyclase stimulators such as riociguat (Adempas) are allergic to sildenafil, as contained in Cialis® and Revatio, or any with the substances in Cia… Read More