take medicines termed "nitrates" (like nitroglycerin) use Road medications referred to as "poppers" which include amyl nitrate or amyl nitrite, and butyl nitrate take any medicines termed guanylate cyclase stimulators such as riociguat (Adempas) are allergic to sildenafil, as contained in Cialis® and Revatio, or any from the ingredients in Cialis�… Read More