get medicines termed "nitrates" (for instance nitroglycerin) use Road drugs called "poppers" for instance amyl nitrate or amyl nitrite, and butyl nitrate get any medicines named guanylate cyclase stimulators like riociguat (Adempas) are allergic to sildenafil, as contained in Viagra® and Revatio, or any in the ingredients in Viagra®.While there a… Read More