get medicines termed "nitrates" (including nitroglycerin) use street medication referred to as "poppers" like amyl nitrate or amyl nitrite, and butyl nitrate just take any medicines referred to as guanylate cyclase stimulators like riociguat (Adempas) are allergic to sildenafil, as contained in Viagra® and Revatio, or any of the elements in Viagra… Read More