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choose medicines termed "nitrates" (for instance nitroglycerin) use Road drugs called "poppers" including amyl nitrate or amyl nitrite, and butyl nitrate get 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 substances in Viagra®.No, i