get medicines referred to as "nitrates" (like nitroglycerin) use street drugs known as "poppers" for instance 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 on the components in Viag

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