Choose medicines referred to as "nitrates" (like nitroglycerin) use Road medicine known as "poppers" like amyl nitrate or amyl nitrite, and butyl nitrate just take any medicines termed guanylate cyclase stimulators including riociguat (Adempas) are allergic to sildenafil, as contained in Viagra® and Revatio, or any with the substances in https://www.facebook.com/RevitalizedRays