Viagra is a brand name-identify version of the generic drug sildenafil. It’s a phosphodiesterase sort five (PDE5) inhibitor. PDE5 can be an enzyme that regulates sure chemical compounds as part of your blood, but thanks to its impact on the human body, it could make it more difficult so that you can get and keep an erection.VIAGRA includes silden

This segment isn't going to cite any sources. Be sure to help enhance this portion by including citations to reputable sources. Unsourced product might be challenged and eliminated.Nitrates may also be found in other medicines like isosorbide dinitrate or isosorbide mononitrate. Some leisure drugs called “poppers” also comprise nitrates, for ex