Staxyn treats males from sexually impotent by allowing a greater blood flow into the penis when a man taking the medication is sexually aroused. It works only with sexual stimulation and does not increase sexual desire. Staxyn should not be used with the following like nitrate drug for chest pain or heart problems, including nitroglycerin, isosorbide dinitrate, isosorbide mononitrate, with certain other medicines can cause a sudden and serious decrease in blood pressure. Do not take staxyn if you also take riociguat that is Adempas or a nitrate drug such as nitroglycerin.