In some patients, the use of VIAGRA with alpha-blockers can lead to a drop in blood pressure or to fainting medicines called HIV protease inhibitors, such as ritonavir Norvir , indinavir sulfate Crixivan , saquinavir Fortovase or Invirase , or atazanavir sulfate Reyataz some types of oral antifungal medicines, such as ketoconazole Nizoral and itraconazole Sporanox some types of antibiotics, such as clarithromycin Biaxin , telithromycin Ketek , or erythromycin other medicines that treat high blood pressure other medicines or treatments for ED VIAGRA contains sildenafil, which is the same medicine found in another drug called REVATIO. However, others work on a cash-pay basis and don’t partner with insurance companies. More serious side effects may include a drop in blood pressure or an erection that lasts longer than four hours. It’s available in 10 mg and 20 mg tablets. However, others work on a cash-pay basis and don’t partner with insurance companies. Shipping: Discreet, fast shipping is a must.Ad70 years experienced exporter(wholesaler) of Japanese Medicines to parallel traders. More than 10, pharmaceuticals for Unlicensed Supply, Clinical Trials and R&D etc. Sildenafil (Viagra, Revatio) is a moderately priced drug used to treat erection problems in men. It is also used to treat pulmonary arterial hypertension, a serious heart and lung . Learn More IF YOU CHOOSE BRAND-NAME VIAGRA, MAKE SURE YOU GET THE BRAND NAME Your prescription may have been filled with a generic version instead of .