Do not drink grapefruit juice if you’re taking sildenafil Revatio for pulmonary hypertension. If you see air bubbles in the syringe, repeat the steps. Viagra is also informally known as “vitamin V”, “the blue pill”, or “blue diamond”, as well as various other nicknames. Different brands may not work the same way. Sildenafil usually should not be taken more than once every 24 hours. 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.AdBrowse & discover thousands of brands. Read customer reviews & find best sellers. Find deals and low prices on the best erection pills at test1.ru AdGet a Prescription for ED treatment, discreetly deliverED to your test1.ruive Offers · How It Works · Get More InfoService Catalog: P.E. Treatments, GET MORE INFO, Terms & Conditions and more. Sildenafil (Viagra) is used to treat erectile dysfunction (impotence; inability to get or keep an erection) in men. Sildenafil (Liqrev, Revatio) is used to improve the ability to exercise in adults (Liqrev, Revatio) and children 1 year of age and older (Revatio) with pulmonary arterial hypertension (PAH; high blood pressure in the vessels carrying blood to the .