This medicine works best when you take it on an empty stomach an hour before sex. Use the oral syringe provided with your medication to measure and take your dose. Do not take more or less of it or take it more often than prescribed by your doctor. Before starting, stopping, or changing any medications while taking sildenafil, please get the advice of your doctor or pharmacist. This boosts blood flow and helps you get an erection from sexual activity. These include itraconazole Sporanox, Tolsura , ketoconazole Extina, Ketozole, others and ritonavir Norvir.Savings will vary by medication and by pharmacy. The discount plan organization is Hippo Network LLC, One World Trade Center, Suite New York, NY , , help@test1.ru, test1.ru DRUG_DESCRPTION Compare DRUG_NAME prices and find coupons that could save you up to 80% instantly at . Viagra (sildenafil) is a brand-name oral tablet prescribed for erectile dysfunction. The cost of the drug with and without insurance can depend on several . Sildenafil mg price. Sildenafil is a phosphodiesterase inhibitor used for the treatment of erectile dysfunction. Sildenafil is used to treat erectile dysfunction (impotence; inability to get or keep an erection) in men. It treats erectile dysfunction by increasing blood flow to the penis during sexual stimulation.