The Viagra prescription price can vary and depends on several factors. One factor is your insurance coverage. Prescription costs can vary with insurance versus without insurance.Do not stop taking sildenafil without talking to your doctor. Your doctor will tell you not to take sildenafil if you are taking street drugs containing nitrates. If you are taking sildenafil to treat erectile dysfunction, follow your doctor’s directions and the guidelines in this paragraph. Such patients must not apply any out-of-pocket expenses incurred using this Savings Offer toward any government insurance benefit out-of-pocket spending calculations, such as Medicare Part D true out-of-pocket TrOOP costs You are responsible for reporting use of this Savings Offer to any private insurer, health plan, or other third party who pays for or reimburses any part of the prescription filled using this Savings Offer, as may be required. John’s wort. If you’re not sure if you’re taking a nitrate, ask your doctor or pharmacist. · Take sildenafil exactly as it was prescribed for you. Follow all directions on your prescription label and read all medication guides or instruction sheets. Revatio is usually taken three times each day, about 4 to 6 hours apart. Viagra is usually taken only when needed, 30 minutes to 1 hour before sexual activity. The Viagra prescription price can vary and depends on several factors. One factor is . 1 day ago · Cost: Branded Viagra is available starting at $ per dose. Generic Viagra is also available through Hims starting at $4 per dose. The FDA does require a prescription for Viagra, both for the.Use the oral syringe provided with your medication to measure and take your dose. Take sildenafil at around the same times every day. Take sildenafil exactly as directed. You need to be sexually excited for it to work. Do not stop taking sildenafil without talking to your doctor. Stop taking VIAGRA and call your healthcare provider right away if you have any sudden vision loss sudden hearing decrease or hearing loss. 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.