Payment options: Consider how you’d like to pay. Insurance can help you save even more on consultations and medications. An erection results from an increase in blood flow to the penis. Your health information should remain between your provider and yourself. Refills: See if you can set up automatic refills or order as needed. However, others work on a cash-pay basis and don’t partner with insurance companies.Cost: Branded Viagra costs $90 per dose. Sildenafil is also available through Roman at a. Don’t take sildenafil (Viagra) more than once a day because doing so can put you at higher risk for serious side effects, such as vision loss or low blood pressure. It’s available as a . 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 .