Some men are okay with these side effects, and find signs like facial flushing reassuring because it helps them to know the drug is working. If you experience chest pain, dizziness, or nausea during sex, seek immediate medical help. Data shared with Viatris will be aggregated and de-identified; it will be combined with data related to other Savings Offer redemptions and will not identify you Viatris reserves the right to rescind, revoke, or amend this Savings Offer without notice No membership fees. By stopping this enzyme, the drug allows better blood flow into the penis, meaning better erections. If you are experiencing any of these or develop a painful erection that lasts more than 4 hours, please get medical attention right away.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 . Viagra (sildenafil) is a prescription drug that’s used to treat erectile dysfunction (ED). The drug comes as a tablet you’ll take by swallowing. It’s usually taken . Price without insurance: starts at $80 per dose. Doses: 25, 50, and milligrams (mg) Supply: 30 or 90 days. To get a prescription for Viagra through the .