These medicines all work well for ED. From Mayo Clinic to your inbox Sign up for free and stay up to date on research advancements, health tips, current health topics, and expertise on managing health. Your primary care doctor should always know what medications you’re taking, including ED pills prescribed by another provider. Also tell your doctor if you or any of your family members have or have ever had an eye disease such as retinitis pigmentosa an inherited eye condition that causes loss of vision or if you have ever had sudden severe vision loss, especially if you were told that the vision loss was caused by a blockage of blood flow to the nerves that help you see. It works for up to 36 hours.Sildenafil (Viagra) is only approved by the FDA to treat erectile dysfunction in males. While some studies did look at the use of sildenafil (Viagra) in females, more research is needed. If you’re female and have low libido (low sex drive), let your healthcare provider know. Low libido in females can be caused by many different things, such as. iPad. GoodRx is your solution to convenient and affordable medications. Find discounts up to 80% on prescriptions and save money on what matters. The affordable health care and medication app – that’s GoodRx. Save money on meds with a free prescription discount finder and care for yourself without breaking the bank. Sildenafil (Revatio) is used to treat pulmonary arterial hypertension (PAH) in children and adults. It improves your ability to exercise and can help prevent PAH from getting worse. Reviewed by: Aileen Chu, PharmD, BCPS. Christina Aungst, PharmD.