Popular ED medications found online include: Viagra sildenafil : As the first FDA-approved PDE5 inhibitor for ED, sildenafil is taken 30 minutes to four hours before sexual intercourse to help achieve and maintain an erection. Yes, ED pills can cause side effects. While each PDE5 inhibitor differs slightly, they’re very similar in treating erectile dysfunction. Your primary care doctor should always know what medications you’re taking, including ED pills prescribed by another provider. However, some states require a live video consultation. However, all medications come with risks.AdWith RexMD you’re saving time and money with our Viagra delivery. Get started now. Reliable E.D. meds prescribed by real doctors. Get your free & private online visit todayFree Shipping · Real Doctors · Personalized Plan · Discreet Packaging. AdMany Americans pay far too much for their prescriptions. We’re here to help. GoodRx® finds the lowest prices at every pharmacy near you. See how much you can save!No Credit Card Required · Top Medical App & Site · Prescription Discounts”Working to be “the most powerful patient advocate in America”” – Forbes. Best Low Cost: GoodRx Fastest Delivery: Blink Health: Sesame Sign Up Now Key Specs Cost: Consultation prices vary based on the prescriber; $5 generic .