Your primary care doctor should always know what medications you’re taking, including ED pills prescribed by another provider. Online ED consultations offer privacy, convenience, and affordability while allowing you to quickly get the medications you need—the same day, with some services. Larger amounts of alcohol are a different story. Erectile dysfunction medications require a prescription from a licensed provider. If approved, the provider will issue a prescription. Okay, so a bit of background on erections. Never purchase ED medications from a site or service that doesn’t require a prescription and medical documentation.Compare prices and print coupons for Viagra (Sildenafil) and other drugs at CVS, Walgreens, and other pharmacies. Prices start at $ Check prices You’ve likely heard of Viagra, Cialis, vardenafil (previously sold as Staxyn and Levitra), and Stendra. These are commonly prescribed treatments for erectile . Typical dosing for Sildenafil (Viagra) The typical dose is to take 50 mg of sildenafil (Viagra) by mouth, about 1 hour before sex, as needed. The maximum recommended dose is .