Make sure to get an estimate of when you can expect your prescription in the mail. Your primary care doctor should always know what medications you’re taking, including ED pills prescribed by another provider. That depends on the online pharmacy and is changing. Other warning signs of an unsafe online pharmacy include outdated medication, no customer service, or suspiciously low prices. However, some states require a live video consultation. These drugs also have to be specially labeled, so many online pharmacy companies have already elected not to deliver them. We considered cost, medications available, and whether generic versions were offered to help reduce costs.Brand-name vs. generic Reducing long-term drug costs Financial assistance Next steps Viagra (sildenafil) is a brand-name oral tablet prescribed for erectile . 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 . According to price-comparison site , generic Revatio will cost you as little as $ per pill, depending on where you fill your prescription. That’s .