Stendra avanafil : This is an as-needed medication taken 30 minutes before sex and can last up to six hours. They’re often the first line of treatment for trouble getting or keeping an erection, called erectile dysfunction ED. Kidney disease that needs to be treated with dialysis. Methodology We researched 19 online platforms for erectile dysfunction treatment to learn more about the process of ordering ED pills online. That’s not to say there aren’t just as many illegitimate sites. Those with a history of blood pressure or heart issues, hormonal imbalances, mental health issues, and diabetes should consult their doctor before trying PDE5 inhibitors. Some services offer a subscription option where they’ll send your medications every month at a discount.Medically reviewed by Alex Brewer, PharmD, MBA Updated on October 12, Viagra (sildenafil) is a brand-name prescription drug that’s used to treat erectile . Viagra is used to treat erectile dysfunction (impotence) in men. Another brand of sildenafil is Revatio, which is used to treat pulmonary arterial hypertension and . Cart. Transfer your prescription for Sildenafil (Generic for Viagra, Oral Tablet) on Amazon Pharmacy. FREE SHIPPING for Prime members.