Cost: Branded Viagra costs $90 per dose. Sildenafil is also available through Roman at $4 to $10 per dose. The first step is scheduling a $15 online appointment with one of Roman’s licensed ...

Ads for supplements claiming to treat erectile dysfunction (ED) are not hard to come by. Some even say these products work better than prescription ED drugs like Viagra (sildenafil). But this and many ...

Nature asked the world’s largest health-research funders what they are doing to study a life stage experienced by half of humanity. Here is what some of them told us.

A boy took his father's Viagra tablets to school and handed them out to his friends during their lunch break. The youngster and five fellow pupils, all aged 12 and 13, were taken to hospital after ...

It has been tempting to view the C.I.A. as omniscient. Yet Coll’s chastening new book about the events leading up to the Iraq War, in 2003, shows just how often the agency was flying blind.