However, this will soon come to an end, as in 2020, Pfizer’s remaining patents on Viagra expire for good. This will make Viagra more accessible and cheaper, but for the millions of men worldwide with erectile dysfunction, it could also spell good news in the form of much needed treatment innovations. For patients with the most severe forms of erectile dysfunction, often resulting from nerve damage due to diabetes or prostate cancer surgery, Viagra typically doesn’t work at all. “For many years after Viagra was developed, little changed in our understanding of erectile dysfunction and how to correct it,” says Soni. “There hasn’t been any real innovation in erectile dysfunction for many years now,” says Soni.

Source: The Guardian June 09, 2019 06:00 UTC