Most well-known erectile dysfunction therapy, ‘Viagra’ drops endlessly

The most well-known erectile dysfunction treatment, ‘Viagra’ has endlessly been fallen down.

Pfizer’s ‘Viagra’ which led the erectile dysfunction treatment market has rapidly been shrinking due to the aggressive offensive of generic products after the patent expiration in 2012.

Although ‘Viagra’ used to be a large product exceeding KRW 60 billion sales, it cannot even guarantee KRW 10 billion...