Viagra and many other drugs were discovered by chance. Now science is hoping to change that.

“Repurposing” approved medications could dramatically cut development time and cost.
Read more: https://www.washingtonpost.com/national/health-science/viagra-and-many-other-drugs-were-discovered-by-chance-now-science-is-hoping-to-change-that/2018/05/11/8b13e058-47ce-11e8-9072-f6d4bc32f223_story.html?utm_term=.268f2a20f3e6?source=Snapzu