Yes, Cialis. The erectile dysfunction drug.
To anyone who’s followed the Viagra story, use of its cousin Cialis to treat muscle disease is not so much repurposing as it is a logical extension, based on regulating blood flow.
Viagra, developed in 1989, began its ascent three years later, when participants in a clinical trial to treat angina, which is chest pain due to blocked blood flow, reported strikingly improved erections. Taking a pill to treat what was about to evolve from “impotence” to “erectile dysfunction” trumped penile implants and injections, or older approaches of ingesting camel hump fat, jackal bile, or various herbs. Pfizer introduced Viagra to the world in 1998. (more…)