Hmm, if memory serves, there was an old paper from 2013 that viagra might help with womens' period pain. (Dilates the blood vessels, right?) Did follow-up stud

Hmm, if memory serves, there was an old paper from 2013 that viagra might help with womens' period pain. (Dilates the blood vessels, right?) Did follow-up studies for that ever happen? Was it affirmed/refuted?