[mehrdadn]

> I'm not so sure. I think the task is to find a treatment and a point in time where the treatment was considered alternative medicine, was then proven to work, and thereafter was considered medicine.

That would imply examples from 400 BC would have the same relevance as examples from 50 years ago. I assumed it was obvious that that's not the case, but it seems I was wrong.

[the_jeremy]

One that is relatively modern is everything cannabis, though depending on your perspective the "alternative medicine" or "medicine" stages may be questionable.