I can't imagine that something which forces them to stop without a REALLY good reason is a good idea. Unnecessary medication too. Just having periods for many years isn't such a hardship - we've all been there. I would be worried about what kind of impact something like that might have on her future fertility, and few things would make me think that a risk worth playing with.

if she has very painful periods I guess you could maybe talk to her doctor about them, but get informed before you consider them seriously, and make sure your DD knows the pros and cons fully.

Kerri.