Dog that ate 200mg ibuprofen has no stomach issues, eating fine, drinking water, very active, and pink gums so far...how long should I keep a watch for signs of possible toxic issues?

I would highly recommend calling the clinic directly. I think this section is more for questions about what services they provide not for veterinary advice. Please call them.

As far as far as I know dog should not eat a broken at all keep an eye on him make sure he's not poisoned or take him to the vet to make damn sure