Sorry to hear about your stomach problems. For what it’s worth generically, I looked up the drug interactions for ibuprofen and there was mention of ibuprofen causing GI bleeding in some cases. Not that it happened to you, but it might not be good medicine to take in your case as you’ve said. In case your doctor disagrees, and you need to find ibuprofen in Taipei, the link below from a prior thead has some info:
Hope you’re feeling better soon.
Seeker4