Well, for headache pain, that's been a mystery for me in China -- at least, until now! I have had a heck of a time trying to find acetamenophen (Tylenol) or ibuprofen (Advil) in China. I finally had some luck at Watson's, a British store that's like Walgreen's or CVS. The problem is that it isn't sold under a recognizeable American brand name -- it's Australian or European brand names!
So here's a tip for all future expats: if you want ibuprofen in China, look for Fenbid. If you're looking for acetamenophen, look for Panadol or Paracetamol.
How do you spell relief? F-E-N-B-I-D!