Rubbing it in

Pain relief creams and ointments can get the medicine right to where it hurts, and the smell is often familiar and soothing. But do they work?

When something like a knee hurts, there's a natural tendency to rub it. And if it really hurts, most of us will think about popping a pain-relieving pill of some kind — acetaminophen (Tylenol) for starters, or perhaps one of the nonsteroidal anti-inflammatory drugs (NSAIDs) like aspirin, ibuprofen (Advil, Motrin), or naproxen (Aleve, Naprosyn).