Now this is interesting

Commonly used pain relievers have added benefit of fighting bacterial infection

Some commonly used drugs that combat aches and pains, fever, and inflammation are also thought to have the ability to kill bacteria. New research reveals that these drugs, better known as nonsteroidal anti-inflammatory drugs, act on bacteria in a way that is fundamentally different from current antibiotics. The discovery could open up new strategies for fighting drug-resistant infections and 'superbugs.'

The positive effects of aspirin for rheumatism and arthritis have been documented since the 1850''s.  It was always assumed there was more than the anti-inflammatory effect, but nobody found it until now.