These over-the-counter painkillers -- called nonsteroidal anti-inflammatory drugs (NSAIDs) -- include such drugs as Advil, Aleve, Bufferin, Excedrin, Motrin and Nuprin, as well as aspirin. Patients who use blood thinners such as warfarin, Eliquis, Xarelto or Pradaxa should not take them, the researchers said.