People who take over-the-counter pain relievers after a concussion may recover faster than those who do not take pain relievers, according to a preliminary study. The study does not prove that pain relievers improve recovery after concussion; it only shows an association. The cohort study was conducted by the NCAA and US Department of Defense CARE Consortium and looked at NCAA athletes and military cadets who had concussions. A total of 813 people took over-the-counter pain relievers such as acetaminophen or ibuprofen and other non-steroidal anti-inflammatory drugs after their concussion and 848 people did not take any pain relievers. People...