It's a common painkiller known by such brands as Advil or Motrin. New research suggest the drug's anti-inflammatory properties may help prevent headaches and other symptoms of altitude sickness.
The small study followed climbers who went to an altitude of 12,570 feet. Those who took four 600 milligram doses over 24 hours were less likely to experience altitude sickness.
Researchers say the idea of using an over-the-counter pain reliever to fight off this condition is appealing. But they stress more research is needed.