Free: Contests & Raffles.
In 2007 on Mt. Everest, my team/party and a majority of the mountain partook in a major altitude medication study. We were given Ibuprofen, Diamox, Dex (steroid), placebo, etc. Some results of the study came to a conclusion that Ibuprofen helped just as well as many other "high altitude" specific meds. It specifically relieved the altitude headache problems and aches. and believe me, the headaches are real bad. Due to the swelling and fluid loss, it feels like your brain is being squeezed out the spinal cord hole in your skull.