Altitude sickness and acetazolamide

### What you need to know A 25 year old man plans to trek to Everest Base Camp (5545 m) in Nepal for charity. He asks you for a prescription of acetazolamide to prevent mountain sickness. For most people, mountain sickness is a self limiting illness, but it can become life threatening. It is estimated that more than 100 million people per year travel to the hypoxic environments found at altitudes above 2500 m,1 and at least 10% to 20% of...