Huts - or a tent basecamp - in the Andes tends to be quite a bit
higher than I'm the Alps or Sierras. Often your first night in the
mountains, will be at the height of many summits. Indeed, our first
night at the Refugio Peru was spent sleeping at an elevaton almost as
high as Mount Blanc. Aside from the time and patience to acclimitize
safely, there are three main ingredients: 1) Vitamin I (ibuprofen), 2)
A pot-boiler, and 3) Coca tea.