It takes time to acclimatize - realistically, there are no shortcuts.
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Do be aware that HAPE and HACE (high altitude pulmonary/cerebral edema) can be fatal. Know the symptoms and descend immediately.
Spot on!
There are lots of good references out there. For example see
Altitude Illness: AMS, HAPE, and HACE.
For prevention see
Wilderness Medical Society Consensus Gui...ltitude Illness
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"Toto, I've a feeling we're not in Kansas any more."
-Dorothy, in The Wizard of Oz