Allan, the question about Nepal might be better answered by your doctor, though maybe someone has experience with high altitudes I'm fairly sure no one has been to Nepal. If you want answers you should post this as a"new discussion".
I have been invited to go to Nepal in November and i need to know if it would be safe for me to do so?? to the height of 21000 feet. Does any one have any info on this ?? would be glad to hear. Thanks