This one was too near home. Altitude Sickness can be fatal!
Lot of good advice so far & I unquestionably agree with taking several days to acclimate to final altitude. NOT sure I would trust a pill for quick relief when waking up dead is such a real possibility? BTW, I lived in Aurora, Colo. for a year once in 1982.
1993 Elk Hunt west of Denver around 13K feet. I was a long distance runner then {(7) 5+ mile days weekly} & lifted weights often. No worries...WRONG!
Left Houston around noon for 2 hours to Denver & rented a car for the remainder of the trip that day. Well stocked, well rested, & definitely in shape! When I met the guide in town I felt sluggish. From sea level, any altitude can make you feel funny. I forgot it thinking about the 2 record book moose & single cow we saw coming into the hunt area. Yep, Colorado moose!
Felt too bad to hunt the first morning & stayed in but the condition continued to get worse. 3rd day I knew I was in big trouble! My sickness progressed quickly. Felt I could barely move. Completely lethargic, nothing painful however. LSS, I never hunted elk on that trip & had to return to Houston on an emergency flight. Wrecked the rental hitting the median fence while driving back to Denver! MY GF took me straight from the Houston airport to the doc. He wanted me in the hospital. I talked him into a hypo & meds w/understanding that if not better in 24 hours I'd go to the hospital. Believe me, I'm not a sick, nor doc, nor hospital kind of guy! But, this is as close to dying as I've ever been! Coughed up tennis ball size yellow phlegm for a week! Could NOT get a full breath of air all that time too!
My hunt buds know elk are my favorite game animal. They know also I will not hunt above 6K feet anymore. NEVER will forget Altitude Sickness! Be prepared AND careful partner!