I was reading that Ibuprofen works about as well in a recent study in California. I don't know where I saw it but it may have been here. Water , water , water ! Come down if you experience it as it can kill you . It's brain swelling that causes the headache and that is serious business.
I used the WA altitude advantage last year before heading to CO. I thought that there was a noticeable difference, although it may have been more mental than anything. I would take it again! It gives you some wierd tasting burps as well.