I just became aware of Acli-Mate, a natural prevention remedy for altitude sickness. It's described on their website: http://acli-mate.com/ I haven't seen where it's been discussed or even mentioned in other WB threads about acclimation.

Has anyone used this and has it helped? I'm hiking the JMT this summer and have always experienced elevation sickness sometime in the first 1-3 days. We're planning on spending a week in Tuolumne Meadows beforehand doing day hikes to help acclimate but I wondered if this stuff works.