Thanks to each of you for your responses and advice. I appreciate the link to the Institute for Altitude Medicine which I will share with my doctor. For the record I don't sleep at altitude, we stay at a motel in Lone Pine. Our acclimatization habit is to spend our first afternoon at the portal, the next day at Horseshoe Meadows and the third day is our day hike. I just can't sleep period, whether from nervous excitement or trying to go to bed early to wake up at 2:00 a.m. The one year we decided we would just go at midnight since we weren't going to sleep anyway was the one time I didn't make it to the summit, so I'm wary of going sleepless again. Regardless that I'm not sleeping at altitude I will be hiking into altitude soon thereafter and want to make sure the meds, the environment and me are all getting along. I really like the idea about the iPhone app too and will be sure to try that before we go up in a few weeks. Thanks again all.