Outstanding Ken - we'll try that. If she can tolerate prophylactic Diamox, that beats the hell out of attacking AMS after the fact. Nausea was her her main complaint with sulfa drugs but, of course, that was back in her teen years and she's avoided it ever since. You know how those "allergies" go - "if I took it once, and had something bad happen a few hours late, it was the drug." She may be fine with it, so we'll give it a shot.

Thanks!