Eugene: Hmm. Good point about Benadryl. I've not had a strong reaction to Benadryl, so I'm not sure how to properly address the issue in a list. Perhaps an advisory: "Warning, Benadryl may cause drowsiness; use with caution". What do you think?

Cliff: Good point on micro spikes. Of course an ice axe and crampons might also be appropriate depending on the circumstances.

HJ