Along this line, I have folded in my wallet a small sheet of paper in very small fonts listing all my medications, the medical conditions they are for, my dosages, the dates I began taking them, and the prescribing doctors' names. It would probably be a good idea to also have a copy of this information in my tripping canoe.
However, I'm not sure the medical kit is the best place for this information or the ones listed by Mike. After all, all these things are for the benefit of someone else when you are presumably incapacitated, unconscious, dead, or missing. I'm not sure a medical kit is the place someone would think to look for identification and other personal information.
It might be better to put copies of all these things in a small waterproof pouch, like a cell phone pouch, with a label saying something like "Personal Identification and Medical Information". You could clip this I.D. pouch onto your canoe or your person, or put it in your day bag.
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