...makes a good point for taking vitimins with you in a long term survival situation. I already have a supply, as I am conserned about vit C deficiency.
I drink black tea, and when I travel (in fact often when I don't) I put vitamin C in it instead of lemon. I take a small bottle of vitamin C with me, about a month's supply at twenty to fifty times the RDA, depending on your view of the RDA. So I have no worries at all about scurvy.