No doc ever prescribed supplements - they have never shown an interest in vitamins/supplementation. However, my PCP just recommended I increase my Vit. D to 5000 IU/day. He didn't think the elevated B12 would be a problem, since apparently the body gets rid of excess B12, which I don't understand - if my blood levels show a high level, apparently I'm not getting rid of the excess? I feel a little uneasy about the elevated B12, and am hoping it's just an anomaly for some of us who are missing their colons (and a couple feet of small intestines), but honestly - it doesn't make sense to me. Thanks for responding, Bubba1028.