When following the specific carbohydrate diet, what vit/minerals might need supplementation in kids?

Unknown. This diet does not have any supporting scientific evidence for helping inflammatory bowel disease (ibd). There's no medical consensus about its safety. Specific vitamins/minerals aren't thought to be deficient in the diet, but the lack of short chain fatty acids (fuel for colonic cells) and decreased calories may be harmful. You should discuss with your doctor before starting a child on this diet.