I am not a medical doctor and I do not recommend or prescribe nutritional supplements. Bright Line Eating Solutions, LLC has no opinion on nutritional supplements one way or the other. The science on nutritional supplements is expanding and changing daily. An excellent resource for staying current on the latest research is: http://nutritionfacts.org/
Currently, I have stopped taking nearly all nutritional supplements because a growing body of research suggests vitamins are harmful when taken in pill form without the supporting phytonutrients and phytochemicals present in whole foods. An excellent book on this is Whole: Rethinking the Science of Nutrition, by T. Colin Campbell and Howard Jacobson.
I do take Vitamin D in the winter because I live in a northern climate, and we rarely see the sun in the winter. I watch my vitamin B12 levels closely and supplement if necessary because I choose almost exclusively plant-based protein options. I am watching the research on calcium and magnesium and may resume supplementation to improve bone density if I see any studies that suggest taking such supplements will, in fact, improve bone density.
In short, I am wary of taking vitamins, minerals, and supplements, and I believe the research that exists so far justifies this wariness.