Trace Minerals Complex by Seeking Health provides 10 essential trace elements in forms that are well-tolerated and easily absorbed, plus silica from horsetail. Iron is excluded, as routine iron supplementation is not required by the majority of adult men and women. Shilajit extract is added to help support optimal nutrient absorption. Trace minerals, or "microminerals," are important nutrients that the body needs in small amounts to maintain proper function. Typically taken up from the soil by plants, trace minerals may be lacking in the modern diet due to decreasing nutrient content in the soils used in commercial farming.