Adding individual minerals enables those who need a specific mineral to get that specific mineral without other unnecessary minerals included in a multi-mineral supplement. A deficiency of a single metal, such as calcium, magnesium, or zinc, is more effectively treated with a single mineral supplement than a broad spectrum one that may not contain enough of that mineral. Additionally, individual mineral supplementation is good for those who are sensitive to excess of certain minerals or correcting a health problem resulting from an individual deficiency. Each mineral works differently in metabolism, and if it’s targeted supplementation you want, a single-mineral supplement will do the trick.