Calcium and magnesium can block each other's absorption if you take them together. Taking high doses of iron with magnesium can decrease mineral absorption. Very large doses of zinc compete with ...

Iron and magnesium supplements can be used if recommended by a healthcare provider and are safe for most people. Iron and magnesium are best taken at different times of day to avoid interference with ...

Alex Yampolsky, PharmD, is a pediatric clinical pharmacist at Elizabeth Seton Children’s center where he optimizes the comfort and care of his patients. Calcium and magnesium can block each other's ...