No, it is not necessary to take calcium
together. In fact, if you need to take large amounts (250 mg or more) of either of these, it's best to take them at separate times, as they can compete with each other for absorption. For the same reason, it's best to take other minerals, such as iron
, at a different time of day than calcium or magnesium. For more details, see the What to Consider When Using
section of the Calcium Supplements Review, which includes our Top Picks
among calcium supplements.
Also see our tests and Top Picks
among magnesium supplements in our Magnesium Supplements Review