The present invention is an orally administered pharmaceutical composition that
provides for the controlled release of magnesium. The composition has an interactive
agent component and a magnesium component which has an enteric coating that controls
the release of the magnesium until the composition is in the small intestine or
colon. The other component is released in the stomach and is substantially absorbed
prior to the release of the magnesium component. Normally, the interactive agent
component decreases the absorption of magnesium when the two components are released
simultaneously in the gastrointestinal tract.