QUOTE: "wonder how this differs from the one Mariel suggested?"

Mag 07 is a combination of powdered magnesium oxide compounds which have been ozonated and stabilized to release mono-atomic or nascent oxygen over 12 hours or more.

Magnesium oxide has an empirical formula of MgO and is also known as magnesia. 'Milk of Magnesia' is magnesium oxide in a water based suspension. It consists of a lattice of Mg2+ ions and O2− ions held together by ionic bonds.

So although both have a laxitive effect, the difference is the addition of oxygen ions in the Mag07 which are released from the molecule in the presence of acid (stomach acid HCl).

Hope that this helps.

With love, Erika