"Chelated magnesium" refers to a form of magnesium that has been combined with another compound, usually an amino acid, to improve its absorption and effectiveness in the body. Full definition
Personally, I like chelated magnesium because it's easy to take, but I've had success with angstrom and the oil. (bodyunburdened.com)
Examples include chlorophyll (which chelates a magnesium atom), hemoglobin (which chelates an iron atom) and enzymes that chelate copper, iron, zinc and manganese. (westonaprice.org)
Currently I am taking 200 mg of chelated Magnesium with TRAACS. (clearskinforever.net)