Magnesium Oxide
$10.95Price
227g bottle (powder form)
From the manufacturer: "Magnesium Oxide is derived from ancient oceanic deposits and is a rich source of elemental magnesium (58% average). Magnesium is an essential mineral that plays a key role in the activation of amino acids for protein biosynthesis and is highly concentrated in intracellular fluid and bone." It is also said to help stabilize your calcium levels.
More information (note: the following link is to a third-party website, and we do not guarantee its accuracy):
Medline Plus: Magnesium Oxide Information