Magnesium oxide is a supplement often used to treat migraine and constipation. It may provide other health benefits, including potentially lowering blood pressure and blood sugar levels.

That said, those who received a higher dosage of magnesium oxide (41.4 mmol daily) showed a decrease in fructosamine, an average measurement of a person's blood sugar over about 2–3 weeks ...

Magnesium oxide is often used to treat indigestion and heartburn. It contains a higher amount of elemental magnesium per dose ...