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. Magnesium ...

Magnesium oxide doesn’t absorb into the bloodstream as easily as other magnesium compounds, and may cause, “gastrointestinal upset in some individuals,” according to Dr. Pearlman.

Studies suggest that magnesium ions provided by magnesium oxide interrupt the brain signals that may cause migraine. A dose of 400–500 milligrams per day may be required to be effective.

Medically reviewed by Elizabeth Barnes, RDN Key Takeaways Talk to a provider to determine what dosage and type of magnesium you might need.Start with a small dose and take it with food to reduce the ...

Several forms of magnesium are available, each varying in composition and effects on health. For example, magnesium glycinate is often used to help manage stress, whereas magnesium oxide is better ...

Magnesium oxide is a salt combined with magnesium and oxygen, per the National Library of Medicine (NLM). While it’s a common form of magnesium in over-the-counter (OTC) supplements, it’s ...

Ingredientsage is right. Magnesium oxide is absorbed at very low rates in humans. A 2017 study found that rats only absorbed 15% of orally administered magnesium oxide; they excreted the rest.

More information: Vrindaa Somjit et al, An NV− center in magnesium oxide as a spin qubit for hybrid quantum technologies, npj Computational Materials (2025). DOI: 10.1038/s41524-025-01558-w ...

Magnesium oxide is one of the most common and least expensive forms of magnesium for constipation. But there are others, including magnesium citrate or magnesium sulfate (Epsom salts).

Here’s what experts have to say. The best magnesium for stomach issues There are a couple types of magnesium that can help with GI issues, Phillips says.

"Magnesium is important for so many aspects of health. The mineral is involved in more than 300 enzymatic reactions in the body. It's important for bone health, helping to keep your blood sugar ...