Description
Spring Valley Magnesium Oxide is a common over-the-counter mineral supplement used to support magnesium levels in the body.
What it’s used for
- Magnesium supplementation: Helps prevent or treat low magnesium levels.
- Muscle and nerve support: Magnesium plays a role in muscle function and nerve signaling.
- Bone health: Supports calcium absorption and bone strength.
- Digestive aid: At higher doses, magnesium oxide can act as a mild laxative for occasional constipation.
- Sometimes used to help with heart rhythm regulation and overall metabolic function.
How it works
Magnesium is an essential mineral involved in over 300 biochemical reactions, including:
- Energy production
- Protein synthesis
- Blood pressure regulation
Magnesium oxide specifically has a high elemental magnesium content, but it is less easily absorbed compared to other forms like magnesium citrate or glycinate
Important cautions
- Avoid excessive intake—too much magnesium can lead to serious issues like low blood pressure or irregular heartbeat.
- People with kidney problems should consult a doctor before use.
- Can interact with certain medications (e.g., antibiotics, diuretics).




