SHEET /m/magnesium-oxide · PubChem CID 14792 · REV 2026.07
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Magnesium oxide
from sourceMgO · 40.305 g/mol
magnesia · MgO · Magmitt · Animag
What is Magnesium oxide?
The cheapest magnesium supplement and a strong antacid. Poorly absorbed, so much of it stays in the gut and acts as a laxative. from source
CategoryNutrient
Fig. 1 · 2D structure RDKit
SMILES
O=[Mg]Relative acute toxicity from source
Animal study data · LD50
- Reported LD50
- 810 mg/kg · low toxicity
- Species
- mouse
- Route
- oral
An LD50 describes acute toxicity under experimental conditions and is not a safe or dangerous dose for a person.
Toxicity & hazards
Toxicity · LD50
810 mg/kg · low toxicity · LD50 mouse oral from source
WarningIrritantH319, H335from source