Mag-Oxide Side Effects
Generic Name: magnesium oxide
Note: This page contains information about the side effects of magnesium oxide. Some of the dosage forms included on this document may not apply to the brand name Mag-Oxide.
For the Consumer
Applies to magnesium oxide: capsules, tablets
Check with your doctor if any of these most COMMON side effects persist or become bothersome:
Seek medical attention right away if any of these SEVERE side effects occur while taking magnesium oxide (the active ingredient contained in Mag-Oxide)
Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); black, tarry stools; nausea; slow reflexes; vomit that looks like coffee grounds.
For Healthcare Professionals
Applies to magnesium oxide: compounding powder, oral capsule, oral tablet
Magnesium toxicity symptoms may include: hypotension, nausea, vomiting, facial flushing, urine retention, ileus, depression, lethargy, muscle weakness, respiratory depression, arrhythmia, cardiac arrest, coma, and death.[Ref]
Frequency not reported: Hypermagnesemia, magnesium toxicity[Ref]
Frequency not reported: Diarrhea, nausea, abdominal cramping[Ref]
1. National Institutes of Health (NIH) "Magnesium: fact sheet for health professionals. Available from: URL: https://ods.od.nih.gov/factsheets/Magnesium-HealthProfessional/" ([2016, Feb 11]):
2. Guerrera MP, Volpe SL, Mao JJ "Therapeutic uses of magnesium." Am Fam Physician 80 (2009): 157-62
Not all side effects for Mag-Oxide may be reported. You should always consult a doctor or healthcare professional for medical advice. Side effects can be reported to the FDA here.
More about Mag-Oxide (magnesium oxide)
- Side Effects
- During Pregnancy or Breastfeeding
- Dosage Information
- Drug Interactions
- Support Group
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- Drug class: minerals and electrolytes
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