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Does Magnesium Hydroxide Interact with Sodium Polystyrene Sulfonate?

Magnesium Hydroxide and Sodium Polystyrene Sulfonate have a contraindicated drug interaction according to U.S. FDA drug labeling data. Should not be administered with sodium polystyrene sulfonate. Risk of systemic alkalosis and seizures reported. The mechanism involves cation exchange interaction; magnesium hydroxide reduces resin's potassium exchange capability. Patients taking both medications should consult their healthcare provider before starting, stopping, or changing the dosage of either drug. This information is based on official FDA drug labeling sourced from OpenFDA and the NIH National Library of Medicine.

Severity
Contraindicated
Sodium Polystyrene Sulfonate Class
Potassium Binder
Management
Do not take together
Data Source
U.S. FDA via OpenFDA

How This Interaction Works

The interaction between Magnesium Hydroxide and Sodium Polystyrene Sulfonate occurs because cation exchange interaction; magnesium hydroxide reduces resin's potassium exchange capability. Clinically, this means should not be administered with sodium polystyrene sulfonate. risk of systemic alkalosis and seizures reported. Because of the severity of this interaction, these medications are contraindicated — meaning they should not be taken together under any circumstances. If you are currently taking both, contact your healthcare provider immediately to discuss alternatives.

What To Tell Your Doctor or Pharmacist

If you are taking Magnesium Hydroxide and your doctor is considering prescribing Sodium Polystyrene Sulfonate (or vice versa), make sure to:

  • Inform your doctor and pharmacist of all current medications, including over-the-counter drugs and supplements
  • Ask whether the benefits of combining these medications outweigh the risks for your specific situation
  • Ask what symptoms to watch for that would indicate the interaction is causing problems
  • Ask about alternative medications that do not interact with your current regimen
  • Ask how frequently you should be monitored while these are co-prescribed
  • Never stop or change either medication without first consulting your healthcare provider
💊 Magnesium Hydroxide+💊 Sodium Polystyrene Sulfonate(Sodium Polystyrene Sulfonate)

Severity & Interaction Details

⛔
contraindicated
Avoid this combination
FDA labeling lists this pair as contraindicated. The risk outweighs the benefit in nearly all cases.
Severity scale
MinorContra
On record
Yes
Drug A class
—
Drug B class
Potassium Binder
Source
NLP:sodium polystyrene sulfonate

What this means in plain English

Should not be administered with sodium polystyrene sulfonate. Risk of systemic alkalosis and seizures reported.

What the FDA label says

"Cation exchange interaction; magnesium hydroxide reduces resin's potassium exchange capability"

📖 Source: NLP:sodium polystyrene sulfonate

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Data sourced from U.S. FDA drug labeling via openFDA and the NIH National Library of Medicine. For informational purposes only. Always consult your pharmacist or physician.