Drug interactions
Magnesium + Sodium polystyrene sulfonate
Severity: Moderate
Magnesium and Sodium polystyrene sulfonate: moderate interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Sodium polystyrene sulfonate binds magnesium in the gut, so it may lower magnesium and cause hypomagnesemia with prolonged use. The legacy concern of raised magnesium levels is not well supported, and the mechanism is poorly characterized.
What this interaction means in plain words
Magnesium and Sodium polystyrene sulfonate can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Magnesium belongs to Gastrointestinal Tract; Sodium polystyrene sulfonate belongs to Miscellaneous.
Why it happens
The resin exchanges sodium for cations including magnesium in the intestinal lumen, increasing fecal magnesium loss and also binding oral magnesium.
What to do
Monitor serum magnesium, potassium and calcium during repeated resin use. Separate oral magnesium from the resin by at least 3 hours and replace magnesium if low.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Magnesium
- Ciprofloxacin + Magnesium Major
- Magnesium + Pancuronium Major
- Magnesium + Rocuronium Major
- Magnesium + Vecuronium Major
- Amikacin + Magnesium Moderate
- Amphotericin b deoxycholate + Magnesium Moderate
Other interactions of Sodium polystyrene sulfonate
Frequently asked questions
Can I take Magnesium with Sodium polystyrene sulfonate?
MediHelp rates the interaction as moderate. Magnesium and Sodium polystyrene sulfonate can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Sodium polystyrene sulfonate binds magnesium in the gut, so it may lower magnesium and cause hypomagnesemia with prolonged use. The legacy concern of raised magnesium levels is not well supported, and the mechanism is poorly characterized.
How serious is the interaction between Magnesium and Sodium polystyrene sulfonate?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor serum magnesium, potassium and calcium during repeated resin use. Separate oral magnesium from the resin by at least 3 hours and replace magnesium if low.
What other medicines interact with Magnesium?
MediHelp also lists interactions of Magnesium with, for example, Ciprofloxacin, Pancuronium, Rocuronium. The full list is on the Magnesium page.
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