Drug interactions
Nifedipine + Sodium sulfate / ?magnesium sulfate / potassium chloride
Severity: Minor
Nifedipine and Sodium sulfate / ?magnesium sulfate / potassium chloride: minor 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
Magnesium absorbed from bowel preparations can raise serum magnesium, which has calcium channel blocking properties. With nifedipine this may add to hypotension and neuromuscular weakness, mainly in renal impairment or with dehydration.
What this interaction means in plain words
Nifedipine and Sodium sulfate / ?magnesium sulfate / potassium chloride have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Why it happens
Additive calcium antagonism from elevated serum magnesium and nifedipine.
What to do
Ensure adequate hydration and monitor blood pressure, especially in renal impairment. Check serum magnesium if weakness or hypotension develops.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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Other interactions of Nifedipine
Frequently asked questions
Can I take Nifedipine with Sodium sulfate / ?magnesium sulfate / potassium chloride?
MediHelp rates the interaction as minor. Nifedipine and Sodium sulfate / ?magnesium sulfate / potassium chloride have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Magnesium absorbed from bowel preparations can raise serum magnesium, which has calcium channel blocking properties. With nifedipine this may add to hypotension and neuromuscular weakness, mainly in renal impairment or with dehydration.
How serious is the interaction between Nifedipine and Sodium sulfate / ?magnesium sulfate / potassium chloride?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Ensure adequate hydration and monitor blood pressure, especially in renal impairment. Check serum magnesium if weakness or hypotension develops.
What other medicines interact with Nifedipine?
MediHelp also lists interactions of Nifedipine with, for example, Amifostine, Amlodipine-benazepril, Apalutamide. The full list is on the Nifedipine page.
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