Drug interactions
Quinine + Sodium sulfate / ?magnesium sulfate / potassium chloride
Severity: Moderate
Quinine and Sodium sulfate / ?magnesium sulfate / potassium chloride: 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
Osmotic bowel preparations can cause fluid loss and electrolyte shifts such as low potassium and magnesium. These shifts can increase the arrhythmia risk of quinine, which itself prolongs the QT interval.
What this interaction means in plain words
Quinine and Sodium sulfate / ?magnesium sulfate / potassium chloride 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.
Why it happens
Bowel-preparation-induced electrolyte disturbances add to the QT-prolonging effect of quinine.
What to do
Ensure adequate hydration and correct electrolyte abnormalities before and after the bowel preparation. Consider an ECG in patients with cardiac risk factors, or defer quinine until after the procedure when feasible.
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?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Quinine and Sodium sulfate / ?magnesium sulfate / potassium chloride, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 14 days on the web. No card needed.
Other interactions of Quinine
- Arsenic trioxide + Quinine Contraindicated
- Dofetilide + Quinine Contraindicated
- Dronedarone + Quinine Contraindicated
- Ibutilide + Quinine Contraindicated
- Mefloquine + Quinine Contraindicated
- Nilotinib + Quinine Contraindicated
Frequently asked questions
Can I take Quinine with Sodium sulfate / ?magnesium sulfate / potassium chloride?
MediHelp rates the interaction as moderate. Quinine and Sodium sulfate / ?magnesium sulfate / potassium chloride 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. Osmotic bowel preparations can cause fluid loss and electrolyte shifts such as low potassium and magnesium. These shifts can increase the arrhythmia risk of quinine, which itself prolongs the QT interval.
How serious is the interaction between Quinine and Sodium sulfate / ?magnesium sulfate / potassium chloride?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Ensure adequate hydration and correct electrolyte abnormalities before and after the bowel preparation. Consider an ECG in patients with cardiac risk factors, or defer quinine until after the procedure when feasible.
What other medicines interact with Quinine?
MediHelp also lists interactions of Quinine with, for example, Arsenic trioxide, Dofetilide, Dronedarone. The full list is on the Quinine page.
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.
