Drug interactions
Quinine + Sodium sulfate / potassium sulfate / magnesium sulfate
Severity: Moderate
Quinine and Sodium sulfate / potassium sulfate / magnesium sulfate: 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
Sulfate-based bowel preparations can cause fluid and electrolyte disturbances. These can increase the risk of arrhythmia in patients taking quinine, which prolongs the QT interval.
What this interaction means in plain words
Quinine and Sodium sulfate / potassium sulfate / magnesium sulfate 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 check electrolytes in patients at risk. Consider an ECG before and after the preparation in patients with cardiac risk factors.
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 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 / potassium sulfate / magnesium sulfate?
MediHelp rates the interaction as moderate. Quinine and Sodium sulfate / potassium sulfate / magnesium sulfate 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. Sulfate-based bowel preparations can cause fluid and electrolyte disturbances. These can increase the risk of arrhythmia in patients taking quinine, which prolongs the QT interval.
How serious is the interaction between Quinine and Sodium sulfate / potassium sulfate / magnesium sulfate?
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 check electrolytes in patients at risk. Consider an ECG before and after the preparation in patients with cardiac risk factors.
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.
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