Drug interactions
Dichlorphenamide + Quetiapine
Severity: Moderate
Dichlorphenamide and Quetiapine: 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
Dichlorphenamide causes renal potassium wasting and can lower serum potassium, while quetiapine can prolong the QT interval. Hypokalemia increases the risk of QT-related arrhythmias such as torsades de pointes.
What this interaction means in plain words
Dichlorphenamide and Quetiapine 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.
Dichlorphenamide belongs to Miscellaneous; Quetiapine belongs to Central Nervous System.
Why it happens
Carbonic anhydrase inhibition produces potassium loss, and the resulting hypokalemia adds to the QT-prolonging potential of quetiapine.
What to do
Check serum potassium before starting and periodically during therapy, and correct hypokalemia promptly. Obtain an ECG in patients with other QT 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 Quetiapine
- Adagrasib + Quetiapine Major
- Amiodarone + Quetiapine Major
- Amisulpride + Quetiapine Major
- Amoxapine + Quetiapine Major
- Anagrelide + Quetiapine Major
- Apalutamide + Quetiapine Major
Other interactions of Dichlorphenamide
Frequently asked questions
Can I take Dichlorphenamide with Quetiapine?
MediHelp rates the interaction as moderate. Dichlorphenamide and Quetiapine 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. Dichlorphenamide causes renal potassium wasting and can lower serum potassium, while quetiapine can prolong the QT interval. Hypokalemia increases the risk of QT-related arrhythmias such as torsades de pointes.
How serious is the interaction between Dichlorphenamide and Quetiapine?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Check serum potassium before starting and periodically during therapy, and correct hypokalemia promptly. Obtain an ECG in patients with other QT risk factors.
What other medicines interact with Quetiapine?
MediHelp also lists interactions of Quetiapine with, for example, Adagrasib, Amiodarone, Amisulpride. The full list is on the Quetiapine page.
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