Drug interactions
Dichlorphenamide + Trastuzumab deruxtecan
Severity: Moderate
Dichlorphenamide and Trastuzumab deruxtecan: 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
Trastuzumab deruxtecan can cause hypokalemia and vomiting or diarrhea. Combined with dichlorphenamide, potassium depletion may be greater.
What this interaction means in plain words
Dichlorphenamide and Trastuzumab deruxtecan 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; Trastuzumab deruxtecan belongs to Oncology.
Why it happens
Additive potassium lowering from renal loss with dichlorphenamide and drug-related gastrointestinal losses and hypokalemia.
What to do
Monitor serum potassium and bicarbonate during treatment and replace potassium as required.
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 Dichlorphenamide and Trastuzumab deruxtecan, 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 7 days on the web. No card needed.
Other interactions of Dichlorphenamide
Other interactions of Trastuzumab deruxtecan
Frequently asked questions
Can I take Dichlorphenamide with Trastuzumab deruxtecan?
MediHelp rates the interaction as moderate. Dichlorphenamide and Trastuzumab deruxtecan 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. Trastuzumab deruxtecan can cause hypokalemia and vomiting or diarrhea. Combined with dichlorphenamide, potassium depletion may be greater.
How serious is the interaction between Dichlorphenamide and Trastuzumab deruxtecan?
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 potassium and bicarbonate during treatment and replace potassium as required.
What other medicines interact with Dichlorphenamide?
MediHelp also lists interactions of Dichlorphenamide with, for example, Acetazolamide, Acetylsalicylic acid, Ammonium chloride. The full list is on the Dichlorphenamide 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.
