Drug interactions
Dichlorphenamide + Mafenide
Severity: Major
Dichlorphenamide and Mafenide: major 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
Both mafenide, applied to burns, and dichlorphenamide inhibit carbonic anhydrase. Mafenide absorbed over large burn areas can cause metabolic acidosis, and adding systemic dichlorphenamide may deepen this and cause hyperventilation.
What this interaction means in plain words
Dichlorphenamide and Mafenide can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Dichlorphenamide belongs to Miscellaneous; Mafenide belongs to Dermatology.
Why it happens
Additive carbonic anhydrase inhibition leading to bicarbonate wasting and metabolic acidosis.
What to do
Monitor arterial blood gases or serum bicarbonate closely, especially with extensive burns. Consider stopping mafenide or holding dichlorphenamide if significant acidosis occurs.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Dichlorphenamide and Mafenide, 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 Dichlorphenamide
Frequently asked questions
Can I take Dichlorphenamide with Mafenide?
MediHelp rates the interaction as major. Dichlorphenamide and Mafenide can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Both mafenide, applied to burns, and dichlorphenamide inhibit carbonic anhydrase. Mafenide absorbed over large burn areas can cause metabolic acidosis, and adding systemic dichlorphenamide may deepen this and cause hyperventilation.
How serious is the interaction between Dichlorphenamide and Mafenide?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor arterial blood gases or serum bicarbonate closely, especially with extensive burns. Consider stopping mafenide or holding dichlorphenamide if significant acidosis occurs.
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.
