Drug interactions
Formoterol-mometasone + Sulfamethoxazole
Severity: Minor
Formoterol-mometasone and Sulfamethoxazole: minor 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 drugs have been linked to QT prolongation, although the effect of sulfamethoxazole is weak and inhaled formoterol has limited systemic exposure. Clinical risk is small except in patients with other arrhythmia risk factors.
What this interaction means in plain words
Formoterol-mometasone and Sulfamethoxazole have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Why it happens
Possible additive QT prolongation; evidence for sulfamethoxazole is limited.
What to do
No routine action is needed. Check ECG and electrolytes in patients with known QT prolongation or multiple risk factors.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Formoterol-mometasone and Sulfamethoxazole, 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 Formoterol-mometasone
Frequently asked questions
Can I take Formoterol-mometasone with Sulfamethoxazole?
MediHelp rates the interaction as minor. Formoterol-mometasone and Sulfamethoxazole have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Both drugs have been linked to QT prolongation, although the effect of sulfamethoxazole is weak and inhaled formoterol has limited systemic exposure. Clinical risk is small except in patients with other arrhythmia risk factors.
How serious is the interaction between Formoterol-mometasone and Sulfamethoxazole?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No routine action is needed. Check ECG and electrolytes in patients with known QT prolongation or multiple risk factors.
What other medicines interact with Formoterol-mometasone?
MediHelp also lists interactions of Formoterol-mometasone with, for example, Amiodarone, Amisulpride, Amoxapine. The full list is on the Formoterol-mometasone 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.
