Drug interactions
Fentanyl transdermal + Torsemide
Severity: Minor
Fentanyl transdermal and Torsemide: 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
Opioids may promote antidiuretic hormone release and reduce the effect of loop diuretics. Fentanyl can also cause urinary retention, complicating the assessment of diuretic response.
What this interaction means in plain words
Fentanyl transdermal and Torsemide 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
Opioid-induced antidiuretic hormone release and urinary retention oppose diuresis.
What to do
Monitor urine output, weight and edema, and adjust the torsemide dose if the response is reduced. Check for urinary retention, especially in men with prostatic enlargement.
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?
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Other interactions of Torsemide
Frequently asked questions
Can I take Fentanyl transdermal with Torsemide?
MediHelp rates the interaction as minor. Fentanyl transdermal and Torsemide have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Opioids may promote antidiuretic hormone release and reduce the effect of loop diuretics. Fentanyl can also cause urinary retention, complicating the assessment of diuretic response.
How serious is the interaction between Fentanyl transdermal and Torsemide?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor urine output, weight and edema, and adjust the torsemide dose if the response is reduced. Check for urinary retention, especially in men with prostatic enlargement.
What other medicines interact with Torsemide?
MediHelp also lists interactions of Torsemide with, for example, Amikacin, Amiodarone, Carbenoxolone. The full list is on the Torsemide page.
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