Drug interactions
Fluphenazine + Tiotropium
Severity: Minor
Fluphenazine and Tiotropium: 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
Fluphenazine has modest anticholinergic activity that may add to tiotropium's effects. Dry mouth, constipation and urinary retention may be increased, though the effect is usually smaller than with low-potency phenothiazines.
What this interaction means in plain words
Fluphenazine and Tiotropium have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Fluphenazine belongs to Central Nervous System; Tiotropium belongs to Respiratory.
Why it happens
Additive weak muscarinic receptor antagonism.
What to do
Monitor for anticholinergic symptoms such as constipation and urinary hesitancy. No dose change is usually required.
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 Tiotropium
Other interactions of Fluphenazine
- Arsenic trioxide + Fluphenazine Contraindicated
- Dofetilide + Fluphenazine Contraindicated
- Fluphenazine + Ibutilide Contraindicated
- Fluphenazine + Pimozide Contraindicated
- Adagrasib + Fluphenazine Major
- Alfentanil + Fluphenazine Major
Frequently asked questions
Can I take Fluphenazine with Tiotropium?
MediHelp rates the interaction as minor. Fluphenazine and Tiotropium have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Fluphenazine has modest anticholinergic activity that may add to tiotropium's effects. Dry mouth, constipation and urinary retention may be increased, though the effect is usually smaller than with low-potency phenothiazines.
How serious is the interaction between Fluphenazine and Tiotropium?
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 for anticholinergic symptoms such as constipation and urinary hesitancy. No dose change is usually required.
What other medicines interact with Tiotropium?
MediHelp also lists interactions of Tiotropium with, for example, Glycopyrrolate inhaled, Indacaterol-glycopyrronium, Revefenacin. The full list is on the Tiotropium page.
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