Drug interactions
Ipratropium-salbutamol + Thiothixene
Severity: Moderate
Ipratropium-salbutamol and Thiothixene: 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
Thiothixene has anticholinergic properties that may add to those of inhaled ipratropium, though systemic ipratropium exposure is low. Phenothiazine-like antipsychotics may also cause QT prolongation that can be additive with the beta-agonist effects of salbutamol.
What this interaction means in plain words
Ipratropium-salbutamol and Thiothixene 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.
Why it happens
Additive anticholinergic effects, plus additive QT-prolonging and hypokalemic effects of salbutamol with the antipsychotic.
What to do
Monitor for anticholinergic effects such as dry mouth, urinary retention and constipation. Check ECG and potassium if high-dose salbutamol is used in patients with cardiac risk factors.
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?
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Other interactions of Ipratropium-salbutamol
Frequently asked questions
Can I take Ipratropium-salbutamol with Thiothixene?
MediHelp rates the interaction as moderate. Ipratropium-salbutamol and Thiothixene 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. Thiothixene has anticholinergic properties that may add to those of inhaled ipratropium, though systemic ipratropium exposure is low. Phenothiazine-like antipsychotics may also cause QT prolongation that can be additive with the beta-agonist effects of salbutamol.
How serious is the interaction between Ipratropium-salbutamol and Thiothixene?
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 for anticholinergic effects such as dry mouth, urinary retention and constipation. Check ECG and potassium if high-dose salbutamol is used in patients with cardiac risk factors.
What other medicines interact with Ipratropium-salbutamol?
MediHelp also lists interactions of Ipratropium-salbutamol with, for example, Amisulpride, Arsenic trioxide, Carvedilol. The full list is on the Ipratropium-salbutamol page.
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