Drug interactions
Isoproterenol + Thiothixene
Severity: Moderate
Isoproterenol 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
Isoproterenol can cause tachycardia and arrhythmias, while thiothixene, an antipsychotic, can cause alpha-blockade with hypotension and may prolong the QT interval. Combined use may exaggerate reflex tachycardia and hypotension.
What this interaction means in plain words
Isoproterenol 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 pharmacodynamic effects: beta-agonist vasodilation and chronotropy with antipsychotic alpha-blockade and possible QT prolongation.
What to do
Monitor blood pressure, heart rate and ECG during co-use, particularly in patients with cardiac disease.
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 Isoproterenol
Frequently asked questions
Can I take Isoproterenol with Thiothixene?
MediHelp rates the interaction as moderate. Isoproterenol 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. Isoproterenol can cause tachycardia and arrhythmias, while thiothixene, an antipsychotic, can cause alpha-blockade with hypotension and may prolong the QT interval. Combined use may exaggerate reflex tachycardia and hypotension.
How serious is the interaction between Isoproterenol 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 blood pressure, heart rate and ECG during co-use, particularly in patients with cardiac disease.
What other medicines interact with Isoproterenol?
MediHelp also lists interactions of Isoproterenol with, for example, Adrenaline-articaine, Bisoprolol, Budesonide-formoterol. The full list is on the Isoproterenol page.
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