Drug interactions
Dobutamine + Perphenazine
Severity: Moderate
Dobutamine and Perphenazine: 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
Perphenazine can cause alpha-blockade with hypotension and may prolong the QT interval, while dobutamine increases heart rate and arrhythmia risk. Combined use may produce hypotension, tachycardia or ventricular arrhythmias, particularly in patients with electrolyte disturbances or structural heart disease.
What this interaction means in plain words
Dobutamine and Perphenazine 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.
Dobutamine belongs to Cardiovascular; Perphenazine belongs to Central Nervous System.
Why it happens
Additive cardiovascular and proarrhythmic effects; phenothiazine alpha-blockade and QT prolongation with beta-agonist stimulation.
What to do
Monitor ECG and blood pressure during infusion and correct potassium and magnesium before and during therapy.
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 Dobutamine
Other interactions of Perphenazine
- Ibutilide + Perphenazine Contraindicated
- Perphenazine + Pimozide Contraindicated
- Perphenazine + Thioridazine Contraindicated
- Adagrasib + Perphenazine Major
- Alfentanil + Perphenazine Major
- Amiodarone + Perphenazine Major
Frequently asked questions
Can I take Dobutamine with Perphenazine?
MediHelp rates the interaction as moderate. Dobutamine and Perphenazine 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. Perphenazine can cause alpha-blockade with hypotension and may prolong the QT interval, while dobutamine increases heart rate and arrhythmia risk. Combined use may produce hypotension, tachycardia or ventricular arrhythmias, particularly in patients with electrolyte disturbances or structural heart disease.
How serious is the interaction between Dobutamine and Perphenazine?
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 ECG and blood pressure during infusion and correct potassium and magnesium before and during therapy.
What other medicines interact with Dobutamine?
MediHelp also lists interactions of Dobutamine with, for example, Budesonide-formoterol, Dihydroergotamine intranasal, Dihydroergotamine. The full list is on the Dobutamine page.
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