Drug interactions
Imaging agents + Metoprolol
Severity: Moderate
Imaging agents and Metoprolol: 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
Patients on beta-blockers may have more severe and treatment-resistant anaphylactoid reactions to contrast media, as they respond poorly to epinephrine. This is documented mainly for iodinated contrast; gadolinium reactions are rare.
What this interaction means in plain words
Imaging agents and Metoprolol 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
Beta-blockade blunts the compensatory response to epinephrine during anaphylaxis.
What to do
Identify patients at risk before contrast; have glucagon available for epinephrine-resistant reactions and monitor after administration.
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 Metoprolol
- Metoprolol + Thioridazine Contraindicated
- Amifostine + Metoprolol Major
- Amiodarone + Metoprolol Major
- Atenolol-chlorthalidone + Metoprolol Major
- Atenolol + Metoprolol Major
- Betaxolol + Metoprolol Major
Frequently asked questions
Can I take Imaging agents with Metoprolol?
MediHelp rates the interaction as moderate. Imaging agents and Metoprolol 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. Patients on beta-blockers may have more severe and treatment-resistant anaphylactoid reactions to contrast media, as they respond poorly to epinephrine. This is documented mainly for iodinated contrast; gadolinium reactions are rare.
How serious is the interaction between Imaging agents and Metoprolol?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Identify patients at risk before contrast; have glucagon available for epinephrine-resistant reactions and monitor after administration.
What other medicines interact with Metoprolol?
MediHelp also lists interactions of Metoprolol with, for example, Thioridazine, Amifostine, Amiodarone. The full list is on the Metoprolol page.
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