Atenolol and Glucagon: Interaction Details
AI-assisted, pharmacist-reviewed · AI content regenerated Jul 15, 2026 · Source data updated Jul 11, 2026 · Sources: FDA labeling, DDInter 2.0, cited literature
Atenolol
Glucagon
No brand names on record
How we grade severity & evidence
Severity levels
- Contraindicated: These should generally not be used together.
- Major: Potentially serious — often needs a change or close monitoring.
- Moderate: Can be significant — usually manageable with monitoring.
- Minor: Usually limited clinical impact.
Evidence grades
- Established: Well documented — supported by controlled studies or strong clinical data.
- Probable: Good supporting evidence, though not definitively proven.
- Suspected: Some evidence suggests this interaction, but it is not well established.
- Possible: Limited or conflicting evidence; the interaction may occur.
- Theoretical: Predicted from the drugs' pharmacology; not yet confirmed in people.
Ratings come from the documented interaction literature and are reviewed by a pharmacist. They describe the documented risk of the combination, not what will necessarily happen to you — your dose, timing, and health picture all matter.
If you take atenolol (Tenormin) and you're given glucagon, you might notice a brief bump in your heart rate and blood pressure. Atenolol is a beta-blocker that keeps your heart rate and blood pressure calmer. Glucagon can push in the opposite direction for a short time, so the two can briefly work against each other.
For most people this is short-lived. But if you have heart problems like coronary artery disease, that quick rise matters more. The good news is your care team knows about this and can watch you closely and treat it if needed. Keep taking your medications as prescribed and mention any heart concerns to your pharmacist or doctor.
Effect: Concomitant atenolol and glucagon may cause a transient increase in heart rate and blood pressure. Glucagon has positive inotropic and chronotropic effects; the theoretical concern is a short-lived pressor/tachycardic response.
- Direction: transient increase in pulse and BP (neither agent is metabolically activated; this is a PD interaction, not PK).
- Onset: unspecified, likely acute with glucagon administration.
- Evidence: theoretical; mechanism not fully established.
- Severity: moderate; clinically relevant chiefly in coronary artery disease.
- Management: monitor pulse and BP; the transient rise may require treatment in patients with CAD. Individualize care.
What happens
A transient increase in pulse and blood pressure
Interaction Deep Dive
When glucagon is administered together with beta-blockers, transient elevations in pulse rate and blood pressure can result. In individuals with coronary artery disease, these rises in heart rate and blood pressure may necessitate treatment1.
Why it happens (mechanism)
Unknown
How to manage this interaction
This is usually a short-term effect that your care team can manage. Keep taking your atenolol as prescribed, and understand that glucagon is often used in urgent situations where the benefit outweighs this brief change.
- Your team may monitor your heart rate and blood pressure more closely around the time glucagon is given.
- If a temporary rise happens, especially if you have coronary artery disease, they can treat it as needed.
- Tell your pharmacist or doctor if you have heart disease, chest pain, or a history of high blood pressure so they can plan ahead.
Do not stop or change either medication on your own.
Management is individual — confirm any change with your pharmacist or prescriber.
Common questions
Can I take Atenolol and Glucagon together?
Combining atenolol with glucagon can cause a brief rise in heart rate and blood pressure, which matters most if you have coronary artery disease; your care team can monitor and treat it if needed. Always confirm with your pharmacist or prescriber before making any change.
How serious is the Atenolol and Glucagon interaction?
It is rated moderate. Can be significant — usually manageable with monitoring.
How quickly could this interaction happen?
The documented onset is "unspecified". The timing of this interaction is not well characterized.
How is the Atenolol and Glucagon interaction managed?
This is usually a short-term effect that your care team can manage. Keep taking your atenolol as prescribed, and understand that glucagon is often used in urgent situations where the benefit outweighs this brief change. Your team may monitor your heart rate and blood pressure more closely around the time glucagon is given. If a temporary rise happens, especially if you have coronary artery disease… Management is individual — always follow your own care team's guidance.
How strong is the evidence for this interaction?
The evidence is graded "theoretical". Predicted from the drugs' pharmacology; not yet confirmed in people.
Questions for your pharmacist
- Does my dose of Atenolol or Glucagon need adjusting while I take them together?
- What symptoms should prompt me to call you or my prescriber right away?
- Does the timing of my doses matter for this combination?
- Is there anything you'd monitor while I'm on both?
References (1)
- Product Information: GlucaGen(R) subcutaneous, intramuscular, intravenous injection, glucagon subcutaneous, intramuscular, intravenous injection. Boehringer Ingelheim Pharmaceuticals Inc (per FDA), Ridgefield, CT, 2021. DailyMed
Keep reading about Atenolol
Keep reading about Glucagon
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