Dulaglutide and Atenolol: 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
Dulaglutide
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.
Atenolol (a beta-blocker for blood pressure) and dulaglutide (Trulicity, for type 2 diabetes) can affect each other. Dulaglutide lowers your blood sugar. The tricky part is that atenolol can hide one of the usual warning signs of low blood sugar, a fast or pounding heartbeat. Other warning signs, like sweating and dizziness, usually still show up. Your blood sugar could also swing a little higher or lower than expected.
The good news: this is very manageable. Your care team may check your sugar more often or fine-tune your diabetes medicine. Keep taking both as prescribed, and let your doctor or pharmacist know if you feel shaky, sweaty, or confused.
Effect: Combined use of atenolol (a relatively cardioselective beta-blocker) with dulaglutide (a GLP-1 receptor agonist) may alter glycemic control (hypo- or hyperglycemia) and can blunt or mask adrenergically mediated hypoglycemia warning signs, notably tachycardia. Diaphoresis and dizziness are generally preserved.
- Mechanism: Beta blockade plus altered glucose metabolism; PD interaction (neither drug is a prodrug).
- Direction/magnitude: Variable; masking of symptomatic hypoglycemia is the main concern.
- Onset: Delayed. Evidence: Probable. Severity: Moderate.
- Management: Increase glucose monitoring; individualize antidiabetic dosing. If atenolol is withdrawn, watch for loss of glycemic control.
What happens
Hypoglycemia or hyperglycemia; decreased symptoms of hypoglycemia
Interaction Deep Dive
Taking antidiabetic medications together with beta-blockers can produce either hypoglycemia or hyperglycemia, and may also mask the warning signs of low blood glucose23. While tachycardia may be blunted, other hypoglycemic manifestations such as dizziness and sweating are not necessarily affected1. Beta blockers that are nonselective have the capacity to enhance hypoglycemia brought on by insulin and to hinder the return of serum glucose to normal levels. In individuals who have both heart failure and diabetes, hyperglycemia may become more severe7. It may become necessary to check glucose more often or to modify the dose of the antidiabetic drug23. When these agents are used together, watch carefully for indications of hypoglycemia, and should the beta-blocker be discontinued, monitor for a loss of glycemic control4.
Why it happens (mechanism)
Altered glucose metabolism and beta blockade
How to manage this interaction
This combination is commonly used and manageable with a few precautions.
- Keep taking both exactly as prescribed unless your prescriber tells you otherwise.
- Your team may check your blood sugar more often, and your diabetes medicine dose may need to be adjusted and individualized by your care team.
- Know that atenolol can hide a racing heartbeat that normally signals low sugar, so watch for sweating, dizziness, shakiness, or confusion.
- If atenolol is ever stopped, tell your team, as your sugar control may shift.
Raise any lows or unexpected highs with your pharmacist or doctor.
Management is individual — confirm any change with your pharmacist or prescriber.
Literature reports
2 reports — tap to read
a) Among elderly diabetic patients receiving either insulin or sulfonylureas, the selection of antihypertensive medication had minimal impact on the risk of hypoglycemia; however, once other risk factors were accounted for, the lowest risk was observed with cardioselective beta blockers and the highest with non-cardioselective beta blockers, while other antihypertensive agents produced intermediate results (N=13,559) 5.
b) In patients with hypertension and non-insulin dependent diabetes, beta blockers, unlike alpha blockade and ACE inhibitors, produced a worsening of long-term glycemic control. Certain unfavorable effects on the lipid profile also occurred with beta blockade. These effects were particularly evident with propranolol. Using an alpha blocker together with the beta blocker prevented the worsening attributable to beta blockade 6.
Common questions
Can I take Dulaglutide and Atenolol together?
Atenolol can mask a fast heartbeat that warns of low blood sugar while dulaglutide lowers glucose, so watch for other low-sugar signs and let your care team monitor and adjust as needed. Always confirm with your pharmacist or prescriber before making any change.
How serious is the Dulaglutide and Atenolol interaction?
It is rated moderate. Can be significant — usually manageable with monitoring.
How quickly could this interaction happen?
The documented onset is "delayed". Effects tend to build up gradually over days to weeks.
How is the Dulaglutide and Atenolol interaction managed?
This combination is commonly used and manageable with a few precautions. Keep taking both exactly as prescribed unless your prescriber tells you otherwise. Your team may check your blood sugar more often, and your diabetes medicine dose may need to be adjusted and individualized by your care team. Know that atenolol can hide a racing heartbeat that normally signals low sugar, so watch for sweating… Management is individual — always follow your own care team's guidance.
How strong is the evidence for this interaction?
The evidence is graded "probable". Good supporting evidence, though not definitively proven.
Questions for your pharmacist
- Does my dose of Dulaglutide or Atenolol 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 (7)
- Product Information: TENORMIN(R) oral tablets, atenolol oral tablets. AstraZeneca Pharmaceuticals LP (per FDA), Wilmington, DE, 2012. DailyMed
- Product Information: TOUJEO(R) subcutaneous injection, insulin glargine subcutaneous injection. sanofi-aventis (per manufacturer), Bridgewater, NJ, 2015. DailyMed
- Product Information: AMARYL(R) oral tablets, glimepiride oral tablets. Sanofi-Aventis U.S. LLC (per FDA), Bridgewater, NJ, 2013. DailyMed
- Product Information: Glynase(R) PresTab(R) oral micronized tablets, glyburide oral micronized tablets. Pharmacia & Upjohn Co (per FDA), New York, NY, 2013. DailyMed
- Shorr RI, Ray WA, Daugherty JR, et al: Antihypertensives and the risk of serious hypoglycemia in older persons using insulin or sulfonylureas. JAMA 1997; 278:40-43. DOI
- Whitcroft IA, Thomas JM, Rawsthorne A, et al: Effects of alpha and beta adrenoceptor blocking drugs and ACE inhibitors on long term glucose and lipid control in hypertensive non-insulin dependent diabetics. Horm Metab Res Suppl 1990; 22:42-46.
- Product Information: COREG CR(R) extended-release oral capsules, carvedilol phosphate extended-release oral capsules. GlaxoSmithKline, Research Triangle Park, NC, 2011. DailyMed
Keep reading about Atenolol
Keep reading about Dulaglutide
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