Levalbuterol 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
Levalbuterol
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.
These two medicines pull in opposite directions. Levalbuterol (Xopenex) is a rescue-type inhaler that opens up your airways by switching on beta receptors in your lungs. Atenolol (Tenormin) is a beta blocker, which does the reverse. It blocks some of those same receptors. So atenolol can make your inhaler work less well when you need it to help you breathe.
There is also a concern that beta blockers can tighten the airways in people with asthma. The good news is your care team can manage this. Please don't stop either drug on your own. Talk with your pharmacist or doctor, especially if you notice your inhaler isn't working as well as usual.
Pharmacodynamic antagonism. Atenolol (beta-1 selective antagonist) opposes the beta-2 agonist effect of levalbuterol at the receptor level, potentially reducing bronchodilator efficacy. Neither drug is a prodrug; this is a PD, not PK, interaction.
- Direction: reduced levalbuterol effect (bronchodilation).
- Risk: beta blockers may also precipitate bronchospasm in asthma; nonselective agents worse, but selectivity is dose-dependent and diminishes at higher atenolol doses.
- Evidence: theoretical; severity rated major.
- Management: beta blockers generally avoided in asthma; if required, prefer a cardioselective agent with caution and monitor respiratory status/peak flow and blood pressure.
What happens
Reduced efficacy of levalbuterol
Interaction Deep Dive
Because levalbuterol is a beta-2 agonist, taking it together with a beta-adrenergic receptor antagonist (beta blocker) can undermine levalbuterol's effectiveness through pharmacological antagonism. Beta blockers may also trigger severe bronchospasm in asthmatic patients. For these reasons, beta blockers are generally advised against in patients who have asthma. When their combined use cannot be avoided or no suitable alternatives exist, a cardioselective beta blocker should be considered and used cautiously12.
Why it happens (mechanism)
Pharmacological antagonism
How to manage this interaction
Keep taking both exactly as prescribed unless your prescriber tells you otherwise. This combination is usually approached carefully because a beta blocker can blunt how well your inhaler opens your airways.
- Your care team may choose a cardioselective beta blocker (atenolol is one) and use it cautiously, or consider an alternative for your heart or blood pressure.
- They may monitor your breathing more closely, especially if you have asthma.
- Tell your pharmacist or doctor if your inhaler seems less effective, or if you notice more wheezing, cough, or shortness of breath.
The dose and choice of medicine can be adjusted and individualized by your team to keep both conditions well controlled.
Management is individual — confirm any change with your pharmacist or prescriber.
Common questions
Can I take Levalbuterol and Atenolol together?
Atenolol can reduce how well your levalbuterol inhaler works and, in asthma, may worsen breathing, so let your doctor or pharmacist manage this combination and speak up if your inhaler feels less effective. Always confirm with your pharmacist or prescriber before making any change.
How serious is the Levalbuterol and Atenolol interaction?
It is rated major. Potentially serious — often needs a change or close monitoring.
How quickly could this interaction happen?
The documented onset is "unspecified". The timing of this interaction is not well characterized.
How is the Levalbuterol and Atenolol interaction managed?
Keep taking both exactly as prescribed unless your prescriber tells you otherwise. This combination is usually approached carefully because a beta blocker can blunt how well your inhaler opens your airways. Your care team may choose a cardioselective beta blocker (atenolol is one) and use it cautiously, or consider an alternative for your heart or blood pressure. They may monitor your breathing mo… 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 Levalbuterol 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 a safer alternative to one of these medications for me?
References (2)
- Product Information: XOPENEX(R) inhalation solution, levalbuterol HCl inhalation solution. Akorn Inc (per FDA), Lake Forest, IL, 2019. DailyMed
- Product Information: XOPENEX HFA(R) oral inhalation aerosol, levalbuterol tartrate oral inhalation aerosol. Sunovion Pharmaceuticals Inc (per FDA), Marlborough, MA, 2017. DailyMed
Keep reading about Atenolol
Keep reading about Levalbuterol
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