Atenolol Does NOT Cause Cough—Switch to Any Cardioselective Beta-Blocker
Beta-blockers, including atenolol, do not cause cough; this is a side effect specific to ACE inhibitors, not beta-blockers. If your patient is experiencing cough while on atenolol, you need to look for other causes—most commonly an ACE inhibitor they may be taking concurrently, or other typical causes of chronic cough (postnasal drip, asthma, GERD).
Key Evidence
The provided guidelines clearly distinguish between drug classes that cause cough:
ACE inhibitors cause cough in 5-35% of patients through bradykinin and substance P accumulation 1. This is a well-established class effect.
Beta-blockers can cause bronchospasm (not cough) in patients with reactive airway disease, but this is mechanistically and clinically distinct from the dry, tickling cough caused by ACE inhibitors 2.
The 2017 ACC/AHA guidelines 3 list cardioselective beta-blockers including atenolol, betaxolol, bisoprolol, and metoprolol without any mention of cough as a side effect.
Clinical Approach
If your patient has cough while on atenolol:
- Check for concurrent ACE inhibitor use (lisinopril, enalapril, ramipril, etc.)—this is the most likely culprit
- Evaluate for common causes of chronic cough: upper airway cough syndrome, cough-variant asthma, eosinophilic bronchitis, GERD 1
- Consider other medications: The evidence notes that various drugs can cause cough including inhaled medications, nitrofurantoin, mycophenolate, and even omeprazole 2, 4
If Beta-Blocker Change Is Needed for Other Reasons
Among cardioselective beta-blockers, all have similar safety profiles regarding respiratory effects 3:
- Bisoprolol (2.5-10 mg once daily)—preferred in heart failure with reduced ejection fraction
- Metoprolol succinate (50-200 mg once daily)—also preferred in HFrEF
- Nebivolol (5-40 mg once daily)—has vasodilatory properties through nitric oxide
- Betaxolol (5-20 mg once daily)
For patients with bronchospastic disease requiring a beta-blocker, cardioselective agents (beta-1 selective) are strongly preferred over non-selective agents 3, 5. Studies show that atenolol causes significantly less bronchospasm than propranolol while maintaining cardiac selectivity 6, 7, 8. Recent evidence demonstrates that cardioselective beta-blockers are safe in COPD patients and may even reduce exacerbations 5, 9.
Critical Pitfall to Avoid
Do not attribute cough to atenolol without thoroughly investigating ACE inhibitor use. ACE inhibitor-induced cough can occur hours to months after starting therapy, and resolution takes 1-4 weeks (occasionally up to 3 months) after discontinuation 1. The temporal relationship may be misleading if atenolol was started more recently than an ACE inhibitor.
If an ACE inhibitor is the cause, switch to an ARB (losartan, valsartan, etc.)—these have cough rates similar to placebo and do not cause the bradykinin-mediated cough seen with ACE inhibitors 1.