Reported Reactions

Drugs › beta-Adrenergic blocker

Generic name

Atenolol: adverse event reports filed with FDA

17,022 reports list it as a suspect or interacting product, 2004–2026. Class: beta-Adrenergic blocker. Also reported as Atenolol Tablets Usp, Atenolol Tablets, Atenolol Tablet.

17,022
reports as suspect product
0.1% of all reports · about 757 a year
444
reports, 12 months to June 2026
512 in the 12 months before
84.9%
marked serious by the reporter
78.7% across the class
15%
record death among outcomes, as reported
2,557 reports · not verified by FDA

Between January 2004 and June 2026, 17,022 adverse event reports received by FDA list atenolol, a generic name as a suspect or interacting product. Reports that mention it only as a concomitant medication (106,724) are left out of every figure here.

In the 12 months to June 2026, 444 reports listed it, down 13% from 512 in the 12 months before. FDA releases FAERS data quarterly, so the newest months are incomplete and grow in later releases. Over its reporting history that is about 757 reports a year and 0.1% of the 20,646,523 reports in the database, and 11.5% of the reports for the beta-Adrenergic blocker class. How many people take it is not in the data, so a count is not a rate of occurrence.

Reporters most often recorded hypotension (9.1%), bradycardia (8.8%) and completed suicide (8.6%). A report can list several reactions, so shares add to more than 100%; 2,002 different terms appear across these reports. Hypotension is recorded in 9.1% of these reports, a larger share than in the median beta-Adrenergic blocker drug (5.5%).

84.9% of the reports are marked serious by the reporter (78.7% across the class); 15% record death among the outcomes and 41.7% record hospitalisation, as reported. 28% of the reports came from other health professionals, and the largest patient age group is 45 to 64 (28.4%). FDA states that "a causal relationship cannot be established between product and reactions listed in a report" and that for any given report "there is no certainty that a suspected drug caused the event."

Reports by month, five years

056111Jul 2021: 62Aug 2021: 44Sep 2021: 58Oct 2021: 72Nov 2021: 78Dec 2021: 822022Jan 2022: 68Feb 2022: 79Mar 2022: 86Apr 2022: 63May 2022: 41Jun 2022: 111Jul 2022: 51Aug 2022: 42Sep 2022: 40Oct 2022: 57Nov 2022: 48Dec 2022: 552023Jan 2023: 52Feb 2023: 73Mar 2023: 52Apr 2023: 54May 2023: 63Jun 2023: 42Jul 2023: 40Aug 2023: 39Sep 2023: 35Oct 2023: 68Nov 2023: 42Dec 2023: 622024Jan 2024: 73Feb 2024: 47Mar 2024: 49Apr 2024: 60May 2024: 47Jun 2024: 26Jul 2024: 42Aug 2024: 46Sep 2024: 29Oct 2024: 17Nov 2024: 22Dec 2024: 592025Jan 2025: 59Feb 2025: 75Mar 2025: 61Apr 2025: 42May 2025: 28Jun 2025: 32Jul 2025: 30Aug 2025: 30Sep 2025: 22Oct 2025: 28Nov 2025: 22Dec 2025: 372026Jan 2026: 40Feb 2026: 49Mar 2026: 46Apr 2026: 46May 2026: 41Jun 2026: 53

Reports by the month FDA received them. FDA releases FAERS data quarterly, so the newest months are incomplete and grow in later releases.

By year received

07171,4342004: 25020042005: 3832006: 3712007: 31520072008: 4882009: 4092010: 58020102011: 7982012: 9372013: 1,00120132014: 1,1212015: 1,1302016: 90920162017: 1,0842018: 1,4342019: 1,24820192020: 1,0922021: 8512022: 74120222023: 6222024: 5172025: 46620252026: 275

2026 covers reports received through June 2026 only.

Reactions recorded in the reports

share of Atenolol reports recording the termmedian drug in beta-adrenergic blocker

  1. Hypotensionlow blood pressure9.1%1,557
  2. Bradycardiaslow heart rate8.8%1,499
  3. Completed suicidedeath by suicide8.6%1,458
  4. Drug ineffectivethe medicine did not work as expected8.5%1,447
  5. Dyspnoeashortness of breath5.9%999
  6. Toxicity to various agentspoisoning or toxic effect of one or more substances5.6%958
  7. Dizzinesslight-headedness or unsteadiness5.4%925
  8. Nauseafeeling sick5.1%873
  9. Drug interactionan interaction between medicines5.1%867
  10. Fatiguetiredness4.8%816
  11. Falla fall4.5%773
  12. Headachehead pain4.4%741
  13. Malaisegeneral feeling of being unwell4.3%732
  14. Hypertensionhigh blood pressure4.2%714
  15. Blood pressure increaseda raised blood pressure reading4.1%699
  16. Off label useused for a purpose or in a way not on the label4.1%696
  17. Astheniaweakness or lack of energy3.8%653
  18. Syncopefainting3.7%630
  19. Diarrhoealoose or frequent stools3.5%601
  20. Drug hypersensitivityan allergic-type reaction to a medicine3.4%574
  21. Overdosea dose above the recommended amount3.2%543
  22. Painpain, site not specified3.2%538
  23. Arthralgiajoint pain3%519
  24. Coughcough2.6%442
  25. Chest painchest pain2.5%430
  26. Vomitingbeing sick2.5%427
  27. Weight decreasedweight loss2.4%410
  28. Rashskin rash2.4%406
  29. Pain in extremitypain in an arm or leg2.3%386

Top 30 of 2,002 MedDRA preferred terms recorded across these reports, with a plain-language gloss where one is available. One report can record several terms. The hollow bar is the median share across the 22 drugs in the beta-adrenergic blocker class; it describes the reports, not the patients. FDA states that adverse event reports "represent a small percentage of total usage numbers of a product", that "common products may have a higher number of adverse events due to the higher total number of people using the product", and that the data "by themselves are not an indicator of the safety profile of the drug or biologic."

Outcomes recorded

Death15%2,557
Life-threatening7.3%1,236
Hospitalisation (initial or prolonged)41.7%7,099
Disability3%516
Congenital anomaly0.5%79
Other serious46.3%7,878
Not serious15.1%2,567

Outcome flags as the reporter set them; a report can carry several, and "other serious" is FDA's own category for serious reports outside the named outcomes. Grey bar: all 148,208 reports in the class. FDA has not verified any outcome and states that the reports "cannot be used to estimate the incidence of these events."

Patients and reporters

Patient age

Under 20.5%90
2 to 110.6%106
12 to 170.7%122
18 to 448.4%1,437
45 to 6428.4%4,834
65 to 7417.7%3,019
75 and over19.8%3,372
Age not given23.7%4,042

Patient sex

Female52.2%8,881
Male38.9%6,619
Not given8.9%1,522

Who reported

Physician26.6%4,520
Pharmacist11.2%1,906
Other health professional28%4,760
Lawyer0.1%19
Consumer or non-health professional25.7%4,377
Not given8.5%1,440

Age and sex as stated in the report; the reporter's qualification is the primary source recorded by FDA. 44.6% of reports give the United States as the country of the event or reporter.

Reason for use recorded

Indication as recorded (MedDRA)ReportsShare
Hypertension4,33125.4%
Blood pressure abnormal3301.9%
Atrial fibrillation3031.8%
Arrhythmia1610.9%
Blood pressure1420.8%
Suicide attempt1370.8%

The indication field is filled in by the reporter and is often blank; shares are of all 17,022 reports.

Drugs most often listed in the same reports

Drug (any role in the report)ReportsShare of Atenolol reports
Amlodipine1,95311.5%
Aspirin1,69610%
Furosemide1,0666.3%
Lisinopril1,0366.1%
Metformin9795.8%
Simvastatin9755.7%
Hydrochlorothiazide8855.2%
Atorvastatin8485%
Omeprazole8194.8%
Ramipril7464.4%

Other products listed in reports where Atenolol is a suspect product, whatever their own role. Co-listing means the two were recorded together; it says nothing about either product's part in the event. Only the 2,500 most-reported names are counted here.

In context

MeasureAtenololbeta-Adrenergic blockerAll reports
Reports as suspect product17,022148,20820,646,523
Share of that pool—11.5%0.1%
Reports, latest 12 months444—1,332,454
Marked serious84.9%78.7%57.4%
Death recorded among outcomes, per 1,000 reports15013191
Hospitalisation recorded, per 1,000 reports417387213
Consumer-filed share25.7%26.8%45.8%
Top term, share of reportsHypotension 9.1%median 5.5%1%

Shares are of reports, not of patients treated. The number of people taking a product is not in the data, so none of these figures is a rate, and differences between columns reflect who takes a product, who reports and how long it has been sold. FDA states that adverse event reports "represent a small percentage of total usage numbers of a product", that "common products may have a higher number of adverse events due to the higher total number of people using the product", and that the data "by themselves are not an indicator of the safety profile of the drug or biologic."

Other drugs in the beta-adrenergic blocker class

DrugName typeReportsLatest 12 monthsMarked serious
Metoprololgeneric27,4101,52088.2%
Bisoprololbrand22,8811,45499.1%
Propranololgeneric13,7331,17787.1%
Metoprolol succinategeneric10,41666465.4%
Metoprolol tartrategeneric9,10355772.4%
Bisoprolol fumarategeneric8,29254698.2%
Propranolol hydrochloridegeneric6,10248471.9%
Timololgeneric4,8189720.7%
Hemangeolbrand4,3834415.4%
Nebivololgeneric4,21138693.9%
Toprol Xlbrand3,3413544.5%
Labetalolgeneric2,96019288.7%
Bystolicbrand2,8412131.1%
Timolol maleategeneric2,74312029.9%
Tenorminbrand1,7861480.2%

Ordered by report count for navigation only. FDA states that adverse event reports "represent a small percentage of total usage numbers of a product", that "common products may have a higher number of adverse events due to the higher total number of people using the product", and that the data "by themselves are not an indicator of the safety profile of the drug or biologic." A brand and its generic are separate rows because reporters name them separately.

Questions about Atenolol reports

How many adverse event reports has FDA received for Atenolol?

17,022 reports list Atenolol as a suspect or interacting product in the openFDA FAERS release of 28 Sep 2026, covering reports received through June 2026. 444 of them arrived in the latest 12 months. Another 106,724 list it only as a concomitant medication.

What reactions are recorded in Atenolol reports?

hypotension (9.1%), bradycardia (8.8%), completed suicide (8.6%), drug ineffective (8.5%) and dyspnoea (5.9%). These are MedDRA preferred terms coded from what the reporter described; a report can list several, and a term's presence is not a finding that Atenolol was responsible.

How serious are the reports?

84.9% are marked serious by the reporter. Among the outcomes recorded, 15% of reports include death and 41.7% include hospitalisation. FDA has not verified these outcomes and states that the reports "cannot be used to estimate the incidence" of the events.

Who files these reports?

other health professional (28%), physician (26.6%) and consumer or non-health professional (25.7%). Most reports reach FDA through the manufacturer, which must forward reports it receives.

Are reports for Atenolol rising?

444 reports in the 12 months to June 2026, down 13% from 512 in the 12 months before. FDA releases FAERS data quarterly, so the newest months are incomplete and grow in later releases. Counts also move with how many people take a product, its time on the market and publicity.

Do these reports show that Atenolol was responsible for these reactions?

No. FDA states that "a causal relationship cannot be established between product and reactions listed in a report" and that for any given report "there is no certainty that a suspected drug caused the event." The reaction may relate to the condition being treated, to other medicines, or to something else.

Is this a list of the side effects of Atenolol?

No. It is a count of what was reported to FDA. The adverse reactions observed in clinical studies are printed on the FDA-approved label, which a pharmacist or clinician can go through with you.

How do I report an adverse event?

Consumers and health professionals can report to FDA through MedWatch (Form FDA 3500 online, or 1-800-FDA-1088), or to the manufacturer, which must pass reports on. See the guide on how to report.

Where this comes from. Counts are built from the openFDA Drug Adverse Event (FAERS) bulk export released 28 Sep 2026, which holds reports FDA received through 30 Jun 2026. Drug names are as reported, resolved to the brand or generic name on the FDA label where openFDA's harmonisation matched them; classes are the pharmacologic class (EPC) from the label and the National Drug Code Directory of 17 Sep 2026. A report counts here when it lists Atenolol as a suspect or interacting product; reports listing it only as a concomitant medication (106,724) are excluded. No report narrative, lot number, patient detail or reporter identity is published. See the methodology and sources; FDA's record is authoritative, and corrections are handled within five working days.

Drug data (FAERS) through 30 Jun 2026; device data (MAUDE) through 31 Aug 2026. Not medical advice.