Reported Reactions

Drugs › Anticholinergic

Generic name

Aclidinium bromide: adverse event reports filed with FDA

1,013 reports list it as a suspect or interacting product, 2012–2026. Class: Anticholinergic.

1,013
reports as suspect product
0% of all reports · about 74 a year
63
reports, 12 months to June 2026
65 in the 12 months before
98.6%
marked serious by the reporter
39.6% across the class
1.2%
record death among outcomes, as reported
12 reports · not verified by FDA

Between November 2012 and May 2026, 1,013 adverse event reports received by FDA list aclidinium bromide, a generic name as a suspect or interacting product. Reports that mention it only as a concomitant medication (852) are left out of every figure here.

In the 12 months to June 2026, 63 reports listed it, close to the 65 of 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 74 reports a year and 0% of the 20,646,523 reports in the database, and 0.6% of the reports for the anticholinergic class. How many people take it is not in the data, so a count is not a rate of occurrence.

Reporters most often recorded asthma (52%), wheezing (50.2%) and dyspnoea (49.2%). A report can list several reactions, so shares add to more than 100%; 442 different terms appear across these reports. Asthma is recorded in 52% of these reports, a larger share than in the median anticholinergic drug (1.6%).

98.6% of the reports are marked serious by the reporter (39.6% across the class); 1.2% record death among the outcomes and 45.7% record hospitalisation, as reported. 38.9% of the reports came from other health professionals, and the largest patient age group is 45 to 64 (29.4%). 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

01326Jul 2021: 11Aug 2021: 7Sep 2021: 17Oct 2021: 12Nov 2021: 11Dec 2021: 112022Jan 2022: 8Feb 2022: 9Mar 2022: 5Apr 2022: 12May 2022: 5Jun 2022: 9Jul 2022: 18Aug 2022: 7Sep 2022: 14Oct 2022: 7Nov 2022: 22Dec 2022: 262023Jan 2023: 9Feb 2023: 6Mar 2023: 13Apr 2023: 12May 2023: 7Jun 2023: 6Jul 2023: 5Aug 2023: 3Sep 2023: 24Oct 2023: 6Nov 2023: 17Dec 2023: 72024Jan 2024: 8Feb 2024: 12Mar 2024: 14Apr 2024: 12May 2024: 6Jun 2024: 12Jul 2024: 11Aug 2024: 12Sep 2024: 2Oct 2024: 7Nov 2024: 5Dec 2024: 32025Jan 2025: 2Feb 2025: 5Mar 2025: 9Apr 2025: 3May 2025: 2Jun 2025: 4Jul 2025: 9Aug 2025: 8Sep 2025: 6Oct 2025: 5Nov 2025: 7Dec 2025: 72026Jan 2026: 3Feb 2026: 8Mar 2026: 2Apr 2026: 6May 2026: 2Jun 2026: 0

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

01102202012: 420122013: 222014: 520142015: 32016: 1720162017: 162018: 4320182019: 842020: 15020202021: 2202022: 14220222023: 1152024: 10420242025: 672026: 212026

2026 covers reports received through June 2026 only.

Reactions recorded in the reports

share of Aclidinium bromide reports recording the termmedian drug in anticholinergic

  1. Asthmaasthma52%527
  2. Wheezingwheezing50.2%509
  3. Dyspnoeashortness of breath49.2%498
  4. Chronic obstructive pulmonary diseaseCOPD, a long-term lung disease32.3%327
  5. Pneumonialung infection24.1%244
  6. Productive cougha cough with phlegm22.1%224
  7. Condition aggravatedthe condition being treated got worse21.4%217
  8. Coughcough18.8%190
  9. Hypertensionhigh blood pressure18%182
  10. Oedema peripheralswelling of the legs, ankles or hands15.4%156
  11. Asthma-chronic obstructive pulmonary disease overlap syndrome13.9%141
  12. Nasal polyps13.8%140
  13. Drug ineffectivethe medicine did not work as expected13.4%136
  14. Rhinitis allergic13.4%136
  15. Sarcoidosis13.4%136
  16. Total lung capacity increased13.4%136
  17. Lung neoplasm malignantlung cancer12.8%130
  18. Breath sounds abnormal12.3%125
  19. Vomitingbeing sick12%122
  20. Off label useused for a purpose or in a way not on the label11.8%120

Top 30 of 442 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 24 drugs in the anticholinergic 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

Death1.2%12
Life-threatening1.4%14
Hospitalisation (initial or prolonged)45.7%463
Disability9.8%99
Congenital anomaly6.9%70
Other serious82%831
Not serious1.4%14

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 159,807 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%0
2 to 110%0
12 to 170%0
18 to 4413.1%133
45 to 6429.4%298
65 to 7412.4%126
75 and over23.5%238
Age not given21.5%218

Patient sex

Female56.8%575
Male32.6%330
Not given10.7%108

Who reported

Physician23.9%242
Pharmacist2.7%27
Other health professional38.9%394
Lawyer0%0
Consumer or non-health professional33.9%343
Not given0.7%7

Age and sex as stated in the report; the reporter's qualification is the primary source recorded by FDA. 4.9% of reports give the United States as the country of the event or reporter.

Reason for use recorded

Indication as recorded (MedDRA)ReportsShare
Asthma13213%
Chronic obstructive pulmonary disease12612.4%
Bronchitis60.6%
Ill-defined disorder20.2%
Sleep apnoea syndrome20.2%

The indication field is filled in by the reporter and is often blank; shares are of all 1,013 reports.

Drugs most often listed in the same reports

Drug (any role in the report)ReportsShare of Aclidinium bromide reports
Prednisone48948.3%
Albuterol sulfate41140.6%
Nucala33332.9%
Albuterol32732.3%
Singulair31130.7%
Tiotropium bromide28428%
Mepolizumab24023.7%
Symbicort23823.5%
Azithromycin22922.6%
Zenhale22522.2%

Other products listed in reports where Aclidinium bromide 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

MeasureAclidinium bromideAnticholinergicAll reports
Reports as suspect product1,013159,80720,646,523
Share of that pool—0.6%0%
Reports, latest 12 months63—1,332,454
Marked serious98.6%39.6%57.4%
Death recorded among outcomes, per 1,000 reports126391
Hospitalisation recorded, per 1,000 reports457202213
Consumer-filed share33.9%70.6%45.8%
Top term, share of reportsAsthma 52%median 1.6%0.5%

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 anticholinergic class

DrugName typeReportsLatest 12 monthsMarked serious
Tiotropium bromidegeneric76,91761632.3%
Trelegy Elliptabrand26,7952,47235.1%
Anoro Elliptabrand12,55434626.3%
Ipratropium bromidegeneric8,31040080.2%
Spiriva Respimatbrand5,58124649.3%
Incruse Elliptabrand4,57512936.1%
Tudorza Pressairbrand3,858832.1%
Stiolto Respimatbrand2,89917225.2%
Atropinegeneric2,38616095.7%
Glycopyrrolategeneric2,22525892.3%
Transderm Scopbrand1,4981543%
Benztropinegeneric1,49216794.2%
Bevespi Aerospherebrand1,4676235.6%
Scopolaminegeneric1,26012568.6%
Atropine sulfategeneric1,1684784.7%

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 Aclidinium bromide reports

How many adverse event reports has FDA received for Aclidinium bromide?

1,013 reports list Aclidinium bromide as a suspect or interacting product in the openFDA FAERS release of 28 Sep 2026, covering reports received through June 2026. 63 of them arrived in the latest 12 months. Another 852 list it only as a concomitant medication.

What reactions are recorded in Aclidinium bromide reports?

asthma (52%), wheezing (50.2%), dyspnoea (49.2%), chronic obstructive pulmonary disease (32.3%) and therapeutic product effect incomplete (30.6%). 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 Aclidinium bromide was responsible.

How serious are the reports?

98.6% are marked serious by the reporter. Among the outcomes recorded, 1.2% of reports include death and 45.7% 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 (38.9%), consumer or non-health professional (33.9%) and physician (23.9%). Most reports reach FDA through the manufacturer, which must forward reports it receives.

Are reports for Aclidinium bromide rising?

63 reports in the 12 months to June 2026, close to the 65 of 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 Aclidinium bromide 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 Aclidinium bromide?

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 Aclidinium bromide as a suspect or interacting product; reports listing it only as a concomitant medication (852) 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.