Reported Reactions

Drugs › alpha-Adrenergic agonist

Brand name · Brimonidine tartrate, timolol maleate

Combigan: adverse event reports filed with FDA

2,940 reports list it as a suspect or interacting product, 2007–2026. Class: alpha-Adrenergic agonist.

2,940
reports as suspect product
0% of all reports · about 151 a year
49
reports, 12 months to June 2026
65 in the 12 months before
23.1%
marked serious by the reporter
50.8% across the class
0.7%
record death among outcomes, as reported
20 reports · not verified by FDA

Between February 2007 and June 2026, 2,940 adverse event reports received by FDA list the brand name Combigan (brimonidine tartrate, timolol maleate) as a suspect or interacting product. Reports that mention it only as a concomitant medication (3,686) are left out of every figure here.

In the 12 months to June 2026, 49 reports listed it, down 25% from 65 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 151 reports a year and 0% of the 20,646,523 reports in the database, and 12.6% of the reports for the alpha-Adrenergic agonist class. How many people take it is not in the data, so a count is not a rate of occurrence.

The MedDRA terms listed most often are ocular hyperaemia (13.9%), eye irritation (13.3%) and eye pain (8.3%). A report can list several reactions, so shares add to more than 100%; 343 different terms appear across these reports. Ocular hyperaemia is recorded in 13.9% of these reports, a larger share than in the median alpha-Adrenergic agonist drug (0.2%).

23.1% of the reports are marked serious by the reporter (50.8% across the class); 0.7% record death among the outcomes and 5.6% record hospitalisation, as reported. 74.9% of the reports came from consumers, and the largest patient age group is 75 and over (20.4%). 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

067134Jul 2021: 7Aug 2021: 1Sep 2021: 1Oct 2021: 3Nov 2021: 134Dec 2021: 12022Jan 2022: 1Feb 2022: 1Mar 2022: 8Apr 2022: 6May 2022: 5Jun 2022: 4Jul 2022: 3Aug 2022: 3Sep 2022: 6Oct 2022: 62Nov 2022: 1Dec 2022: 12023Jan 2023: 2Feb 2023: 2Mar 2023: 20Apr 2023: 2May 2023: 5Jun 2023: 13Jul 2023: 2Aug 2023: 9Sep 2023: 8Oct 2023: 6Nov 2023: 7Dec 2023: 72024Jan 2024: 4Feb 2024: 4Mar 2024: 10Apr 2024: 5May 2024: 9Jun 2024: 6Jul 2024: 3Aug 2024: 9Sep 2024: 6Oct 2024: 3Nov 2024: 9Dec 2024: 62025Jan 2025: 1Feb 2025: 4Mar 2025: 7Apr 2025: 6May 2025: 6Jun 2025: 5Jul 2025: 9Aug 2025: 2Sep 2025: 7Oct 2025: 1Nov 2025: 6Dec 2025: 42026Jan 2026: 0Feb 2026: 4Mar 2026: 7Apr 2026: 4May 2026: 1Jun 2026: 4

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

02074142007: 1120072008: 282009: 30620092010: 1482011: 16120112012: 402013: 3720132014: 322015: 22220152016: 4142017: 31220172018: 2762019: 23220192020: 2082021: 17720212022: 1012023: 8320232024: 742025: 5820252026: 20

2026 covers reports received through June 2026 only.

Reactions recorded in the reports

share of Combigan reports recording the termmedian drug in alpha-adrenergic agonist

  1. Ocular hyperaemiaa red eye13.9%410
  2. Eye irritationeye irritation13.3%392
  3. Eye paineye pain8.3%243
  4. Intraocular pressure increasedraised pressure in the eye6.9%204
  5. Vision blurredblurred vision6.1%179
  6. Dizzinesslight-headedness or unsteadiness5.9%172
  7. Drug ineffectivethe medicine did not work as expected5.1%149
  8. Hypersensitivityan allergic-type reaction4.2%123
  9. Fatiguetiredness4.1%122
  10. Lacrimation increasedwatery eyes3.7%108
  11. Eye swellinga swollen eye3.6%105
  12. Product storage errorthe product was stored wrongly3.5%104
  13. Headachehead pain3.4%101
  14. Incorrect dose administeredthe wrong dose was given3.4%101
  15. Off label useused for a purpose or in a way not on the label3.3%97
  16. Visual impairmentreduced vision3.2%94
  17. Dry mouthdry mouth3%87
  18. Dry eyedry eye2.9%84
  19. Somnolencedrowsiness2.7%79
  20. Product container issuea problem with the container2.6%77
  21. Cataractclouding of the eye lens2.4%70
  22. Dyspnoeashortness of breath2.3%68
  23. Drug hypersensitivityan allergic-type reaction to a medicine2.2%66
  24. Astheniaweakness or lack of energy2.1%62
  25. Inappropriate schedule of drug administrationthe medicine was taken at the wrong times2%59
  26. Product delivery mechanism issue2%59

Top 30 of 343 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 11 drugs in the alpha-adrenergic agonist 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

Death0.7%20
Life-threatening0.8%23
Hospitalisation (initial or prolonged)5.6%165
Disability1.6%46
Congenital anomaly0.1%3
Other serious17.6%517
Not serious76.9%2,262

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 23,291 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 20.2%7
2 to 110%1
12 to 170%1
18 to 441.2%35
45 to 6410%293
65 to 7410.9%321
75 and over20.4%601
Age not given57.2%1,681

Patient sex

Female58.6%1,723
Male34.4%1,010
Not given7%207

Who reported

Physician14%413
Pharmacist3.6%106
Other health professional5.6%166
Lawyer0%0
Consumer or non-health professional74.9%2,202
Not given1.8%53

Age and sex as stated in the report; the reporter's qualification is the primary source recorded by FDA. 90.6% of reports give the United States as the country of the event or reporter.

Reason for use recorded

Indication as recorded (MedDRA)ReportsShare
Glaucoma1,34945.9%
Intraocular pressure increased31610.7%
Intraocular pressure test561.9%
Open angle glaucoma281%
Intraocular pressure test abnormal200.7%
Macular degeneration60.2%

The indication field is filled in by the reporter and is often blank; shares are of all 2,940 reports.

Drugs most often listed in the same reports

Drug (any role in the report)ReportsShare of Combigan reports
Lumigan47816.3%
Latanoprost1856.3%
Travatan1294.4%
Xalatan1163.9%
Azopt1153.9%
Aspirin772.6%
Alphagan P752.6%
Lisinopril702.4%
Amlodipine561.9%
Dorzolamide561.9%

Other products listed in reports where Combigan 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

MeasureCombiganalpha-Adrenergic agonistAll reports
Reports as suspect product2,94023,29120,646,523
Share of that pool—12.6%0%
Reports, latest 12 months49—1,332,454
Marked serious23.1%50.8%57.4%
Death recorded among outcomes, per 1,000 reports715691
Hospitalisation recorded, per 1,000 reports56199213
Consumer-filed share74.9%48.1%45.8%
Top term, share of reportsOcular hyperaemia 13.9%median 0.2%0.2%

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 alpha-adrenergic agonist class

DrugName typeReportsLatest 12 monthsMarked serious
Pseudoephedrine hydrochloridegeneric8,3811,16390.4%
Brimonidinegeneric4,28512217.7%
Alphagan Pbrand2,65611031.9%
Brimonidine tartrategeneric1,01217842.2%
Mirvasobrand926221%
Claritin-Dbrand7321622.5%
Alavertbrand618031.6%
Loratadine and pseudoephedrine sulfategeneric6162210.2%
Midodrine hydrochloridegeneric5955170.1%
Pseudoephedrine hclgeneric530094.7%

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 Combigan reports

How many adverse event reports has FDA received for Combigan?

2,940 reports list Combigan as a suspect or interacting product in the openFDA FAERS release of 28 Sep 2026, covering reports received through June 2026. 49 of them arrived in the latest 12 months. Another 3,686 list it only as a concomitant medication.

What reactions are recorded in Combigan reports?

ocular hyperaemia (13.9%), eye irritation (13.3%), eye pain (8.3%), intraocular pressure increased (6.9%) and eye pruritus (6.9%). 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 Combigan was responsible.

How serious are the reports?

23.1% are marked serious by the reporter. Among the outcomes recorded, 0.7% of reports include death and 5.6% 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?

consumer or non-health professional (74.9%), physician (14%) and other health professional (5.6%). Most reports reach FDA through the manufacturer, which must forward reports it receives.

Are reports for Combigan rising?

49 reports in the 12 months to June 2026, down 25% from 65 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 Combigan 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 Combigan?

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 Combigan as a suspect or interacting product; reports listing it only as a concomitant medication (3,686) 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.