Reported Reactions

Drugs › Bradykinin B2 receptor antagonist

Generic name

Icatibant: adverse event reports filed with FDA

1,945 reports list it as a suspect or interacting product, 2012–2026. Class: Bradykinin B2 receptor antagonist.

1,945
reports as suspect product
0% of all reports · about 137 a year
143
reports, 12 months to June 2026
196 in the 12 months before
87.3%
marked serious by the reporter
75.3% across the class
5.9%
record death among outcomes, as reported
114 reports · not verified by FDA

1,945 adverse event reports received by FDA list icatibant, a generic name as a suspect or interacting product, from May 2012 to June 2026. A further 857 reports list it only as a concomitant medication, and those are not counted in the figures on this page.

In the 12 months to June 2026, 143 reports listed it, down 27% from 196 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 137 reports a year and 0% of the 20,646,523 reports in the database, and 34.6% of the reports for the bradykinin B2 receptor antagonist 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 hereditary angioedema (33.5%), weight increased (11.8%) and weight decreased (11%). A report can list several reactions, so shares add to more than 100%; 647 different terms appear across these reports. Hereditary angioedema is recorded in 33.5% of these reports, about the same share as in the median bradykinin B2 receptor antagonist drug (33.5%).

87.3% of the reports are marked serious by the reporter (75.3% across the class); 5.9% record death among the outcomes and 52.8% record hospitalisation, as reported. 54% of the reports came from consumers, and the largest patient age group is 18 to 44 (27.4%). 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

04487Jul 2021: 29Aug 2021: 18Sep 2021: 25Oct 2021: 19Nov 2021: 42Dec 2021: 322022Jan 2022: 22Feb 2022: 21Mar 2022: 20Apr 2022: 25May 2022: 15Jun 2022: 20Jul 2022: 48Aug 2022: 78Sep 2022: 87Oct 2022: 20Nov 2022: 15Dec 2022: 182023Jan 2023: 26Feb 2023: 25Mar 2023: 22Apr 2023: 17May 2023: 17Jun 2023: 33Jul 2023: 13Aug 2023: 15Sep 2023: 24Oct 2023: 27Nov 2023: 23Dec 2023: 262024Jan 2024: 24Feb 2024: 25Mar 2024: 31Apr 2024: 36May 2024: 33Jun 2024: 13Jul 2024: 16Aug 2024: 25Sep 2024: 17Oct 2024: 24Nov 2024: 11Dec 2024: 102025Jan 2025: 16Feb 2025: 13Mar 2025: 13Apr 2025: 23May 2025: 13Jun 2025: 15Jul 2025: 14Aug 2025: 25Sep 2025: 14Oct 2025: 9Nov 2025: 11Dec 2025: 72026Jan 2026: 11Feb 2026: 14Mar 2026: 11Apr 2026: 15May 2026: 4Jun 2026: 8

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

02354692012: 220122013: 92014: 720142015: 92016: 620162017: 82018: 3620182019: 532020: 18820202021: 4692022: 38920222023: 2682024: 26520242025: 1732026: 632026

2026 covers reports received through June 2026 only.

Reactions recorded in the reports

share of Icatibant reports recording the termmedian drug in bradykinin b2 receptor antagonist

  1. Weight increasedweight gain11.8%229
  2. Weight decreasedweight loss11%213
  3. Drug ineffectivethe medicine did not work as expected9.9%193
  4. Product use issuea problem in how the product was used9.5%184
  5. Malaisegeneral feeling of being unwell8.8%172
  6. Headachehead pain8.3%162
  7. Product dose omission issuea dose was missed7.8%152
  8. Inappropriate schedule of product administrationthe product was taken at the wrong times7.4%143
  9. Covid-19COVID-19 infection7.1%138
  10. Stressstress6.9%135
  11. Painpain, site not specified6.7%131
  12. Product availability issuethe product was not available6.4%125
  13. Injection site painpain where the injection was given6.3%123
  14. Nauseafeeling sick5.8%112
  15. Off label useused for a purpose or in a way not on the label5.7%111
  16. Influenzaflu5.7%110
  17. Falla fall5.4%105
  18. Vomitingbeing sick5.2%102
  19. Diarrhoealoose or frequent stools5.1%99
  20. Fatiguetiredness4.9%96
  21. Angioedemadeep swelling of skin or mucous membranes4.8%93
  22. Treatment noncompliancethe treatment was not taken as directed4.8%93
  23. Dizzinesslight-headedness or unsteadiness4.7%92
  24. Abdominal painstomach or belly pain4.7%91
  25. Dyspnoeashortness of breath4.4%85
  26. Anxietyanxiety4%78
  27. Astheniaweakness or lack of energy3.9%75

Top 30 of 647 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 3 drugs in the bradykinin b2 receptor antagonist 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

Death5.9%114
Life-threatening6.3%122
Hospitalisation (initial or prolonged)52.8%1,027
Disability1.1%22
Congenital anomaly0.3%6
Other serious60.1%1,168
Not serious12.7%247

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 5,620 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 20.3%6
2 to 111.4%27
12 to 171.7%34
18 to 4427.4%533
45 to 6424.4%475
65 to 747.8%152
75 and over7.3%142
Age not given29.6%576

Patient sex

Female69.3%1,348
Male25.9%504
Not given4.8%93

Who reported

Physician21.8%424
Pharmacist1.3%26
Other health professional14.9%290
Lawyer0%0
Consumer or non-health professional54%1,050
Not given8%155

Age and sex as stated in the report; the reporter's qualification is the primary source recorded by FDA. 41.5% of reports give the United States as the country of the event or reporter.

Reason for use recorded

Indication as recorded (MedDRA)ReportsShare
Hereditary angioedema1,05754.3%
Immune system disorder26313.5%
Complement deficiency disease723.7%
Angioedema683.5%
Hereditary angioedema with c1 esterase inhibitor deficiency452.3%
Complement factor abnormal311.6%

The indication field is filled in by the reporter and is often blank; shares are of all 1,945 reports.

Drugs most often listed in the same reports

Drug (any role in the report)ReportsShare of Icatibant reports
Takhzyro44622.9%
Berinert1658.5%
Epinephrine1316.7%
Tranexamic acid1015.2%
Haegarda975%
Lanadelumab884.5%
Sodium chloride623.2%
Ergocalciferol532.7%
Omeprazole452.3%
Prednisone442.3%

Other products listed in reports where Icatibant 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

MeasureIcatibantBradykinin B2 receptor antagonistAll reports
Reports as suspect product1,9455,62020,646,523
Share of that pool—34.6%0%
Reports, latest 12 months143—1,332,454
Marked serious87.3%75.3%57.4%
Death recorded among outcomes, per 1,000 reports594491
Hospitalisation recorded, per 1,000 reports528467213
Consumer-filed share54%50.4%45.8%
Top term, share of reportsHereditary angioedema 33.5%median 33.5%0.1%

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 bradykinin b2 receptor antagonist class

DrugName typeReportsLatest 12 monthsMarked serious
Firazyrbrand3,0259570%
Icatibant acetategeneric65020063.8%

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 Icatibant reports

How many adverse event reports has FDA received for Icatibant?

1,945 reports list Icatibant as a suspect or interacting product in the openFDA FAERS release of 28 Sep 2026, covering reports received through June 2026. 143 of them arrived in the latest 12 months. Another 857 list it only as a concomitant medication.

What reactions are recorded in Icatibant reports?

hereditary angioedema (33.5%), weight increased (11.8%), weight decreased (11%), drug ineffective (9.9%) and product use issue (9.5%). 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 Icatibant was responsible.

How serious are the reports?

87.3% are marked serious by the reporter. Among the outcomes recorded, 5.9% of reports include death and 52.8% 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 (54%), physician (21.8%) and other health professional (14.9%). Most reports reach FDA through the manufacturer, which must forward reports it receives.

Are reports for Icatibant rising?

143 reports in the 12 months to June 2026, down 27% from 196 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 Icatibant 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 Icatibant?

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 Icatibant as a suspect or interacting product; reports listing it only as a concomitant medication (857) 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.