Reported Reactions

Drugs › Angiotensin 2 receptor blocker

Brand name · Candesartan cilexetil

Atacand: adverse event reports filed with FDA

4,597 reports list it as a suspect or interacting product, 2004–2026. Class: Angiotensin 2 receptor blocker. Also reported as Atacand /01349502/.

4,597
reports as suspect product
0% of all reports · about 204 a year
48
reports, 12 months to June 2026
75 in the 12 months before
76.6%
marked serious by the reporter
67.6% across the class
5.8%
record death among outcomes, as reported
266 reports · not verified by FDA

Between January 2004 and June 2026, 4,597 adverse event reports received by FDA list the brand name Atacand (candesartan cilexetil) as a suspect or interacting product. Reports that mention it only as a concomitant medication (9,141) are left out of every figure here.

In the 12 months to June 2026, 48 reports listed it, down 36% from 75 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 204 reports a year and 0% of the 20,646,523 reports in the database, and 1.9% of the reports for the angiotensin 2 receptor blocker class. How many people take it is not in the data, so a count is not a rate of occurrence.

The reactions recorded most often are blood pressure increased (11.2%), drug ineffective (9.9%) and malaise (8.6%). A report can list several reactions, so shares add to more than 100%; 857 different terms appear across these reports. Blood pressure increased is recorded in 11.2% of these reports, a larger share than in the median angiotensin 2 receptor blocker drug (5.3%).

76.6% of the reports are marked serious by the reporter (67.6% across the class); 5.8% record death among the outcomes and 44.3% record hospitalisation, as reported. 44.3% of the reports came from consumers, and the largest patient age group is 45 to 64 (26.6%). 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

0816Jul 2021: 2Aug 2021: 4Sep 2021: 6Oct 2021: 15Nov 2021: 11Dec 2021: 42022Jan 2022: 6Feb 2022: 8Mar 2022: 4Apr 2022: 6May 2022: 10Jun 2022: 7Jul 2022: 4Aug 2022: 8Sep 2022: 10Oct 2022: 5Nov 2022: 3Dec 2022: 92023Jan 2023: 5Feb 2023: 0Mar 2023: 3Apr 2023: 5May 2023: 4Jun 2023: 6Jul 2023: 4Aug 2023: 3Sep 2023: 1Oct 2023: 1Nov 2023: 1Dec 2023: 22024Jan 2024: 2Feb 2024: 3Mar 2024: 3Apr 2024: 16May 2024: 7Jun 2024: 5Jul 2024: 9Aug 2024: 10Sep 2024: 8Oct 2024: 7Nov 2024: 4Dec 2024: 32025Jan 2025: 5Feb 2025: 8Mar 2025: 15Apr 2025: 1May 2025: 4Jun 2025: 1Jul 2025: 3Aug 2025: 6Sep 2025: 1Oct 2025: 0Nov 2025: 6Dec 2025: 22026Jan 2026: 5Feb 2026: 11Mar 2026: 8Apr 2026: 3May 2026: 0Jun 2026: 3

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

04278542004: 7520042005: 1042006: 1172007: 23720072008: 2292009: 2702010: 31620102011: 6032012: 8542013: 33020132014: 2492015: 1792016: 14520162017: 1202018: 1552019: 13220192020: 1122021: 962022: 8020222023: 352024: 772025: 5220252026: 30

2026 covers reports received through June 2026 only.

Reactions recorded in the reports

share of Atacand reports recording the termmedian drug in angiotensin 2 receptor blocker

  1. Blood pressure increaseda raised blood pressure reading11.2%517
  2. Drug ineffectivethe medicine did not work as expected9.9%456
  3. Malaisegeneral feeling of being unwell8.6%397
  4. Hypertensionhigh blood pressure8.3%383
  5. Headachehead pain7.8%360
  6. Fatiguetiredness7.2%332
  7. Dizzinesslight-headedness or unsteadiness6.6%304
  8. Nauseafeeling sick6.5%298
  9. Falla fall6.4%292
  10. Coughcough5.6%258
  11. Astheniaweakness or lack of energy5.6%257
  12. Hypotensionlow blood pressure5.5%255
  13. Palpitationsawareness of the heartbeat4.8%221
  14. Vomitingbeing sick4.4%204
  15. Drug dose omissiona dose was missed4.3%199
  16. Cataractclouding of the eye lens4.3%196
  17. Confusional stateconfusion4.2%191
  18. Painpain, site not specified4.1%188
  19. Pneumonialung infection4%184
  20. Dyspnoeashortness of breath4%182
  21. Sinusitissinus infection4%182
  22. Anxietyanxiety3.9%180
  23. Arthritis3.9%180
  24. Chest discomfortchest discomfort3.9%178
  25. Drug interactionan interaction between medicines3.8%174
  26. Off label useused for a purpose or in a way not on the label3.7%171
  27. Rheumatoid arthritisrheumatoid arthritis, an inflammatory joint disease3.7%168

Top 30 of 857 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 angiotensin 2 receptor 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

Death5.8%266
Life-threatening6.7%309
Hospitalisation (initial or prolonged)44.3%2,038
Disability4.5%208
Congenital anomaly0.8%39
Other serious39.2%1,801
Not serious23.4%1,077

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 243,200 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 20.4%19
2 to 110.2%7
12 to 170.1%3
18 to 444%184
45 to 6426.6%1,224
65 to 7422.2%1,021
75 and over26.4%1,213
Age not given20.1%926

Patient sex

Female61.4%2,822
Male35.7%1,639
Not given3%136

Who reported

Physician22.3%1,023
Pharmacist3.9%181
Other health professional16.2%745
Lawyer0.2%7
Consumer or non-health professional44.3%2,038
Not given13.1%603

Age and sex as stated in the report; the reporter's qualification is the primary source recorded by FDA. 35.6% of reports give the United States as the country of the event or reporter.

Reason for use recorded

Indication as recorded (MedDRA)ReportsShare
Hypertension1,80639.3%
Essential hypertension1312.8%
Blood pressure abnormal1122.4%
Cardiac failure571.2%
Blood pressure270.6%
Cardiac disorder120.3%

The indication field is filled in by the reporter and is often blank; shares are of all 4,597 reports.

Drugs most often listed in the same reports

Drug (any role in the report)ReportsShare of Atacand reports
Aspirin47310.3%
Crestor3587.8%
Nexium3247%
Hydrochlorothiazide2826.1%
Lisinopril2234.9%
Lantus2204.8%
Acetaminophen2134.6%
Prednisone2084.5%
Lyrica2024.4%
Synthroid2014.4%

Other products listed in reports where Atacand 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

MeasureAtacandAngiotensin 2 receptor blockerAll reports
Reports as suspect product4,597243,20020,646,523
Share of that pool—1.9%0%
Reports, latest 12 months48—1,332,454
Marked serious76.6%67.6%57.4%
Death recorded among outcomes, per 1,000 reports5811191
Hospitalisation recorded, per 1,000 reports443287213
Consumer-filed share44.3%54.2%45.8%
Top term, share of reportsBlood pressure increased 11.2%median 5.3%0.7%

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 angiotensin 2 receptor blocker class

DrugName typeReportsLatest 12 monthsMarked serious
Entrestobrand105,1731,28549.3%
Diovanbrand17,17913391.7%
Valsartangeneric16,93592383.8%
Losartangeneric15,1761,13780.1%
Candesartangeneric10,1971,48798.6%
Irbesartangeneric10,05569293.7%
Benicarbrand8,3707969.4%
Losartan potassiumgeneric6,72524673%
Exforgebrand6,26610895.3%
Diovan HCTbrand5,6703095.3%
Filsparibrand5,5982,90816.1%
Candesartan cilexetilgeneric5,31162297.6%
Cozaarbrand4,9136070.2%
Olmesartan medoxomilgeneric4,77716990.6%
Telmisartangeneric4,66635791.2%

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 Atacand reports

How many adverse event reports has FDA received for Atacand?

4,597 reports list Atacand as a suspect or interacting product in the openFDA FAERS release of 28 Sep 2026, covering reports received through June 2026. 48 of them arrived in the latest 12 months. Another 9,141 list it only as a concomitant medication.

What reactions are recorded in Atacand reports?

blood pressure increased (11.2%), drug ineffective (9.9%), malaise (8.6%), hypertension (8.3%) and headache (7.8%). 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 Atacand was responsible.

How serious are the reports?

76.6% are marked serious by the reporter. Among the outcomes recorded, 5.8% of reports include death and 44.3% 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 (44.3%), physician (22.3%) and other health professional (16.2%). Most reports reach FDA through the manufacturer, which must forward reports it receives.

Are reports for Atacand rising?

48 reports in the 12 months to June 2026, down 36% from 75 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 Atacand 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 Atacand?

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 Atacand as a suspect or interacting product; reports listing it only as a concomitant medication (9,141) 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.