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Candesartan side effects: what 35,463 FDA adverse event reports show

Candesartan · 1,246 reaction terms · 289,029 drug–reaction co-reports · data 2026-09-14
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Drug class

Not stated in label

Who reports

35,463 reports · 96% serious · 4,872 with death outcome · 57% female

openFDA FAERS counts, all years, deduplication not applied

Used for

Candesartan cilexetil tablets are an angiotensin II receptor blocker (ARB) indicated for: · Treatment of hypertension in adults and children 1 to < 17 years of age, to lower blood pressure. Lowering blood pressure reduces the risk of fatal and non-fatal cardiovascular events, primarily strokes and myocardial infarctions ( 1.1 ).

FDA label, Indications and Usage

What it is

Candesartan cilexetil, USP a prodrug, is hydrolyzed to candesartan during absorption from the gastrointestinal tract. Candesartan is a selective AT 1 subtype angiotensin II receptor antagonist.

FDA label, Description section

Boxed warning

FETAL TOXICITY When pregnancy is detected, discontinue candesartan cilexetil tablets as soon as possible. [see Warnings and Precautions ( 5.1 ) and Use in Specific Populations ( 8.1 )] Drugs that act directly on the .

FDA label
How to read this page. FAERS is a spontaneous-reporting system: counts are not incidence rates and a signal is not proof of causation. Each reaction below is run through an automated screen — is the term in the FDA label (known), in the indications (the disease being treated), an administrative/coding term, or none of these (unlabeled)? That screen is mechanical text matching, not a causality assessment. The 30 hand-written Bradford Hill assessments are on the causality assessment page. Not medical advice.

Causality screen of the 40 strongest signals

Likely indication confounding 1Reporting / coding artifact 1Lab value / disease marker 6Not in label — unassessed 32
What the badges mean

Strongest disproportionality signals

Flagged terms (PRR ≥ 2, χ² ≥ 4, n ≥ 10), ranked by PRR; infinite PRRs (no comparator reports) excluded. The EBGM column is a second, shrinkage-based estimate (MGPS) with its 5th percentile EB05 and the BCPNN IC025; a pair flagged by PRR alone is marked PRR-only and should be read as fragile. The strata column recomputes the PRR on serious reports only (and, for the 300 most-reported drugs, adjusted for age band), and flags pairs whose reports are unusually skewed by sex or come mostly from consumers. Each row also shows the PRR against the other drugs of the same FDA class, which removes most confounding by the condition being treated, and a calibrated p-value: on validation, known non-causes average an ROR of about 2, so significance is judged against that empirical null (✓ = p < 0.05 after calibration). 1,206 further terms are in the interactive explorer. Reaction links open the term's cross-drug page.

Show:
ReactionReportsPRR 95% CI · ROR · χ²/pEBGM EB05 · IC025Label screenSerious-only & strataTrial cross-check
Hepatic enzyme79779.9
556.8–1,092.6ROR 781.7 · calibrated p 2e-15 ✓
309.0 EB05 255.9 · IC025 +6.4
3/3 methods agree
Not in label — unassessedserious n=79 · ♀ 100% (drug 57%) · 100% cliniciannot reported in cached trials
Cardiospasm275580.4
491.3–685.6ROR 584.9 · calibrated p 2e-14 ✓
285.4 EB05 258.2 · IC025 +7.4
3/3 methods agree
Likely indication confounding
shares a disease stem with the indications wording
serious n=275not reported in cached trials
Hypocholesterolaemia131441.1
351.6–553.3ROR 442.7 · calibrated p 4e-13 ✓
242.6 EB05 209.6 · IC025 +6.7
3/3 methods agree
Not in label — unassessedserious n=131 · ♀ 100% (drug 57%) · 100% cliniciannot reported in cached trials
Immunisation176406.8
335.7–493.1ROR 408.8 · calibrated p 7e-13 ✓
233.9 EB05 206.3 · IC025 +6.9
3/3 methods agree
Not in label — unassessedserious n=176not reported in cached trials
Palmoplantar keratoderma267350.3
301.1–407.5ROR 352.9 · calibrated p 3e-12 ✓
215.7 EB05 194.9 · IC025 +7.1
3/3 methods agree
Not in label — unassessedserious n=267not reported in cached trials
Pulmonary vasculitis181309.2
258.3–370.1ROR 310.8 · calibrated p 1e-11 ✓
198.1 EB05 175.0 · IC025 +6.8
3/3 methods agree
Not in label — unassessedserious n=181 · ♀ 0% (drug 57%)not reported in cached trials
Total lung capacity abnormal118266.4
214.3–331.2ROR 267.3 · calibrated p 5e-11 ✓
177.9 EB05 152.5 · IC025 +6.4
3/3 methods agree
Not in label — unassessedserious n=118 · ♀ 0% (drug 57%)not reported in cached trials
Facet joint syndrome869225.7
208.8–243.9ROR 231.3 · calibrated p 1e-10 ✓
162.4 EB05 153.5 · IC025 +7.1
3/3 methods agree
Not in label — unassessedserious n=869 · ♀ 100% (drug 57%) · 93% cliniciannot reported in cached trials
Capillaritis65189.3
143.1–250.4ROR 189.7 · calibrated p 1e-9 ✓
137.4 EB05 111.6 · IC025 +5.7
3/3 methods agree
Not in label — unassessedserious n=65 · ♀ 0% (drug 57%)not reported in cached trials
Neovascularisation59177.1
132.4–237.0ROR 177.4 · calibrated p 2e-9 ✓
130.4 EB05 104.8 · IC025 +5.6
3/3 methods agree
Not in label — unassessedserious n=59 · ♀ 100% (drug 57%) · 100% cliniciannot reported in cached trials
Neurologic neglect syndrome118158.0
129.0–193.6ROR 158.5 · calibrated p 4e-9 ✓
122.1 EB05 104.7 · IC025 +6.1
3/3 methods agree
Not in label — unassessedserious n=118 · ♀ 100% (drug 57%) · 100% cliniciannot reported in cached trials
Spirometry abnormal120152.0
124.3–185.7ROR 152.5 · calibrated p 6e-9 ✓
118.5 EB05 101.7 · IC025 +6.0
3/3 methods agree
Lab value / disease markerserious n=120 · ♀ 0% (drug 57%)not reported in cached trials
Peripheral venous disease782144.1
133.4–155.8ROR 147.4 · calibrated p 5e-9 ✓
115.4 EB05 108.8 · IC025 +6.6
3/3 methods agree
Not in label — unassessedserious n=782 · ♀ 98% (drug 57%) · 92% cliniciannot reported in cached trials
Cardiac output increased33141.3
96.6–206.7ROR 141.5 · calibrated p 2e-8 ✓
107.0 EB05 79.7 · IC025 +4.8
3/3 methods agree
Lab value / disease markerserious n=33 · ♀ 100% (drug 57%) · 100% cliniciannot reported in cached trials
Blood lactic acid decreased33139.3
95.3–203.6ROR 139.4 · calibrated p 3e-8 ✓
105.9 EB05 78.9 · IC025 +4.8
3/3 methods agree
Lab value / disease markerserious n=33 · ♀ 100% (drug 57%) · 100% cliniciannot reported in cached trials
Malignant melanoma stage 032126.8
86.5–185.8ROR 126.9 · calibrated p 5e-8 ✓
98.3 EB05 72.9 · IC025 +4.7
3/3 methods agree
Not in label — unassessedserious n=32 · ♀ 0% (drug 57%) · 100% cliniciannot reported in cached trials
Congenital hiatus hernia39126.2
89.3–178.4ROR 126.3 · calibrated p 5e-8 ✓
99.0 EB05 75.6 · IC025 +5.0
3/3 methods agree
Not in label — unassessedserious n=39 · ♀ 0% (drug 57%) · 100% cliniciannot reported in cached trials
Mite allergy108120.5
98.0–148.2ROR 120.9 · calibrated p 4e-8 ✓
98.3 EB05 83.7 · IC025 +5.8
3/3 methods agree
Not in label — unassessedserious n=108 · ♀ 0% (drug 57%)not reported in cached trials
Steroid dependence139115.7
96.4–138.7ROR 116.1 · calibrated p 5e-8 ✓
95.4 EB05 82.8 · IC025 +5.9
3/3 methods agree
Not in label — unassessedserious n=139 · ♀ 21% (drug 57%) · 92% cliniciannot reported in cached trials
Onychomadesis666112.9
104.0–122.6ROR 115.1 · calibrated p 4e-8 ✓
94.5 EB05 88.6 · IC025 +6.3
3/3 methods agree
Not in label — unassessedserious n=666 · ♀ 100% (drug 57%) · 93% cliniciannot reported in cached trials
Catarrh132103.1
85.7–124.0ROR 103.4 · calibrated p 1e-7 ✓
86.7 EB05 74.9 · IC025 +5.8
3/3 methods agree
Not in label — unassessedserious n=132 · ♀ 24% (drug 57%) · 91% cliniciannot reported in cached trials
Blepharospasm907101.2
94.4–108.6ROR 103.9 · calibrated p 9e-8 ✓
86.3 EB05 81.6 · IC025 +6.3
3/3 methods agree
Not in label — unassessedserious n=907 · ♀ 100% (drug 57%) · 93% cliniciannot reported in cached trials
Breast cancer stage iii92298.9
92.3–106.0ROR 101.5 · calibrated p 1e-7 ✓
84.6 EB05 80.1 · IC025 +6.2
3/3 methods agree
Not in label — unassessedserious n=922 · ♀ 100% (drug 57%) · 94% cliniciannot reported in cached trials
Bronchopulmonary aspergillosis allergic12996.8
80.4–116.6ROR 97.2 · calibrated p 2e-7 ✓
82.2 EB05 71.0 · IC025 +5.7
3/3 methods agree
Not in label — unassessedserious n=129not reported in cached trials
Antineutrophil cytoplasmic antibody positive10296.3
78.1–118.7ROR 96.6 · calibrated p 2e-7 ✓
81.6 EB05 69.1 · IC025 +5.6
3/3 methods agree
Lab value / disease markerserious n=102 · ♀ 0% (drug 57%)not reported in cached trials
Vitamin b1 decreased3596.2
67.3–137.5ROR 96.3 · calibrated p 3e-7 ✓
79.2 EB05 59.6 · IC025 +4.7
3/3 methods agree
Lab value / disease markerserious n=34 · ♀ 100% (drug 57%) · 100% cliniciannot reported in cached trials
Rheumatic fever58090.5
83.0–98.7ROR 92.0 · calibrated p 2e-7 ✓
78.3 EB05 73.1 · IC025 +6.1
3/3 methods agree
Not in label — unassessedserious n=580 · ♀ 100% (drug 57%) · 92% cliniciannot reported in cached trials
Carotid artery thrombosis11390.2
74.0–109.9ROR 90.5 · calibrated p 3e-7 ✓
77.2 EB05 66.0 · IC025 +5.6
3/3 methods agree
Not in label — unassessedserious n=113 · ♀ 100% (drug 57%) · 100% cliniciannot reported in cached trials
Atrial tachycardia27990.1
79.5–102.2ROR 90.8 · calibrated p 3e-7 ✓
77.8 EB05 70.4 · IC025 +5.9
3/3 methods agree
Not in label — unassessedserious n=279not reported in cached trials
Mycotic allergy11189.7
73.5–109.5ROR 90.0 · calibrated p 3e-7 ✓
76.9 EB05 65.6 · IC025 +5.5
3/3 methods agree
Not in label — unassessedserious n=111 · ♀ 0% (drug 57%)not reported in cached trials
Product monitoring error18889.2
76.5–103.9ROR 89.6 · calibrated p 3e-7 ✓
76.9 EB05 68.1 · IC025 +5.8
3/3 methods agree
Reporting / coding artifactserious n=188 · 90% cliniciannot reported in cached trials
Anti-cyclic citrullinated peptide antibody positive89785.4
79.7–91.5ROR 87.6 · calibrated p 3e-7 ✓
74.5 EB05 70.5 · IC025 +6.1
3/3 methods agree
Lab value / disease markerserious PRR 44.7 · ♀ 100% (drug 57%) · 92% cliniciannot reported in cached trials
Overlap syndrome8583.1
66.2–104.2ROR 83.3 · calibrated p 6e-7 ✓
71.7 EB05 59.8 · IC025 +5.3
3/3 methods agree
Not in label — unassessedserious n=85 · ♀ 100% (drug 57%)not reported in cached trials
Duodenal ulcer perforation89181.7
76.2–87.5ROR 83.7 · calibrated p 4e-7 ✓
71.6 EB05 67.8 · IC025 +6.0
3/3 methods agree
Not in label — unassessedserious PRR 42.8 · ♀ 100% (drug 57%) · 93% cliniciannot reported in cached trials
Therapeutic drug monitoring analysis not performed3681.3
57.4–115.2ROR 81.4 · calibrated p 1e-6 ✓
68.9 EB05 52.0 · IC025 +4.6
3/3 methods agree
Not in label — unassessedserious n=36 · ♀ 100% (drug 57%) · 100% cliniciannot reported in cached trials
Pruritus genital27679.5
70.1–90.1ROR 80.1 · calibrated p 6e-7 ✓
69.7 EB05 63.1 · IC025 +5.8
3/3 methods agree
Not in label — unassessedserious n=276not reported in cached trials
Lupus vulgaris14179.4
66.6–94.7ROR 79.7 · calibrated p 7e-7 ✓
69.4 EB05 60.3 · IC025 +5.5
3/3 methods agree
Not in label — unassessedserious n=141 · ♀ 100% (drug 57%) · 93% cliniciannot reported in cached trials
Dust allergy10975.3
61.7–91.9ROR 75.5 · calibrated p 1e-6 ✓
66.1 EB05 56.3 · IC025 +5.4
3/3 methods agree
Not in label — unassessedserious n=109 · ♀ 0% (drug 57%)not reported in cached trials
Neuritis17073.4
62.6–86.1ROR 73.8 · calibrated p 1e-6 ✓
64.8 EB05 57.1 · IC025 +5.5
3/3 methods agree
Not in label — unassessedserious n=170 · ♀ 0% (drug 57%)not reported in cached trials
Onychomycosis45268.0
61.7–74.9ROR 68.9 · calibrated p 2e-6 ✓
60.9 EB05 56.3 · IC025 +5.7
3/3 methods agree
Not in label — unassessedserious n=452 · ♀ 100% (drug 57%) · 94% cliniciannot reported in cached trials

Clinical concept groups

MedDRA splits one clinical problem across several terms (e.g. "neutropenia", "neutrophil count decreased", "agranulocytosis"), which dilutes term-level signals. These rows count reports with any term in a concept group (an exact union, not a sum), compared with all other drugs. Groups are hand-built and listed in the methods.

ConceptReportsPRR 95% CIReading
Hyponatraemia7705.75.3–6.1signal
Interstitial lung disease8525.34.9–5.7signal
Liver injury2,2134.44.2–4.5signal
Arrhythmia / qt1,3574.24.0–4.4signal
Kidney injury3,0203.93.8–4.1signal
Hyperglycaemia / diabetes2,0843.63.4–3.7signal
Depression1,5733.33.2–3.5signal
Rhabdomyolysis / myopathy4463.33.0–3.6signal
Gi bleeding9623.12.9–3.3signal
Fall / fracture1,9463.02.9–3.2signal
Anaemia1,5013.02.8–3.1signal
Anaphylaxis / angioedema6172.92.7–3.2signal
Tendon disorder1852.92.5–3.3signal
Serious infection3,2002.52.4–2.5signal
Heart failure7232.42.2–2.6signal
Myocardial infarction8082.32.2–2.5signal

Trial evidence (ClinicalTrials.gov)

✓ Trial adverse-event data found on ClinicalTrials.gov

Largest completed trials with posted results that list Candesartan as a study intervention. The right-hand column of the signal table shows whether each FAERS term was also recorded in these trials, with a real denominator (0 of 40 signal terms matched).

Caveats: trial populations, doses and follow-up differ from the reporting population; AE terms are sponsor-coded and matched here by wording; absence from a trial list means the term was not reported above the sponsor's frequency threshold, not that it cannot occur.

Most frequently reported reactions

By raw co-report count, regardless of disproportionality. Common terms here are often the illness itself or generic outcomes.

ReactionReportsPRR 95% CI · ROR · χ²/pEBGM EB05 · IC025Label screenSerious-only & strataTrial cross-check
Off label use (used outside approved label)3,7702.6
2.5–2.7ROR 2.8 · calibrated p 0.708
2.6 EB05 2.5 · IC025 +1.3
3/3 methods agree
Reporting / coding artifactage-adj. PRR 2.3 · serious PRR 2.8not reported in cached trials
Fatigue (tiredness)3,4012.6
2.5–2.7ROR 2.8 · calibrated p 0.708
2.6 EB05 2.5 · IC025 +1.3
3/3 methods agree
Not in label — unassessedage-adj. PRR 2.4 · serious PRR 2.9not reported in cached trials
Dyspnoea (shortness of breath)3,3593.5
3.4–3.6ROR 3.8 · calibrated p 0.419
3.5 EB05 3.4 · IC025 +1.8
3/3 methods agree
Not in label — unassessedage-adj. PRR 2.9 · serious PRR 2.9NCT02166697: 1/13,804 (0.0%) on Candesartan
Nausea3,1892.4
2.3–2.5ROR 2.5 · calibrated p 0.799
2.4 EB05 2.3 · IC025 +1.2
3/3 methods agree
Not in label — unassessedage-adj. PRR 2.2 · serious PRR 2.7NCT02166697: 1/13,804 (0.0%) on Candesartan (serious AE)
Diarrhoea (diarrhea)3,0282.8
2.7–2.9ROR 3.0 · calibrated p 0.640
2.8 EB05 2.7 · IC025 +1.4
3/3 methods agree
Labeled — boxed warning
exact term
age-adj. PRR 2.3 · serious PRR 2.9NCT02166697: 1/13,804 (0.0%) on Candesartan
Dizziness2,9293.5
3.4–3.6ROR 3.7 · calibrated p 0.434
3.5 EB05 3.4 · IC025 +1.7
3/3 methods agree
Labeled adverse reaction
exact term
age-adj. PRR 3.0 · serious PRR 3.6NCT02211638: 41/17,130 (0.2%) on Candesartan
Headache2,7592.6
2.5–2.7ROR 2.7 · calibrated p 0.714
2.6 EB05 2.5 · IC025 +1.3
3/3 methods agree
Labeled adverse reaction
exact term
age-adj. PRR 2.6 · serious PRR 3.2NCT02166697: 9/13,804 (0.1%) on Candesartan
Pain2,6742.6
2.5–2.7ROR 2.7 · calibrated p 0.730
2.6 EB05 2.5 · IC025 +1.3
3/3 methods agree
Labeled adverse reaction
exact term
age-adj. PRR 2.8 · serious PRR 2.4NCT02211638: 1/17,130 (0.0%) on Candesartan (serious AE)
Drug ineffective (drug did not work)2,5721.2
1.1–1.2ROR 1.2 · calibrated p 0.418
1.2 EB05 1.1 · IC025 +0.1Reporting / coding artifactage-adj. PRR 1.5 · serious PRR 1.9not reported in cached trials
Vomiting2,4853.1
3.0–3.3ROR 3.3 · calibrated p 0.535
3.1 EB05 3.0 · IC025 +1.6
3/3 methods agree
Labeled — boxed warning
exact term
age-adj. PRR 2.9 · serious PRR 2.8 · ♀ 79% (drug 57%)NCT02211638: 1/17,130 (0.0%) on Candesartan (serious AE)
Arthralgia (joint pain)2,3893.4
3.3–3.6ROR 3.6 · calibrated p 0.461
3.4 EB05 3.3 · IC025 +1.7
3/3 methods agree
Not in label — unassessedage-adj. PRR 3.1 · serious PRR 3.7not reported in cached trials
General physical health deterioration2,38912.5
12.1–13.0ROR 13.4 · calibrated p 0.011 ✓
12.3 EB05 11.9 · IC025 +3.5
3/3 methods agree
Reporting / coding artifactage-adj. PRR 10.6 · serious PRR 8.6 · 91% cliniciannot reported in cached trials
Asthenia (weakness)2,2113.5
3.4–3.6ROR 3.7 · calibrated p 0.448
3.5 EB05 3.4 · IC025 +1.7
3/3 methods agree
Not in label — unassessedage-adj. PRR 2.7 · serious PRR 2.9NCT02166697: 1/13,804 (0.0%) on Candesartan
Hypertension (high blood pressure)2,1536.1
5.8–6.3ROR 6.4 · calibrated p 0.127
6.0 EB05 5.8 · IC025 +2.5
3/3 methods agree
Labeled — boxed warning
exact term
age-adj. PRR 5.0 · serious PRR 4.4NCT02166697: 1/13,804 (0.0%) on Candesartan (serious AE)
Malaise (feeling unwell)2,1372.9
2.8–3.0ROR 3.0 · calibrated p 0.625
2.9 EB05 2.8 · IC025 +1.5
3/3 methods agree
Not in label — unassessedage-adj. PRR 2.7 · serious PRR 2.9 · ♀ 78% (drug 57%)NCT02166697: 1/13,804 (0.0%) on Candesartan

Unlabeled candidate signals

These flagged terms were not found in the FDA label text and do not match an artifact pattern. They are the pairs that would merit a structured assessment (temporality, dose-response, biological plausibility, consistency across databases, trial or cohort evidence). The screen has not done that; string-matching misses label wording, and a strong PRR can still be stimulated reporting, co-medication, or the disease itself.

Want to assess one of these properly? The runbook describes the Bradford Hill / trial-evidence workflow used on the assessment page, and handoff_top1000_signals.csv lists the strongest unassessed pairs across all drugs.

Common questions

What are the most reported side effects of Candesartan?

In FDA FAERS, the most frequently co-reported reaction terms for Candesartan are fatigue, dyspnoea, nausea, diarrhoea, dizziness, headache. These are report counts, not rates: FAERS has no denominator, reporting is voluntary and uneven, and a term can be reported because of the illness being treated rather than the drug.

Does Candesartan have an FDA boxed warning?

Yes. The current FDA label carries a boxed warning: FETAL TOXICITY When pregnancy is detected, discontinue candesartan cilexetil tablets as soon as possible. [see Warnings and Precautions ( 5.1 ) and Use in Specific Populations ( 8.1 )] Drugs that act directly on the .

Do FAERS signals prove that Candesartan causes these side effects?

No. A disproportionality signal (PRR, ROR) means a reaction is reported more often with this drug than with others in the database. That can reflect a real effect, but also the disease being treated, stimulated reporting after news or litigation, co-medications, or how reports are coded. Causality needs temporality, dose-response, biological plausibility, consistency across data sources and, ideally, trial or cohort evidence. This page screens each term against the FDA label and ClinicalTrials.gov results; it does not establish causation.

Sources & methods

Page generated 2026-10-14. Label and PubChem text are retrieved automatically and may lag the current label; always check the current prescribing information. OpenPV is a beta research tool of the Open Source Medicine Foundation.