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Adalimumab side effects: what 703,389 FDA adverse event reports show

Adalimumab · Humira · 1,298 reaction terms · 2,730,152 drug–reaction co-reports · data 2026-09-14
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Drug class

Tumor necrosis factor (tnf) blocker

FDA label, Indications wording

Brand names

Humira

openFDA label

Who reports

703,389 reports · 51% serious · 30,045 with death outcome · 68% female

openFDA FAERS counts, all years, deduplication not applied

Used for

Adalimumab is a tumor necrosis factor (TNF) blocker indicated for: Reducing signs and symptoms, inducing major clinical response, inhibiting the progression of structural damage, and improving physical function in adult patients with moderately to severely active rheumatoid arthritis .

FDA label, Indications and Usage

What it is

Adalimumab is a tumor necrosis factor blocker. Adalimumab is a recombinant human IgG1 monoclonal antibody created using phage display technology resulting in an antibody with human derived heavy and light chain variable regions and human IgG1:k constant regions.

FDA label, Description section

Boxed warning

WARNING: SERIOUS INFECTIONS AND MALIGNANCY SERIOUS INFECTIONS Patients treated with HUMIRA are at increased risk for developing serious infections that may lead to hospitalization or death [see Warnings and Precautions ( 5.1 )] . Most patients who developed these infections were taking concomitant immunosuppressants such as methotrexate or corticosteroids.

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

Labeled adverse reaction 1Labeled (related wording) 6Likely indication confounding 2Reporting / coding artifact 2Lab value / disease marker 9Not in label — unassessed 20
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). 1,258 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
Anti-cyclic citrullinated peptide antibody positive5,985165.1
154.6–176.4ROR 166.5 · calibrated p 2e-9 ✓
25.1 EB05 24.6 · IC025 +4.6
3/3 methods agree
Lab value / disease markerserious PRR 28.4 · ♀ 100% (drug 68%) · 92% cliniciannot reported in cached trials
Anti-cyclic citrullinated peptide antibody547138.8
113.3–170.1ROR 138.9 · calibrated p 1e-8 ✓
24.4 EB05 22.7 · IC025 +4.4
3/3 methods agree
Lab value / disease markerserious n=546 · ♀ 100% (drug 68%) · 100% cliniciannot reported in cached trials
Rheumatoid factor positive4,659127.8
119.5–136.7ROR 128.6 · calibrated p 2e-8 ✓
24.1 EB05 23.5 · IC025 +4.5
3/3 methods agree
Lab value / disease markerserious n=4,650 · ♀ 98% (drug 68%) · 91% cliniciannot reported in cached trials
Swollen joint count increased2,409102.2
93.8–111.3ROR 102.5 · calibrated p 1e-7 ✓
23.0 EB05 22.3 · IC025 +4.5
3/3 methods agree
Lab value / disease markerserious n=2,408 · ♀ 100% (drug 68%) · 100% cliniciannot reported in cached trials
Lupus vulgaris88887.9
77.0–100.4ROR 88.0 · calibrated p 3e-7 ✓
22.2 EB05 21.0 · IC025 +4.3
3/3 methods agree
Not in label — unassessedserious n=888 · ♀ 100% (drug 68%) · 100% cliniciannot reported in cached trials
Pemphigus9,24086.7
83.2–90.3ROR 87.8 · calibrated p 3e-7 ✓
22.2 EB05 21.8 · IC025 +4.4
3/3 methods agree
Not in label — unassessedserious PRR 25.1 · ♀ 100% (drug 68%)not reported in cached trials
Rheumatic fever3,22083.8
78.2–89.7ROR 84.2 · calibrated p 4e-7 ✓
22.0 EB05 21.3 · IC025 +4.4
3/3 methods agree
Likely indication confounding
shares a disease stem with the indications wording
serious n=3,217 · ♀ 100% (drug 68%) · 94% cliniciannot reported in cached trials
Deep vein thrombosis postoperative1,42879.9
72.2–88.4ROR 80.0 · calibrated p 6e-7 ✓
21.7 EB05 20.8 · IC025 +4.3
3/3 methods agree
Not in label — unassessedserious n=1,428 · ♀ 100% (drug 68%) · 100% cliniciannot reported in cached trials
Cartilage atrophy57069.2
59.5–80.6ROR 69.3 · calibrated p 2e-6 ✓
20.8 EB05 19.4 · IC025 +4.2
3/3 methods agree
Not in label — unassessedserious n=556 · 100% consumernot reported in cached trials
C-reactive protein61562.2
54.0–71.6ROR 62.2 · calibrated p 4e-6 ✓
20.2 EB05 18.9 · IC025 +4.2
3/3 methods agree
Lab value / disease markerserious n=614 · ♀ 100% (drug 68%) · 100% clinicianNCT01076959: 2/7,740 (0.0%) on Adalimumab (serious AE)
C-reactive protein abnormal4,33461.9
58.7–65.3ROR 62.3 · calibrated p 3e-6 ✓
20.2 EB05 19.7 · IC025 +4.3
3/3 methods agree
Lab value / disease markerserious n=4,317NCT01076959: 2/7,740 (0.0%) on Adalimumab (serious AE)
Hand deformity8,49054.5
52.6–56.6ROR 55.2 · calibrated p 7e-6 ✓
19.3 EB05 19.0 · IC025 +4.2
3/3 methods agree
Not in label — unassessedserious PRR 23.4 · ♀ 98% (drug 68%)not reported in cached trials
Synovitis11,43050.9
49.4–52.5ROR 51.7 · calibrated p 1e-5 ✓
18.9 EB05 18.6 · IC025 +4.2
3/3 methods agree
Labeled adverse reaction
exact term
serious PRR 22.2 · ♀ 92% (drug 68%)NCT01076205: 7/7,229 (0.1%) on Adalimumab (serious AE)
Red blood cell sedimentation rate abnormal1,44147.8
44.0–52.1ROR 47.9 · calibrated p 2e-5 ✓
18.5 EB05 17.7 · IC025 +4.1
3/3 methods agree
Lab value / disease markerserious n=1,427NCT01076205: 1/7,229 (0.0%) on Adalimumab (serious AE)
Facet joint syndrome1,91845.6
42.5–49.1ROR 45.8 · calibrated p 2e-5 ✓
18.1 EB05 17.5 · IC025 +4.1
3/3 methods agree
Not in label — unassessedserious n=1,915 · ♀ 100% (drug 68%) · 100% clinicianNCT01076205: 2/7,229 (0.0%) on Adalimumab (serious AE)
Adjustment disorder with depressed mood1,17240.7
37.2–44.5ROR 40.8 · calibrated p 5e-5 ✓
17.3 EB05 16.5 · IC025 +4.0
3/3 methods agree
Not in label — unassessedserious n=1,166 · ♀ 100% (drug 68%) · 100% cliniciannot reported in cached trials
Bone erosion2,02339.0
36.5–41.7ROR 39.1 · calibrated p 6e-5 ✓
17.0 EB05 16.4 · IC025 +4.0
3/3 methods agree
Not in label — unassessedserious n=2,000not reported in cached trials
X-ray abnormal1,00337.6
34.2–41.3ROR 37.6 · calibrated p 8e-5 ✓
16.7 EB05 15.9 · IC025 +4.0
3/3 methods agree
Lab value / disease markerserious n=998 · ♀ 100% (drug 68%) · 100% cliniciannot reported in cached trials
Dislocation of vertebra1,24837.4
34.4–40.7ROR 37.5 · calibrated p 8e-5 ✓
16.7 EB05 15.9 · IC025 +4.0
3/3 methods agree
Not in label — unassessedserious n=1,242 · ♀ 100% (drug 68%)not reported in cached trials
Hidradenitis4,73935.1
33.6–36.6ROR 35.3 · calibrated p 1e-4 ✓
16.2 EB05 15.9 · IC025 +4.0
3/3 methods agree
Likely indication confounding
term in indications; also in warnings
serious n=2,443 · 75% consumerNCT01076205: 1/7,229 (0.0%) on Adalimumab (serious AE)
Adverse food reaction49233.3
29.2–37.9ROR 33.3 · calibrated p 2e-4 ✓
15.9 EB05 14.7 · IC025 +3.8
3/3 methods agree
Not in label — unassessedserious n=310 · 100% consumernot reported in cached trials
Helicobacter infection5,29131.5
30.3–32.8ROR 31.7 · calibrated p 2e-4 ✓
15.5 EB05 15.1 · IC025 +3.9
3/3 methods agree
Not in label — unassessedserious PRR 18.3 · ♀ 100% (drug 68%) · 91% cliniciannot reported in cached trials
Body height below normal32228.6
24.5–33.4ROR 28.6 · calibrated p 4e-4 ✓
14.7 EB05 13.4 · IC025 +3.7
3/3 methods agree
Reporting / coding artifactserious n=321 · 100% cliniciannot reported in cached trials
Intestinal stenosis2,08028.5
26.8–30.3ROR 28.6 · calibrated p 3e-4 ✓
14.7 EB05 14.2 · IC025 +3.8
3/3 methods agree
Not in label — unassessedserious n=2,018NCT01076205: 1/7,229 (0.0%) on Adalimumab (serious AE)
Surgical failure57228.4
25.3–31.9ROR 28.4 · calibrated p 4e-4 ✓
14.7 EB05 13.7 · IC025 +3.7
3/3 methods agree
Reporting / coding artifactserious n=571 · 100% consumernot reported in cached trials
Postoperative adhesion32827.7
23.8–32.3ROR 27.8 · calibrated p 4e-4 ✓
14.5 EB05 13.2 · IC025 +3.6
3/3 methods agree
Not in label — unassessedserious n=320 · 100% consumernot reported in cached trials
Retinitis80927.4
24.9–30.2ROR 27.4 · calibrated p 4e-4 ✓
14.4 EB05 13.6 · IC025 +3.7
3/3 methods agree
Not in label — unassessedserious n=806 · ♀ 100% (drug 68%) · 100% cliniciannot reported in cached trials
Small intestinal stenosis51126.9
23.9–30.4ROR 27.0 · calibrated p 5e-4 ✓
14.3 EB05 13.3 · IC025 +3.7
3/3 methods agree
Not in label — unassessedserious n=496not reported in cached trials
Gastrointestinal fistula40725.1
22.0–28.7ROR 25.2 · calibrated p 7e-4 ✓
13.8 EB05 12.7 · IC025 +3.6
3/3 methods agree
Not in label — unassessedserious n=395 · 100% consumernot reported in cached trials
Ileal stenosis81324.5
22.3–26.9ROR 24.6 · calibrated p 8e-4 ✓
13.6 EB05 12.8 · IC025 +3.6
3/3 methods agree
Not in label — unassessedserious n=802not reported in cached trials
Drug specific antibody62124.3
21.8–27.1ROR 24.3 · calibrated p 8e-4 ✓
13.5 EB05 12.7 · IC025 +3.6
3/3 methods agree
Lab value / disease markerserious n=504not reported in cached trials
Intestinal fistula63123.5
21.2–26.1ROR 23.6 · calibrated p 9e-4 ✓
13.3 EB05 12.5 · IC025 +3.6
3/3 methods agree
Not in label — unassessedserious n=613not reported in cached trials
Folliculitis4,61523.5
22.6–24.4ROR 23.7 · calibrated p 9e-4 ✓
13.3 EB05 13.0 · IC025 +3.7
3/3 methods agree
Not in label — unassessedserious PRR 17.1 · ♀ 95% (drug 68%) · 91% clinicianNCT01076205: 1/7,229 (0.0%) on Adalimumab (serious AE)
Large intestinal stenosis86822.8
20.8–24.9ROR 22.8 · calibrated p 0.001 ✓
13.1 EB05 12.4 · IC025 +3.6
3/3 methods agree
Not in label — unassessedserious n=834not 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
Tendon disorder3,0122.52.4–2.6signal
Opportunistic infection9,3482.12.1–2.2signal
Liver injury17,7181.81.8–1.8raised
Serious infection43,4601.71.7–1.7raised
Interstitial lung disease5,2141.71.6–1.7raised
Fall / fracture15,4631.21.2–1.2raised
Depression9,8841.01.0–1.1raised
Gi bleeding5,9341.00.9–1.0lower than other drugs
Hyperglycaemia / diabetes10,2000.90.9–0.9lower than other drugs
Pancreatitis2,3040.80.8–0.9lower than other drugs
Anaemia8,4660.80.8–0.9lower than other drugs
Malignancy10,2720.80.8–0.8lower than other drugs
Venous thromboembolism5,6860.80.8–0.8lower than other drugs
Myocardial infarction4,7100.70.7–0.7lower than other drugs
Anaphylaxis / angioedema2,6210.60.6–0.6lower than other drugs
Stroke5,1630.60.6–0.6lower than other drugs

Trial evidence (ClinicalTrials.gov)

✓ Trial adverse-event data found on ClinicalTrials.gov

Largest completed trials with posted results that list Adalimumab 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 (9 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
Drug ineffective (drug did not work)91,6122.2
2.1–2.2ROR 2.3 · calibrated p 0.889
2.1 EB05 2.1 · IC025 +1.0
3/3 methods agree
Reporting / coding artifactage-adj. PRR 2.3 · serious PRR 4.0NCT01076205: 8/7,229 (0.1%) on Adalimumab (serious AE)
Pain49,6732.5
2.5–2.6ROR 2.6 · calibrated p 0.752
2.4 EB05 2.4 · IC025 +1.3
3/3 methods agree
Labeled adverse reaction
exact term
age-adj. PRR 2.5 · serious PRR 2.9NCT01076959: 3/7,740 (0.0%) on Adalimumab (serious AE)
Arthralgia (joint pain)48,5903.8
3.8–3.9ROR 4.0 · calibrated p 0.370
3.5 EB05 3.5 · IC025 +1.8
3/3 methods agree
Labeled adverse reaction
exact term
age-adj. PRR 3.3 · serious PRR 4.7NCT01076959: 4/7,740 (0.1%) on Adalimumab (serious AE)
Injection site pain (pain where injected)47,3755.3
5.3–5.4ROR 5.7 · calibrated p 0.174
4.7 EB05 4.6 · IC025 +2.2
3/3 methods agree
Labeled adverse reaction
exact term
age-adj. PRR 5.4 · serious PRR 4.8 · 90% consumerNCT01076959: 3/7,740 (0.0%) on Adalimumab (serious AE)
Rheumatoid arthritis36,06513.6
13.4–13.7ROR 14.3 · calibrated p 0.009 ✓
9.5 EB05 9.4 · IC025 +3.2
3/3 methods agree
Likely indication confounding
term in indications; also in warnings
age-adj. PRR 11.0 · serious PRR 11.0NCT01076959: 5/7,740 (0.1%) on Adalimumab (serious AE)
Headache28,7661.4
1.4–1.4ROR 1.4 · calibrated p 0.578
1.4 EB05 1.4 · IC025 +0.4Labeled adverse reaction
exact term
age-adj. PRR 1.3 · serious PRR 1.8NCT01076205: 5/7,229 (0.1%) on Adalimumab (serious AE)
Nausea27,4861.0
1.0–1.1ROR 1.0 · calibrated p 0.334
1.0 EB05 1.0 · IC025 +0.0Labeled adverse reaction
exact term
age-adj. PRR 1.0 · serious PRR 1.4NCT01076205: 5/7,229 (0.1%) on Adalimumab (serious AE)
Diarrhoea (diarrhea)25,8501.2
1.2–1.2ROR 1.2 · calibrated p 0.450
1.2 EB05 1.2 · IC025 +0.2Not in label — unassessedage-adj. PRR 1.3 · serious PRR 1.6NCT01076959: 2/7,740 (0.0%) on Adalimumab (serious AE)
Rash25,7451.8
1.8–1.8ROR 1.9 · calibrated p 0.859
1.8 EB05 1.8 · IC025 +0.8Labeled adverse reaction
exact term
age-adj. PRR 1.8 · serious PRR 2.8NCT01076959: 2/7,740 (0.0%) on Adalimumab (serious AE)
Psoriasis24,9176.8
6.7–6.9ROR 7.0 · calibrated p 0.098
5.7 EB05 5.6 · IC025 +2.5
3/3 methods agree
Likely indication confounding
term in indications; also in warnings
age-adj. PRR 6.2 · serious PRR 8.1NCT01076205: 2/7,229 (0.0%) on Adalimumab (serious AE)
Pain in extremity24,5782.6
2.6–2.7ROR 2.7 · calibrated p 0.741
2.5 EB05 2.5 · IC025 +1.3
3/3 methods agree
Labeled adverse reaction
exact term
age-adj. PRR 2.4 · serious PRR 3.2NCT01076205: 5/7,229 (0.1%) on Adalimumab (serious AE)
Incorrect dose administered22,3833.2
3.1–3.2ROR 3.3 · calibrated p 0.548
3.0 EB05 2.9 · IC025 +1.5
3/3 methods agree
Reporting / coding artifactage-adj. PRR 3.6 · serious PRR 1.3 · 92% consumernot reported in cached trials
Off label use (used outside approved label)21,8580.7
0.7–0.8ROR 0.7 · calibrated p 0.149
0.8 EB05 0.7 · IC025 -0.4
PRR-only: not supported by EBGM or IC
Reporting / coding artifactage-adj. PRR 0.8 · serious PRR 1.3not reported in cached trials

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.

✓ A hand-written Bradford Hill causality assessment exists for this drug: TNF-inhibitors (adalimumab) ↔ Drug-induced lupus.

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 Adalimumab?

In FDA FAERS, the most frequently co-reported reaction terms for Adalimumab are pain, arthralgia, injection site pain, fatigue, rheumatoid arthritis, 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 Adalimumab have an FDA boxed warning?

Yes. The current FDA label carries a boxed warning: WARNING: SERIOUS INFECTIONS AND MALIGNANCY SERIOUS INFECTIONS Patients treated with HUMIRA are at increased risk for developing serious infections that may lead to hospitalization or death [see Warnings and Precautions ( 5.1 )] . Most patients who developed these infections were taking concomitant immunosuppressants such as methotrexate or corticosteroids.

Do FAERS signals prove that Adalimumab 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.