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Dulaglutide side effects: what 88,150 FDA adverse event reports show

Dulaglutide · Trulicity · 1,160 reaction terms · 216,489 drug–reaction co-reports · data 2026-09-14
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Drug class

GLP-1 Receptor Agonist

FDA label (Established Pharmacologic Class) · compare the class

Brand names

Trulicity

openFDA label

Who reports

88,150 reports · 26% serious · 1,676 with death outcome · 58% female

openFDA FAERS counts, all years, deduplication not applied

Used for

TRULICITY ® is indicated: As an adjunct to diet and exercise to improve glycemic control in adults and pediatric patients 10 years of age and older with type 2 diabetes mellitus. To reduce the risk of major adverse cardiovascular events (cardiovascular.

FDA label, Indications and Usage

What it is

Dulaglutide is a human GLP-1 receptor agonist. The molecule is a fusion protein that consists of 2 identical, disulfide-linked chains, each containing an N-terminal GLP-1 analog sequence coval.

FDA label, Description section

Boxed warning

RISK OF THYROID C-CELL TUMORS In male and female rats, dulaglutide causes a dose-related and treatment-duration-dependent increase in the incidence of thyroid C-cell tumors (adenomas and carcinomas) after lifetime exposure.

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 — boxed warning 3Labeled adverse reaction 2Labeled (related wording) 12Likely indication confounding 3Reporting / coding artifact 5Lab value / disease marker 5Not in label — unassessed 10
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). 1,120 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
Gastric hypomotility8694.4
73.5–121.2ROR 94.5 · calibrated p 3e-7 ✓
66.6 EB05 55.6 · IC025 +5.3
3/3 methods agree
vs other GLP-1 Receptor Agonists: PRR 8.7 (6.4–11.7)
Not in label — unassessedserious n=85 · 100% consumernot reported in cached trials
Gastrointestinal hypomotility54677.1
70.0–84.9ROR 77.5 · calibrated p 8e-7 ✓
58.1 EB05 54.1 · IC025 +5.6
3/3 methods agree
vs other GLP-1 Receptor Agonists: PRR 7.7 (6.9–8.7)
Not in label — unassessedserious n=535 · 100% consumernot reported in cached trials
Accidental underdose2,36746.1
44.1–48.1ROR 47.3 · calibrated p 2e-5 ✓
38.6 EB05 37.4 · IC025 +5.2
3/3 methods agree
vs other GLP-1 Receptor Agonists: PRR 181.6 (150.4–219.2)
Not in label — unassessedserious n=57 · 93% consumernot reported in cached trials
Glycosylated haemoglobin abnormal16037.1
31.4–43.8ROR 37.2 · calibrated p 9e-5 ✓
32.0 EB05 28.1 · IC025 +4.6
3/3 methods agree
vs other GLP-1 Receptor Agonists: PRR 14.8 (11.4–19.0)
Lab value / disease markerserious n=27 · 84% consumerNCT04255433: 1/6,647 (0.0%) on Dulaglutide (serious AE)
Glycosylated haemoglobin increased2,95431.5
30.3–32.7ROR 32.6 · calibrated p 2e-4 ✓
27.9 EB05 27.1 · IC025 +4.7
3/3 methods agree
vs other GLP-1 Receptor Agonists: PRR 8.9 (8.5–9.4)
Lab value / disease markerserious PRR 28.1 · 88% consumerNCT04255433: 1/6,647 (0.0%) on Dulaglutide (serious AE)
Extra dose administered3,17020.5
19.7–21.2ROR 21.2 · calibrated p 0.002 ✓
18.9 EB05 18.4 · IC025 +4.2
3/3 methods agree
vs other GLP-1 Receptor Agonists: PRR 70.5 (63.5–78.2)
Not in label — unassessedserious n=92 · 94% consumernot reported in cached trials
Glycosylated haemoglobin decreased12219.7
16.3–23.6ROR 19.7 · calibrated p 0.002 ✓
18.2 EB05 15.6 · IC025 +3.8
3/3 methods agree
vs other GLP-1 Receptor Agonists: PRR 4.1 (3.3–5.1)
Lab value / disease markerserious n=20 · 89% consumerNCT04255433: 1/6,647 (0.0%) on Dulaglutide (serious AE)
Cyclic vomiting syndrome3815.3
11.0–21.3ROR 15.3 · calibrated p 0.008 ✓
14.2 EB05 10.7 · IC025 +3.1
3/3 methods agree
vs other GLP-1 Receptor Agonists: PRR 0.9 (0.6–1.2)
Not in label — unassessedserious n=37 · 100% consumernot reported in cached trials
Eructation (belching)1,10514.6
13.8–15.5ROR 14.8 · calibrated p 0.007 ✓
13.8 EB05 13.1 · IC025 +3.7
3/3 methods agree
vs other GLP-1 Receptor Agonists: PRR 3.6 (3.4–3.9)
Labeled adverse reaction
exact term
serious n=190 · 94% consumerNCT04255433: 243/6,647 (3.7%) on Dulaglutide
Blood glucose abnormal1,02613.9
13.1–14.8ROR 14.1 · calibrated p 0.009 ✓
13.2 EB05 12.5 · IC025 +3.6
3/3 methods agree
vs other GLP-1 Receptor Agonists: PRR 7.6 (7.0–8.2)
Lab value / disease markerserious PRR 11.5 · 92% consumerNCT04255433: 1/6,647 (0.0%) on Dulaglutide (serious AE)
Thirst decreased3212.9
9.0–18.4ROR 12.9 · calibrated p 0.016 ✓
11.8 EB05 8.5 · IC025 +2.8
3/3 methods agree
vs other GLP-1 Receptor Agonists: PRR 5.1 (3.3–8.0)
Not in label — unassessedserious n=24 · 74% consumernot reported in cached trials
Accidental overdose1,88812.9
12.3–13.5ROR 13.2 · calibrated p 0.012 ✓
12.3 EB05 11.8 · IC025 +3.5
3/3 methods agree
vs other GLP-1 Receptor Agonists: PRR 32.3 (29.3–35.6)
Reporting / coding artifactserious PRR 1.5 · 91% consumerNCT04255433: 1/6,647 (0.0%) on Dulaglutide (serious AE)
Diabetic metabolic decompensation6712.0
9.4–15.4ROR 12.1 · calibrated p 0.018 ✓
11.3 EB05 9.1 · IC025 +3.0
3/3 methods agree
vs other GLP-1 Receptor Agonists: PRR 9.8 (6.9–14.0)
Likely indication confounding
shares a disease stem with the indications wording
serious n=67NCT04255433: 1/6,647 (0.0%) on Dulaglutide (serious AE)
Genital abscess1811.0
6.8–17.6ROR 11.0 · calibrated p 0.031 ✓
9.4 EB05 5.9 · IC025 +2.3
3/3 methods agree
vs other GLP-1 Receptor Agonists: only this drug
Not in label — unassessedserious n=17not reported in cached trials
Diabetic ketosis1510.3
6.1–17.3ROR 10.3 · calibrated p 0.040 ✓
8.5 EB05 5.2 · IC025 +2.1
3/3 methods agree
vs other GLP-1 Receptor Agonists: only this drug
Likely indication confounding
shares a disease stem with the indications wording
serious n=15not reported in cached trials
Obstructive pancreatitis3010.1
7.0–14.5ROR 10.1 · calibrated p 0.037 ✓
9.0 EB05 6.4 · IC025 +2.5
3/3 methods agree
vs other GLP-1 Receptor Agonists: PRR 3.1 (2.0–4.6)
Not in label — unassessedserious n=30 · ♀ 0% (drug 58%)NCT04255433: 4/6,647 (0.1%) on Dulaglutide (serious AE)
Wrong patient received product1109.5
7.8–11.5ROR 9.5 · calibrated p 0.040 ✓
9.0 EB05 7.6 · IC025 +2.8
3/3 methods agree
vs other GLP-1 Receptor Agonists: only this drug
Reporting / coding artifactserious n=13 · 86% consumernot reported in cached trials
Blood glucose decreased1,8479.4
9.0–9.9ROR 9.6 · calibrated p 0.037 ✓
9.1 EB05 8.8 · IC025 +3.1
3/3 methods agree
vs other GLP-1 Receptor Agonists: PRR 2.0 (1.9–2.1)
Labeled — boxed warning
synonym match
serious PRR 11.6 · 95% consumerNCT04255433: 1/6,647 (0.0%) on Dulaglutide (serious AE)
Hyperlipasaemia209.4
6.0–14.7ROR 9.4 · calibrated p 0.050 ✓
8.0 EB05 5.3 · IC025 +2.2
3/3 methods agree
vs other GLP-1 Receptor Agonists: only this drug
Not in label — unassessedserious n=20not reported in cached trials
Early satiety678.6
6.8–11.0ROR 8.6 · calibrated p 0.056
8.0 EB05 6.5 · IC025 +2.6
3/3 methods agree
vs other GLP-1 Receptor Agonists: PRR 0.8 (0.6–1.0)
Not in label — unassessedserious n=47 · 88% consumernot reported in cached trials
Diabetic retinopathy1198.6
7.2–10.3ROR 8.6 · calibrated p 0.055
8.1 EB05 7.0 · IC025 +2.7
3/3 methods agree
vs other GLP-1 Receptor Agonists: PRR 3.6 (2.9–4.4)
Labeled — boxed warning
exact term
serious n=76 · 84% consumerNCT04255433: 2/6,647 (0.0%) on Dulaglutide (serious AE)
Euglycaemic diabetic ketoacidosis1348.2
6.9–9.8ROR 8.3 · calibrated p 0.062
7.8 EB05 6.8 · IC025 +2.7
3/3 methods agree
vs other GLP-1 Receptor Agonists: PRR 4.5 (3.6–5.5)
Likely indication confounding
shares a disease stem with the indications wording
serious n=133NCT04255433: 2/6,647 (0.0%) on Dulaglutide (serious AE)
Insulin resistance688.1
6.4–10.4ROR 8.1 · calibrated p 0.067
7.6 EB05 6.2 · IC025 +2.5
3/3 methods agree
vs other GLP-1 Receptor Agonists: PRR 6.0 (4.4–8.1)
Reporting / coding artifactserious n=26 · 87% consumernot reported in cached trials
Vomiting projectile927.9
6.4–9.7ROR 7.9 · calibrated p 0.072
7.4 EB05 6.2 · IC025 +2.5
3/3 methods agree
vs other GLP-1 Receptor Agonists: PRR 4.1 (3.2–5.3)
Labeled adverse reaction
exact term
serious n=25 · 88% consumernot reported in cached trials
Incorrect product formulation administered277.8
5.3–11.5ROR 7.9 · calibrated p 0.081
6.9 EB05 4.9 · IC025 +2.1
3/3 methods agree
vs other GLP-1 Receptor Agonists: only this drug
Reporting / coding artifact100% consumernot reported in cached trials
Pancreatitis (pancreas inflammation)1,5187.0
6.7–7.4ROR 7.1 · calibrated p 0.095
6.8 EB05 6.5 · IC025 +2.7
3/3 methods agree
vs other GLP-1 Receptor Agonists: PRR 2.3 (2.2–2.5)
Labeled — boxed warning
exact term
serious PRR 15.1 · 79% consumerNCT04255433: 4/6,647 (0.1%) on Dulaglutide (serious AE)
Product administered at inappropriate site5096.8
6.3–7.5ROR 6.9 · calibrated p 0.105
6.6 EB05 6.2 · IC025 +2.6
3/3 methods agree
vs other GLP-1 Receptor Agonists: PRR 169.7 (114.5–251.6)
Reporting / coding artifactserious n=13 · 87% consumernot reported in cached trials
Blood glucose fluctuation3046.7
6.0–7.6ROR 6.8 · calibrated p 0.110
6.5 EB05 5.9 · IC025 +2.5
3/3 methods agree
vs other GLP-1 Receptor Agonists: PRR 2.2 (1.9–2.5)
Lab value / disease markerserious n=90 · 90% consumerNCT04255433: 2/6,647 (0.0%) on Dulaglutide (serious AE)

Trial evidence (ClinicalTrials.gov)

✓ Trial adverse-event data found on ClinicalTrials.gov

Largest completed trials with posted results that list Dulaglutide 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 (23 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
Nausea10,4053.2
3.1–3.2ROR 3.5 · calibrated p 0.496
3.1 EB05 3.1 · IC025 +1.6
3/3 methods agree
vs other GLP-1 Receptor Agonists: PRR 3.0 (3.0–3.1)
Labeled adverse reaction
exact term
serious PRR 3.9 · 86% consumerNCT04255433: 6/6,647 (0.1%) on Dulaglutide (serious AE)
Diarrhoea (diarrhea)6,0902.3
2.2–2.3ROR 2.4 · calibrated p 0.876
2.3 EB05 2.2 · IC025 +1.1
3/3 methods agree
vs other GLP-1 Receptor Agonists: PRR 4.2 (4.1–4.3)
Labeled adverse reaction
exact term
serious PRR 3.3 · 85% consumerNCT04255433: 10/6,647 (0.2%) on Dulaglutide (serious AE)
Vomiting5,7873.0
2.9–3.0ROR 3.1 · calibrated p 0.595
2.9 EB05 2.9 · IC025 +1.5
3/3 methods agree
vs other GLP-1 Receptor Agonists: PRR 3.4 (3.3–3.5)
Labeled adverse reaction
exact term
serious PRR 4.6 · 84% consumerNCT04255433: 9/6,647 (0.1%) on Dulaglutide (serious AE)
Incorrect dose administered5,5986.0
5.9–6.2ROR 6.4 · calibrated p 0.127
5.9 EB05 5.8 · IC025 +2.5
3/3 methods agree
vs other GLP-1 Receptor Agonists: PRR 16.5 (15.8–17.2)
Reporting / coding artifactserious PRR 1.9 · 94% consumernot reported in cached trials
Inappropriate schedule of product administration3,8385.3
5.1–5.4ROR 5.5 · calibrated p 0.191
5.2 EB05 5.0 · IC025 +2.3
3/3 methods agree
vs other GLP-1 Receptor Agonists: PRR 11.7 (11.2–12.3)
Reporting / coding artifactserious PRR 2.3 · 92% consumernot reported in cached trials
Drug ineffective (drug did not work)3,6780.7
0.6–0.7ROR 0.6 · calibrated p 0.106
0.7 EB05 0.6 · IC025 -0.6
PRR-only: not supported by EBGM or IC
vs other GLP-1 Receptor Agonists: PRR 5.8 (5.6–6.0)
Reporting / coding artifactserious PRR 0.6 · 86% consumernot reported in cached trials
Decreased appetite (loss of appetite)3,2553.4
3.3–3.5ROR 3.5 · calibrated p 0.493
3.3 EB05 3.2 · IC025 +1.7
3/3 methods agree
vs other GLP-1 Receptor Agonists: PRR 2.2 (2.2–2.3)
Labeled adverse reaction
exact term
serious PRR 3.6 · 91% consumerNCT04255433: 2/6,647 (0.0%) on Dulaglutide (serious AE)
Extra dose administered3,17020.5
19.7–21.2ROR 21.2 · calibrated p 0.002 ✓
18.9 EB05 18.4 · IC025 +4.2
3/3 methods agree
vs other GLP-1 Receptor Agonists: PRR 70.5 (63.5–78.2)
Not in label — unassessedserious n=92 · 94% consumernot reported in cached trials
Glycosylated haemoglobin increased2,95431.5
30.3–32.7ROR 32.6 · calibrated p 2e-4 ✓
27.9 EB05 27.1 · IC025 +4.7
3/3 methods agree
vs other GLP-1 Receptor Agonists: PRR 8.9 (8.5–9.4)
Lab value / disease markerserious PRR 28.1 · 88% consumerNCT04255433: 1/6,647 (0.0%) on Dulaglutide (serious AE)
Abdominal pain upper2,4732.9
2.8–3.0ROR 2.9 · calibrated p 0.646
2.9 EB05 2.8 · IC025 +1.5
3/3 methods agree
vs other GLP-1 Receptor Agonists: PRR 3.7 (3.6–3.9)
Labeled adverse reaction
exact term
serious PRR 3.8 · 89% consumerNCT04255433: 10/6,647 (0.2%) on Dulaglutide (serious AE)
Fatigue (tiredness)2,4700.8
0.7–0.8ROR 0.7 · calibrated p 0.155
0.8 EB05 0.7 · IC025 -0.5
PRR-only: not supported by EBGM or IC
vs other GLP-1 Receptor Agonists: PRR 3.3 (3.2–3.5)
Labeled adverse reaction
exact term
serious PRR 1.0 · 84% consumerNCT04255433: 5/6,647 (0.1%) on Dulaglutide (serious AE)

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 Dulaglutide?

In FDA FAERS, the most frequently co-reported reaction terms for Dulaglutide are nausea, injection site pain, blood glucose increased, diarrhoea, vomiting, weight decreased. 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 Dulaglutide have an FDA boxed warning?

Yes. The current FDA label carries a boxed warning: RISK OF THYROID C-CELL TUMORS In male and female rats, dulaglutide causes a dose-related and treatment-duration-dependent increase in the incidence of thyroid C-cell tumors (adenomas and carcinomas) after lifetime exposure.

Do FAERS signals prove that Dulaglutide 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.