Reported Reactions

Adverse event reports that FDA received

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Diarrhoea adverse event reports that record this term

Kind of term
MedDRA preferred term
Plain meaning
loose or frequent stools

What a report is

A report is not proof that the drug was the cause of the event.

FDA says:

Adverse event reports submitted to FDA do not undergo extensive validation or verification. Therefore, a causal relationship cannot be established between product and reactions listed in a report. While a suspected relationship may exist, it is not medically validated and should not be the sole source of information for clinical decision making or other assumptions about the safety or efficacy of a product. Additionally, it is important to remember that adverse event reports represent a small percentage of total usage numbers of a product. Common products may have a higher number of adverse events due to the higher total number of people using the product.

Source: openFDA, Drug Adverse Event Overview, section "Responsible use of the data". The site read the page on . The data have the reports that FDA received through .

FDA also says:

There is no certainty that the reported event (adverse event or medication error) was actually due to the product. FDA does not require that a causal relationship between a product and event be proven, and reports do not always contain enough detail to properly evaluate an event. The information in these reports has not been scientifically or otherwise verified as to a cause and effect relationship and cannot be used to estimate the incidence of these events.

Source: openFDA, Drug Adverse Event Overview. The site read the page on .

Do not rely on openFDA to make decisions regarding medical care. While we make every effort to ensure that data is accurate, you should assume all results are unvalidated.

Source: openFDA, Response of the drug event API (meta.disclaimer). The site read the page on .

Not medical advice. This site counts what was reported to FDA. Questions about a medicine or device belong with a pharmacist or clinician.

Reports on file

From January 2004 to June 2026, FDA received 633,344 adverse event reports that record the MedDRA preferred term Diarrhoea. In plain words, the term means: loose or frequent stools. The person who codes a report selects the term that agrees best with the description of the reporter.

FDA received 43,937 reports in the 12 months to June 2026 and 41,036 in the 12 months before. FDA releases FAERS data every quarter, so the newest months are not complete. They grow in later releases.

By reports in the 12 months to June 2026, this term was number 7 of 1,436 reaction terms with a page. Of the 1,332,454 drug reports that FDA received in the 12 months to June 2026, 43,937 (3.3%) record this term. Reports for female patients were 58.5% of the reports that record this term and 52.7% of all drug reports.

The number of people who use the product is not in the data. A count is not a rate.

MedDRA

The Medical Dictionary for Regulatory Activities. The person who codes a report selects the preferred term that agrees best with the description of the reporter. FDA does not publish the description.

Plain meaning

Loose or frequent stools. The words are from the fixed dictionary of this site. They add nothing to a report.

Data version

openFDA FAERS release of 29 Oct 2026. Reports received through 30 Jun 2026.

Drugs in these reports

The table has the 85 drug pages with 2,500 or more reports that record this term. The rows are in order of name. A drug page with fewer reports for this term is not in the table. The counts are the counts that the site keeps for each reaction term, and a count can be lower than the count of FDA.

FDA says:

Additionally, it is important to remember that adverse event reports represent a small percentage of total usage numbers of a product. Common products may have a higher number of adverse events due to the higher total number of people using the product.

Source: openFDA, Drug Adverse Event Overview. The site read the page on .

Importantly, the AEMS data by themselves are not an indicator of the safety profile of the drug or biologic.

Source: FDA, FDA Adverse Event Monitoring System (AEMS) Public Dashboard. Content current as of . The site read the page on .

Drugs that the reports with the term Diarrhoea name as a suspect product, in order of name
DrugClassReports with this term
Acetaminophen3,422
ActemraInterleukin-6 receptor antagonist6,286
AdalimumabTumor necrosis factor blocker3,624
AfinitorKinase inhibitor2,524
AmbrisentanEndothelin receptor antagonist2,917
AravaAntirheumatic agent4,629
AubagioPyrimidine synthesis inhibitor3,835
AvastinVascular endothelial growth factor inhibitor2,826
BevacizumabVascular endothelial growth factor inhibitor4,125
ByettaGLP-1 receptor agonist2,561
CabometyxKinase inhibitor8,341
CapecitabineNucleoside metabolic inhibitor7,487
CarboplatinPlatinum-based drug5,266
CimziaTumor necrosis factor blocker5,007
CisplatinPlatinum-based drug3,209
CosentyxInterleukin-17A antagonist7,201
CyclophosphamideAlkylating drug4,142
Cymbalta3,436
Daybue3,539
DexamethasoneCorticosteroid5,263
Diclofenac sodiumNonsteroidal anti-inflammatory drug3,015
DocetaxelMicrotubule inhibitor4,753
DupixentInterleukin-4 receptor alpha antagonist4,175
EnbrelTumor necrosis factor blocker11,972
Erelzi2,521
EsbrietPyridone2,918
FluorouracilNucleoside metabolic inhibitor5,985
Folic acid2,747
FosamaxBisphosphonate3,007
HerceptinHER2/neu receptor antagonist2,609
Humira22,076
HydroxychloroquineAntimalarial3,257
Hydroxychloroquine sulfateAntimalarial3,066
IbranceKinase inhibitor5,371
ImbruvicaKinase inhibitor3,550
InfliximabTumor necrosis factor blocker4,517
Irinotecan3,218
KeytrudaProgrammed death Receptor-1 blocking antibody3,062
LeflunomideAntirheumatic agent5,037
LenalidomideThalidomide analog3,984
LenvimaKinase inhibitor3,096
LinzessGuanylate Cyclase-C agonist4,194
Lyrica2,919
MetforminBiguanide5,559
MethotrexateFolate analog metabolic inhibitor11,408
MiraLAXOsmotic laxative3,241
MounjaroGLP-1 receptor agonist5,420
Mycophenolate mofetilAntimetabolite immunosuppressant4,029
NaproxenNonsteroidal anti-inflammatory drug2,606
NivolumabProgrammed death Receptor-1 blocking antibody2,730
OfevKinase inhibitor8,801
OpsumitEndothelin receptor antagonist3,409
OrenciaSelective T cell costimulation modulator5,795
OrenitramProstacycline vasodilator3,619
OtezlaPhosphodiesterase 4 inhibitor23,537
OxaliplatinPlatinum-based drug6,059
Oxbryta3,150
OzempicGLP-1 receptor agonist5,169
PaclitaxelMicrotubule inhibitor3,836
Paxlovid3,950
PomalystThalidomide analog3,256
PrednisoneCorticosteroid8,288
RemicadeTumor necrosis factor blocker6,558
RemodulinProstacycline vasodilator4,940
RevlimidThalidomide analog27,210
RibavirinNucleoside analog antiviral2,756
RituximabCD20-directed cytolytic antibody7,465
Sandostatin LAR Depot2,551
SimponiTumor necrosis factor blocker4,107
StelaraInterleukin-12 antagonist3,442
SulfasalazineAminosalicylate4,248
SutentKinase inhibitor4,004
TacrolimusCalcineurin inhibitor immunosuppressant2,959
Tarceva3,492
Tecfidera7,914
TrastuzumabHER2/neu receptor antagonist3,392
TrulicityGLP-1 receptor agonist5,361
TykerbKinase inhibitor3,164
UptraviProstacyclin receptor agonist4,068
VedolizumabIntegrin receptor antagonist6,853
VerzenioKinase inhibitor4,877
VotrientKinase inhibitor3,253
XeljanzJanus kinase inhibitor8,006
XelodaNucleoside metabolic inhibitor5,204
ZepboundGLP-1 receptor agonist3,850

The page of each drug has the count of each reaction term in its reaction lookup.

Drug classes in these reports

The table has the 40 pharmacologic classes with 5,000 or more reports that record this term. The rows are in order of name.

FDA says:

Additionally, it is important to remember that adverse event reports represent a small percentage of total usage numbers of a product. Common products may have a higher number of adverse events due to the higher total number of people using the product.

Source: openFDA, Drug Adverse Event Overview. The site read the page on .

Importantly, the AEMS data by themselves are not an indicator of the safety profile of the drug or biologic.

Source: FDA, FDA Adverse Event Monitoring System (AEMS) Public Dashboard. Content current as of . The site read the page on .

Pharmacologic classes of the drugs that the reports with the term Diarrhoea name, in order of name
ClassReports with this term
Alkylating drug7,648
Aminosalicylate5,837
Angiotensin 2 receptor blocker8,760
Antimalarial8,565
Antimetabolite immunosuppressant6,431
Antirheumatic agent9,666
Atypical antipsychotic7,001
beta-Adrenergic blocker5,100
Biguanide9,653
Bisphosphonate7,548
Calcineurin inhibitor immunosuppressant6,350
CD20-directed cytolytic antibody11,658
Corticosteroid32,871
Endothelin receptor antagonist9,571
Folate analog metabolic inhibitor15,586
GLP-1 receptor agonist27,802
HER2/neu receptor antagonist9,860
Histamine-1 receptor antagonist7,546
HMG-CoA reductase inhibitor6,561
Integrin receptor antagonist10,461
Interleukin-17A antagonist8,344
Interleukin-6 receptor antagonist9,970
Janus kinase inhibitor13,844
Kinase inhibitor89,549
Microtubule inhibitor9,440
Nonsteroidal anti-inflammatory drug21,532
Nucleoside metabolic inhibitor23,944
Opioid agonist14,397
Osmotic laxative5,993
Phosphodiesterase 4 inhibitor25,116
Platinum-based drug14,534
Programmed death Receptor-1 blocking antibody11,493
Prostacycline vasodilator15,340
Proteasome inhibitor6,671
Proton pump inhibitor13,945
Selective T cell costimulation modulator6,786
Serotonin reuptake inhibitor8,349
Thalidomide analog34,844
Tumor necrosis factor blocker42,364
Vascular endothelial growth factor inhibitor7,710

A class with many reports in all has many reports for almost every term.

Reports by month

Reports that record Diarrhoea, by month, five years to June 2026
02,5005,00020222023202420252026

FDA releases FAERS data every quarter, so the newest months are not complete. They grow in later releases.

Patients in these reports

Age of the patient in the reports that record Diarrhoea
AgeReportsShareShare as a bar
Under 22,4270.4%
2 to 116,3401%
12 to 175,0990.8%
18 to 4467,91910.7%
45 to 64154,56924.4%
65 to 7499,29615.7%
75 and over76,13412%
Age not given221,56035%
Sex of the patient in the reports that record Diarrhoea
SexReportsShareShare as a bar
Female370,78058.5%
Male206,03532.5%
Unknown or not given56,5298.9%

Age and sex are as the report gives them. 68% of these reports give the United States as the country.

Terms near this one

Official pages

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Reported Reactions. Diarrhoea: adverse event reports that record this term. https://reportedreactions.com/reaction/diarrhoea/ Source: U.S. Food and Drug Administration, openFDA Drug Adverse Event (FAERS) files, release of . Reports received through .

Where the data come from

The counts come from the openFDA Drug Adverse Event (FAERS) bulk files, release of 29 Oct 2026. The files have the reports that FDA received through 30 Jun 2026. A drug name is the name on the report. The site matches it to a brand name or a generic name of the National Drug Code Directory of 2 Nov 2026. A class is the pharmacologic class (EPC) of the FDA label.

The count has the reports with each spelling of one MedDRA preferred term. The site does not publish a report narrative, a lot number, a detail of a patient or the identity of a reporter. The record of FDA is the authority. See how the site counts reports, the data sources and the corrections page.

Questions

What does Diarrhoea mean in an adverse event report?

In plain words: loose or frequent stools. It is a MedDRA preferred term. FDA codes the description of a reporter with the MedDRA dictionary. The openFDA files do not have the description itself, and this site does not show it.

Does a drug in the table mean that the drug was responsible for this reaction?

No. FDA says:

No individual drug is connected to any individual reaction.

Source: openFDA, Drug Adverse Event Overview. The site read the page on .

When a report lists multiple drugs and multiple reactions, there is no way to conclude from the data therein that a given drug is responsible for a given reaction.

Source: openFDA, Drug Adverse Event Overview. The site read the page on .

What does this page tell a person who has this symptom?

This page gives counts of reports. It cannot assess a person. A pharmacist or a clinician can assess a person.

If this is a medical emergency, please call 911.

Source: FDA, MedWatch Online Voluntary Reporting Form. The site read the page on .