Reported Reactions

Adverse event reports that FDA received

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Hepatitis adverse event reports that record this term

Kind of term
MedDRA preferred term

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 25,070 adverse event reports that record the MedDRA preferred term Hepatitis. The person who codes a report selects the term that agrees best with the description of the reporter.

FDA received 1,412 reports in the 12 months to June 2026 and 1,571 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 478 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, 1,412 (0.1%) record this term. Reports for patients aged 18 to 44 were 19.3% of the reports that record this term and 12.3% 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.

Data version

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

Drugs in these reports

The table has the 76 drug pages with 250 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 Hepatitis name as a suspect product, in order of name
DrugClassReports with this term
Acetaminophen846
ActemraInterleukin-6 receptor antagonist1,043
AdalimumabTumor necrosis factor blocker582
Aimovig456
Alendronate sodiumBisphosphonate273
Alendronic Acid291
AravaAntirheumatic agent774
AtezolizumabProgrammed death Receptor-1 blocking antibody327
Atorvastatin308
AzathioprinePurine antimetabolite589
Berinert312
Botulinum toxin type aAcetylcholine release inhibitor315
ButransPartial opioid agonist316
CandesartanAngiotensin 2 receptor blocker405
CarboplatinPlatinum-based drug515
CelebrexNonsteroidal anti-inflammatory drug355
Certolizumab pegolTumor necrosis factor blocker252
Cetirizine hydrochlorideHistamine-1 receptor antagonist327
Chlorhexidine gluconate258
CimziaTumor necrosis factor blocker598
Cortisone acetateCorticosteroid308
CosentyxInterleukin-17A antagonist643
CyclophosphamideAlkylating drug411
DesoximetasoneCorticosteroid451
DiclofenacNonsteroidal anti-inflammatory drug258
Diclofenac sodiumNonsteroidal anti-inflammatory drug561
Domperidone maleate282
EnbrelTumor necrosis factor blocker1,133
Erelzi476
ErgocalciferolProvitamin D2 compound289
Flumethasone Pivalate317
Folic acid436
FosamaxBisphosphonate456
GoldStandardized chemical allergen326
Gold Sodium Thiomalate386
Humira1,030
HydrocortisoneCorticosteroid258
HydroxychloroquineAntimalarial739
Hydroxychloroquine sulfateAntimalarial503
InfliximabTumor necrosis factor blocker540
IpilimumabCTLA-4-directed blocking antibody371
IsoniazidAntimycobacterial257
KeytrudaProgrammed death Receptor-1 blocking antibody545
LamictalAnti-epileptic agent334
LeflunomideAntirheumatic agent900
MethotrexateFolate analog metabolic inhibitor1,606
Methotrexate sodiumFolate analog metabolic inhibitor441
MethylprednisoloneCorticosteroid480
MinocyclineTetracycline-class drug301
Mycophenolate mofetilAntimetabolite immunosuppressant307
Myochrysine416
NaproxenNonsteroidal anti-inflammatory drug288
NivolumabProgrammed death Receptor-1 blocking antibody588
NucalaInterleukin-5 antagonist275
OpdivoProgrammed death Receptor-1 blocking antibody403
OrenciaSelective T cell costimulation modulator865
OxycodoneOpioid agonist343
PaclitaxelMicrotubule inhibitor271
Paracetamol635
PembrolizumabProgrammed death Receptor-1 blocking antibody495
Phenylephrine hydrochloridealpha-1 adrenergic agonist266
Phthalylsulfathiazole298
PrednisoloneCorticosteroid381
PrednisoneCorticosteroid946
RamiprilAngiotensin converting enzyme inhibitor315
RemicadeTumor necrosis factor blocker693
RituximabCD20-directed cytolytic antibody1,090
SimponiTumor necrosis factor blocker541
Sirukumab329
StelaraInterleukin-12 antagonist344
SulfasalazineAminosalicylate792
TocilizumabInterleukin-6 receptor antagonist386
Topiramate362
Tramadol hydrochlorideOpioid agonist287
XeljanzJanus kinase inhibitor501
YervoyCTLA-4-directed blocking antibody262

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 55 pharmacologic classes with 250 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 Hepatitis name, in order of name
ClassReports with this term
Acetylcholine release inhibitor320
Alkylating drug615
alpha-1 adrenergic agonist270
Aminosalicylate806
Angiotensin 2 receptor blocker687
Angiotensin converting enzyme inhibitor362
Anthracycline topoisomerase inhibitor261
Anti-epileptic agent859
Antimalarial1,492
Antimetabolite immunosuppressant367
Antimycobacterial518
Antirheumatic agent1,674
Atypical antipsychotic756
Benzodiazepine258
Biguanide312
Bisphosphonate881
Blood coagulation factor284
Calcineurin inhibitor immunosuppressant495
CD20-directed cytolytic antibody1,336
Cephalosporin antibacterial275
Corticosteroid4,000
CTLA-4-directed blocking antibody697
Dihydrofolate reductase inhibitor antibacterial425
Factor Xa inhibitor315
Fluoroquinolone antibacterial317
Folate analog metabolic inhibitor2,301
Hepatitis B virus nucleoside analog reverse transcriptase inhibitor398
Histamine-1 receptor antagonist807
Histamine-2 receptor antagonist291
HMG-CoA reductase inhibitor774
Interleukin-12 antagonist466
Interleukin-17A antagonist725
Interleukin-5 antagonist288
Interleukin-6 receptor antagonist1,693
Janus kinase inhibitor892
Kinase inhibitor1,832
Microtubule inhibitor347
Nonsteroidal anti-inflammatory drug2,415
Norepinephrine reuptake inhibitor298
Nucleoside metabolic inhibitor625
Opioid agonist1,171
Partial opioid agonist348
Penicillin-class antibacterial385
Phosphodiesterase 4 inhibitor421
Platinum-based drug770
Programmed death Receptor-1 blocking antibody2,510
Proton pump inhibitor711
Provitamin D2 compound294
Purine antimetabolite880
Selective T cell costimulation modulator930
Serotonin reuptake inhibitor356
Standardized chemical allergen626
Tetracycline-class drug707
Tumor necrosis factor blocker4,776
Vascular endothelial growth factor inhibitor334

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

Reports by month

Reports that record Hepatitis, by month, five years to June 2026
010020020222023202420252026

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 Hepatitis
AgeReportsShareShare as a bar
Under 2920.4%
2 to 114841.9%
12 to 175192.1%
18 to 444,83119.3%
45 to 646,72426.8%
65 to 743,20612.8%
75 and over2,56610.2%
Age not given6,64826.5%
Sex of the patient in the reports that record Hepatitis
SexReportsShareShare as a bar
Female13,19152.6%
Male9,24136.9%
Unknown or not given2,63810.5%

Age and sex are as the report gives them. 22.2% of these reports give the United States as the country.

Terms near this one

Official pages

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Reported Reactions. Hepatitis: adverse event reports that record this term. https://reportedreactions.com/reaction/hepatitis/ 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 Hepatitis mean in an adverse event report?

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 .