Reported Reactions

Adverse event reports that FDA received

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Tremor adverse event reports that record this term

Kind of term
MedDRA preferred term
Plain meaning
shaking

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 163,256 adverse event reports that record the MedDRA preferred term Tremor. In plain words, the term means: shaking. The person who codes a report selects the term that agrees best with the description of the reporter.

FDA received 7,767 reports in the 12 months to June 2026 and 7,807 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 89 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, 7,767 (0.6%) record this term. Reports for female patients were 60.5% 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

Shaking. 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 92 drug pages with 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 Tremor name as a suspect product, in order of name
DrugClassReports with this term
AbilifyAtypical antipsychotic1,967
Acetaminophen537
Albuterol sulfatebeta2-Adrenergic agonist600
AlprazolamBenzodiazepine502
AmpyraPotassium channel blocker956
AripiprazoleAtypical antipsychotic931
AubagioPyrimidine synthesis inhibitor585
AvonexInterferon beta2,488
Bupropion hydrochlorideAminoketone724
ByettaGLP-1 receptor agonist1,460
Carbidopa levodopaAromatic amino acid1,100
ChantixPartial cholinergic nicotinic agonist987
CiprofloxacinFluoroquinolone antibacterial797
CitalopramSerotonin reuptake inhibitor755
ClonazepamBenzodiazepine944
ClozapineAtypical antipsychotic605
Copaxone823
Cymbalta2,733
DepakoteAnti-epileptic agent732
DexamethasoneCorticosteroid839
DiazepamBenzodiazepine579
Duodopa566
DupixentInterleukin-4 receptor alpha antagonist598
EffexorSerotonin and norepinephrine reuptake inhibitor513
EnbrelTumor necrosis factor blocker1,699
EscitalopramSerotonin reuptake inhibitor783
FentanylOpioid agonist559
FluoxetineSerotonin reuptake inhibitor890
ForteoParathyroid hormone analog1,271
GabapentinAnti-epileptic agent1,614
GilenyaSphingosine 1-phosphate receptor modulator1,280
HaloperidolTypical antipsychotic525
HumalogInsulin analog767
Humira2,608
IngrezzaVesicular monoamine transporter 2 inhibitor1,554
KesimptaCD20-directed cytolytic antibody741
LamictalAnti-epileptic agent755
LamotrigineAnti-epileptic agent921
LatudaAtypical antipsychotic570
Levetiracetam507
LithiumMood stabilizer841
Lithium carbonateMood stabilizer698
LorazepamBenzodiazepine680
Lyrica2,623
MethotrexateFolate analog metabolic inhibitor727
MetoclopramideDopamine-2 receptor antagonist1,723
Mirtazapine895
Morphine sulfateOpioid agonist548
Neurontin564
NuplazidAtypical antipsychotic1,224
OcrevusCD20-directed cytolytic antibody648
OlanzapineAtypical antipsychotic1,113
OmeprazoleProton pump inhibitor651
OtezlaPhosphodiesterase 4 inhibitor629
OxaliplatinPlatinum-based drug517
Oxycodone hydrochlorideOpioid agonist586
OxyContinOpioid agonist887
ParoxetineSerotonin reuptake inhibitor673
Paroxetine hydrochlorideSerotonin reuptake inhibitor605
PaxilSerotonin reuptake inhibitor1,130
PomalystThalidomide analog1,005
PrednisoneCorticosteroid1,198
Pregabalin834
QuetiapineAtypical antipsychotic1,186
Quetiapine fumarateAtypical antipsychotic501
RebifInterferon beta679
ReglanDopamine-2 receptor antagonist529
RemicadeTumor necrosis factor blocker1,002
RevlimidThalidomide analog2,427
RexultiAtypical antipsychotic543
RisperdalAtypical antipsychotic697
RisperidoneAtypical antipsychotic1,130
RituximabCD20-directed cytolytic antibody627
RytaryAromatic amino acid1,531
SeroquelAtypical antipsychotic1,337
SertralineSerotonin reuptake inhibitor1,512
SymbicortCorticosteroid666
Synthroidl-Thyroxine553
TacrolimusCalcineurin inhibitor immunosuppressant1,154
Tecfidera1,199
Tiotropium bromideAnticholinergic575
Tramadol688
TysabriIntegrin receptor antagonist2,431
VenlafaxineSerotonin and norepinephrine reuptake inhibitor762
Venlafaxine hydrochlorideSerotonin and norepinephrine reuptake inhibitor651
Vivitrol567
WellbutrinAminoketone524
XanaxBenzodiazepine512
XeljanzJanus kinase inhibitor536
XyremCentral nervous system depressant1,404
ZoloftSerotonin reuptake inhibitor778
ZyprexaAtypical antipsychotic666

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 37 pharmacologic classes with 1,000 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 Tremor name, in order of name
ClassReports with this term
Aminoketone2,238
Angiotensin 2 receptor blocker1,576
Anti-epileptic agent6,187
Anticholinergic1,740
Aromatic amino acid3,705
Atypical antipsychotic15,075
Benzodiazepine4,296
beta-Adrenergic blocker1,342
beta2-Adrenergic agonist1,351
Calcineurin inhibitor immunosuppressant2,170
CD20-directed cytolytic antibody2,786
Central nervous system depressant1,787
Central nervous system stimulant1,339
Corticosteroid6,111
Dopamine-2 receptor antagonist2,716
Fluoroquinolone antibacterial1,453
GLP-1 receptor agonist3,230
HMG-CoA reductase inhibitor1,531
Insulin analog3,169
Integrin receptor antagonist2,728
Interferon beta3,411
Janus kinase inhibitor1,027
Kinase inhibitor3,407
l-Thyroxine1,059
Mood stabilizer2,174
Nonsteroidal anti-inflammatory drug2,222
Opioid agonist6,076
Parathyroid hormone analog1,341
Partial cholinergic nicotinic agonist1,019
Potassium channel blocker1,097
Proton pump inhibitor2,470
Serotonin and norepinephrine reuptake inhibitor3,490
Serotonin reuptake inhibitor9,493
Sphingosine 1-phosphate receptor modulator1,550
Thalidomide analog3,809
Tumor necrosis factor blocker4,054
Vesicular monoamine transporter 2 inhibitor1,752

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

Reports by month

Reports that record Tremor, by month, five years to June 2026
05001,00020222023202420252026

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 Tremor
AgeReportsShareShare as a bar
Under 27450.5%
2 to 111,8921.2%
12 to 172,6131.6%
18 to 4425,63715.7%
45 to 6436,90722.6%
65 to 7421,32113.1%
75 and over17,03110.4%
Age not given57,11035%
Sex of the patient in the reports that record Tremor
SexReportsShareShare as a bar
Female98,79160.5%
Male51,77431.7%
Unknown or not given12,6917.8%

Age and sex are as the report gives them. 66% of these reports give the United States as the country.

Terms near this one

Official pages

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

In plain words: shaking. 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 .