Body temperature decreased 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 2 Oct 2026. The data have the reports that FDA received through 30 Jun 2026.

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 2 Oct 2026.

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 2 Oct 2026.

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 9,759 adverse event reports that record the MedDRA preferred term Body temperature decreased. The person who codes a report selects the term that agrees best with the description of the reporter.

FDA received 319 reports in the 12 months to June 2026 and 363 in the 12 months before. FDA releases FAERS data every quarter, so the newest months are not complete. They grow in later releases.

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 1 Oct 2026. Reports received through 30 Jun 2026.

Drugs in these reports

The table has the 111 drug pages with 25 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 2 Oct 2026.

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 11 Mar 2026. The site read the page on 2 Oct 2026.

Drugs that the reports with the term Body temperature decreased name as a suspect product, in order of name
Drug	Class	Reports with this term
Abatacept	Selective T cell costimulation modulator	25
Acetaminophen		58
Actemra	Interleukin-6 receptor antagonist	535
Afinitor	Kinase inhibitor	159
Amlodipine	Calcium channel blocker	135
Amlodipine Besilate		27
Amlodipine besylate	Dihydropyridine calcium channel blocker	29
Amoxicillin	Penicillin-class antibacterial	35
Arava	Antirheumatic agent	27
Atenolol	beta-Adrenergic blocker	33
Atorvastatin		95
Atorvastatin calcium	HMG-CoA reductase inhibitor	70
Avastin	Vascular endothelial growth factor inhibitor	54
Avonex	Interferon beta	40
Benadryl	Histamine-1 receptor antagonist	49
Bevacizumab	Vascular endothelial growth factor inhibitor	46
Bisoprolol	beta-Adrenergic blocker	72
Capecitabine	Nucleoside metabolic inhibitor	64
Carboplatin	Platinum-based drug	57
Celebrex	Nonsteroidal anti-inflammatory drug	39
Ciprofloxacin	Fluoroquinolone antibacterial	49
Clonazepam	Benzodiazepine	71
Clozaril	Atypical antipsychotic	47
Codeine		83
Codeine phosphate		46
Cortisone	Corticosteroid	31
Cosentyx	Interleukin-17A antagonist	204
Cyclophosphamide	Alkylating drug	42
Desoximetasone	Corticosteroid	42
Dexamethasone	Corticosteroid	25
Diclofenac sodium	Nonsteroidal anti-inflammatory drug	37
Diltiazem		41
Diphenhydramine	Histamine-1 receptor antagonist	34
Eliquis	Factor Xa inhibitor	33
Enbrel	Tumor necrosis factor blocker	101
Erelzi		33
Ergocalciferol	Provitamin D2 compound	101
Fentanyl	Opioid agonist	35
Fluorouracil	Nucleoside metabolic inhibitor	25
Folic acid		37
Fosamax	Bisphosphonate	38
Furosemide	Loop diuretic	29
Gabapentin	Anti-epileptic agent	35
Gilenya	Sphingosine 1-phosphate receptor modulator	34
Human immunoglobulin g	Human immunoglobulin G	27
Humira		126
Hydroxychloroquine sulfate	Antimalarial	37
Ibuprofen	Nonsteroidal anti-inflammatory drug	67
Inflectra	Tumor necrosis factor blocker	495
Infliximab	Tumor necrosis factor blocker	471
Infliximab Recombinant		46
Kadcyla		38
Leflunomide	Antirheumatic agent	121
Levofloxacin	Fluoroquinolone antibacterial	30
Lipitor	HMG-CoA reductase inhibitor	38
Lyrica		40
Metformin	Biguanide	243
Metformin hcl	Biguanide	58
Metformin hydrochloride	Biguanide	59
Methotrexate	Folate analog metabolic inhibitor	470
Methotrexate sodium	Folate analog metabolic inhibitor	80
Methylprednisolone sodium succinate	Corticosteroid	42
Metoprolol	beta-Adrenergic blocker	131
Metoprolol tartrate	beta-Adrenergic blocker	41
Montelukast	Leukotriene receptor antagonist	52
Montelukast sodium	Leukotriene receptor antagonist	31
Morphine	Opioid agonist	63
Morphine sulfate	Opioid agonist	98
Mycophenolate mofetil	Antimetabolite immunosuppressant	42
Naproxen	Nonsteroidal anti-inflammatory drug	58
Ocrevus	CD20-directed cytolytic antibody	25
Octreotide	Somatostatin analog	27
Octreotide acetate	Somatostatin analog	27
Olanzapine	Atypical antipsychotic	26
Omalizumab	Anti-IgE	296
Orencia	Selective T cell costimulation modulator	60
Pantoprazole	Proton pump inhibitor	220
Pantoprazole sodium	Proton pump inhibitor	37
Prednisone	Corticosteroid	196
Pregabalin		76
Quetiapine	Atypical antipsychotic	35
Ramipril	Angiotensin converting enzyme inhibitor	111
Remicade	Tumor necrosis factor blocker	157
Rituxan	CD20-directed cytolytic antibody	166
Rituximab	CD20-directed cytolytic antibody	508
Rosuvastatin	HMG-CoA reductase inhibitor	62
Rosuvastatin calcium	HMG-CoA reductase inhibitor	40
Sandostatin	Somatostatin analog	846
Sandostatin LAR Depot		992
Simponi	Tumor necrosis factor blocker	40
Sulfasalazine	Aminosalicylate	46
Sutent	Kinase inhibitor	29
Synthroid	l-Thyroxine	54
Tamoxifen		30
Taxol		52
Taxotere		36
Tecfidera		28
Temodal		41
Trastuzumab	HER2/neu receptor antagonist	49
Tylenol	Expectorant	27
Tysabri	Integrin receptor antagonist	47
Valsartan	Angiotensin 2 receptor blocker	39
Vedolizumab	Integrin receptor antagonist	132
Venlafaxine	Serotonin and norepinephrine reuptake inhibitor	27
Venlafaxine hydrochloride	Serotonin and norepinephrine reuptake inhibitor	25
Vinorelbine tartrate		30
Vitamin B12		25
Xeljanz	Janus kinase inhibitor	29
Xeloda	Nucleoside metabolic inhibitor	39
Xolair	Anti-IgE	619
Zometa		51

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 41 pharmacologic classes with 50 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 2 Oct 2026.

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 11 Mar 2026. The site read the page on 2 Oct 2026.

Pharmacologic classes of the drugs that the reports with the term Body temperature decreased name, in order of name
Class	Reports with this term
Aminosalicylate	50
Angiotensin 2 receptor blocker	140
Angiotensin converting enzyme inhibitor	133
Anti-epileptic agent	86
Anti-IgE	915
Antimalarial	75
Antimetabolite immunosuppressant	56
Antirheumatic agent	148
Atypical antipsychotic	228
Benzodiazepine	129
beta-Adrenergic blocker	303
Biguanide	360
Bisphosphonate	118
Calcium channel blocker	152
CD20-directed cytolytic antibody	731
Corticosteroid	424
Factor Xa inhibitor	65
Fluoroquinolone antibacterial	95
Folate analog metabolic inhibitor	566
HER2/neu receptor antagonist	73
Histamine-1 receptor antagonist	124
HMG-CoA reductase inhibitor	220
Human immunoglobulin G	50
Integrin receptor antagonist	197
Interleukin-17A antagonist	204
Interleukin-6 receptor antagonist	559
Kinase inhibitor	322
l-Thyroxine	66
Leukotriene receptor antagonist	93
Nonsteroidal anti-inflammatory drug	273
Nucleoside metabolic inhibitor	150
Opioid agonist	342
Platinum-based drug	90
Proton pump inhibitor	311
Provitamin D2 compound	103
Selective T cell costimulation modulator	85
Serotonin and norepinephrine reuptake inhibitor	124
Serotonin reuptake inhibitor	82
Somatostatin analog	910
Tumor necrosis factor blocker	1,312
Vascular endothelial growth factor inhibitor	102

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

Reports by month

Reports that record Body temperature decreased, by month, five years to June 2026

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 Body temperature decreased
Age	Reports	Share
Under 2	123	1.3%
2 to 11	193	2%
12 to 17	127	1.3%
18 to 44	1,325	13.6%
45 to 64	3,017	30.9%
65 to 74	1,573	16.1%
75 and over	1,079	11.1%
Age not given	2,322	23.8%

Sex of the patient in the reports that record Body temperature decreased
Sex	Reports	Share
Female	5,024	51.5%
Male	3,517	36%
Unknown or not given	1,218	12.5%

Age and sex are as the report gives them. 25.5% of these reports give the United States as the country.

Terms near this one

These are the next terms in the A to Z list. The links are for navigation.

Official pages

MedWatch Online Voluntary Reporting FormThe online form of FDA for a voluntary report.
MedWatch: The FDA Safety Information and Adverse Event Reporting ProgramThe page of the FDA program that receives reports about drugs and devices.
FDA Adverse Event Monitoring System (AEMS) Public DashboardThe public dashboard of FDA for adverse event reports on drugs and biologics.

The site checked these addresses on 2 Oct 2026. The links open in a new tab.

Cite this page

Reported Reactions. Body temperature decreased: adverse event reports that record this term. https://reportedreactions.com/reaction/body-temperature-decreased/ Source: U.S. Food and Drug Administration, openFDA Drug Adverse Event (FAERS) files, release of 1 Oct 2026. Reports received through 30 Jun 2026.

Where the data come from

The counts come from the openFDA Drug Adverse Event (FAERS) bulk files, release of 1 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 Oct 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 Body temperature decreased 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 2 Oct 2026.

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 2 Oct 2026.

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 2 Oct 2026.

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