Cytarabine
According to the FDA label: Cytarabine in combination with other approved anticancer drugs is indicated for remission induction in acute non-lymphocytic leukemia of adults and children. It has also been found useful in the treatment of acute lymphocytic leukemia and the blast phase of chronic myelocytic leukemia. Intrathecal administration of cytarabine is indicated in the prophylaxis and treatment of meningeal leukemia.
58,627 adverse event reports submitted to the FDA (1999–2026)
Top Reported Adverse Events
The most frequently reported events in association with Cytarabine in the FAERS database. These are events reported by patients taking this medication, not necessarily caused by it. A single report may include multiple events.
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Febrile Neutropenia 7,494 reports
A fever occurring together with a low level of neutrophils, a type of infection-fighting white blood cell. It is taken seriously because infection is harder to fight when these cells are low.
Full definition in the glossary →Off Label Use 4,977 reports
Using a medication for a condition or in a way that the FDA has not officially approved. This is common and often legal, and a report of it does not mean something went wrong. Doctors sometimes prescribe drugs off label based on their judgment.
Full definition in the glossary →Pyrexia 4,092 reports
The medical term for fever, meaning a raised body temperature.
Full definition in the glossary → See all drugs reporting this event →Neutropenia 3,636 reports
A low level of neutrophils, a type of white blood cell that fights infection.
Full definition in the glossary →Drug Ineffective 3,109 reports
A report that the medication did not work as expected for the person taking it. This is a reporting category, not a sign the drug is defective. It simply means someone felt it was not helping their condition.
Full definition in the glossary →Sepsis 2,921 reports
A serious, body-wide response to an infection that can become life threatening and needs urgent care.
Full definition in the glossary →Thrombocytopenia 2,897 reports
A low level of platelets, the blood cells that help with clotting.
Full definition in the glossary →Disease Progression 2,733 reports
A report that the underlying condition being treated got worse over time. This describes the course of the illness, not necessarily an effect of the drug.
Full definition in the glossary →Pneumonia 2,300 reports
An infection that inflames the air sacs in the lungs, which can cause cough, fever, and difficulty breathing.
Full definition in the glossary →Myelosuppression 2,088 reports
A decrease in the bone marrow's production of blood cells, which can lower red cells, white cells, and platelets. Common with some cancer treatments.
Full definition in the glossary →Pancytopenia 2,086 reports
A shortage of all three main types of blood cells (red cells, white cells, and platelets) at the same time.
Full definition in the glossary →Death 2,027 reports
A report that the person died. A death appearing in reports for a drug does not mean the drug caused it. Reports record that a death occurred while the medication was being used, which can happen for many unrelated reasons.
Full definition in the glossary →Septic Shock 1,852 reports
A life-threatening drop in blood pressure caused by a severe infection. It needs urgent medical care.
Full definition in the glossary →Nausea 1,833 reports
The feeling of sickness in your stomach that often comes before vomiting.
Full definition in the glossary → See all drugs reporting this event →Infection 1,817 reports
A general report of an infection, used when no more specific type is given.
Full definition in the glossary →
Ranked by frequency of reports, not severity. The most-reported event is not necessarily the most dangerous or the most common in patients taking this drug.
Who Is Reporting
Demographics of patients in FAERS reports that included this information. Not all reports include patient demographics.
By Sex
View reporter sex data as a table
| Sex | Reports |
|---|---|
| Male | 27,768 |
| Female | 20,096 |
| Unknown | 609 |
By Age Group
View age group data as a table
| Age group | Reports |
|---|---|
| 0-17 | 11,425 |
| 18-34 | 5,914 |
| 35-49 | 6,444 |
| 50-64 | 10,462 |
| 65-74 | 5,943 |
| 75+ | 1,524 |
This shows who filed reports, reflecting who takes this drug and who tends to report, not who is at greatest risk.
Reported Outcomes
Outcomes recorded in FAERS reports that included Cytarabine. A single report may involve multiple reactions, each with a different outcome. These categories are defined by FDA reporting guidelines, not by PillSignal.
View outcome data as a table
| Outcome | Reports |
|---|---|
| Other Serious | 36,342 |
| Hospitalization | 23,914 |
| Death | 13,478 |
| Life-Threatening | 6,337 |
| Non-Serious | 1,506 |
| Disability | 1,039 |
Serious outcomes are far more likely to be reported than mild ones, so this overstates how often outcomes are serious. A recorded death does not mean the drug caused it.
Report Volume Over Time
Number of FAERS reports received per quarter for Cytarabine. Changes in volume may reflect shifts in prescribing rates, media attention, or reporting behavior, not changes in the medication's safety profile.
View report trend as a table
| Year | Reports |
|---|---|
| 1999 | 1 |
| 2003 | 1 |
| 2004 | 434 |
| 2005 | 805 |
| 2006 | 684 |
| 2007 | 883 |
| 2008 | 915 |
| 2009 | 985 |
| 2010 | 1,100 |
| 2011 | 1,585 |
| 2012 | 1,777 |
| 2013 | 1,408 |
| 2014 | 1,587 |
| 2015 | 2,038 |
| 2016 | 1,913 |
| 2017 | 3,162 |
| 2018 | 4,823 |
| 2019 | 4,035 |
| 2020 | 4,389 |
| 2021 | 4,617 |
| 2022 | 5,483 |
| 2023 | 5,672 |
| 2024 | 5,016 |
| 2025 | 4,396 |
| 2026 (partial) | 918 |
The steep increase around 2004 reflects the FDA's move to electronic submission, not a change in this drug's safety. Trends track reporting volume, not risk.
Medications commonly reported with Cytarabine
In FDA adverse event reports that mention Cytarabine, these medications appeared most often in the same report.
- Methotrexate (25,080 reports)
- Cyclophosphamide (21,881 reports)
- Cyclophosphamide For (21,881 reports)
- Dexamethasone (17,936 reports)
- Etoposide (15,030 reports)
This reflects co-occurrence in submitted reports, not evidence of drug interaction or combined risk. People often report several medications taken for the same condition or for unrelated reasons. Talk to a doctor or pharmacist about your specific medications.
Related Drugs
Other medications with similar adverse event profiles in FDA FAERS reports.
Data Source
This data is sourced from the FDA's Adverse Event Monitoring System (AEMS), formerly FAERS, via the OpenFDA API. PillSignal is not affiliated with the FDA.
View this data on the FDA website →Data last updated: June 2026