Reported Reactions

Drugs › Cytoprotective agent

Generic name

Bleomycin sulfate: adverse event reports filed with FDA

2,591 reports list it as a suspect or interacting product, 2004–2026. Class: Cytoprotective agent. Also reported as Bleomycin Sulfate For Injection Usp, Bleomycin Sulfate For Injection.

2,591
reports as suspect product
0% of all reports · about 116 a year
104
reports, 12 months to June 2026
193 in the 12 months before
98.5%
marked serious by the reporter
98.2% across the class
27.6%
record death among outcomes, as reported
716 reports · not verified by FDA

2,591 adverse event reports received by FDA list bleomycin sulfate, a generic name as a suspect or interacting product, from February 2004 to June 2026. A further 260 reports list it only as a concomitant medication, and those are not counted in the figures on this page.

In the 12 months to June 2026, 104 reports listed it, down 46% from 193 in the 12 months before. FDA releases FAERS data quarterly, so the newest months are incomplete and grow in later releases. Over its reporting history that is about 116 reports a year and 0% of the 20,646,523 reports in the database, and 19.4% of the reports for the cytoprotective agent class. How many people take it is not in the data, so a count is not a rate of occurrence.

The reactions recorded most often are febrile neutropenia (10%), pulmonary toxicity (6.2%) and off label use (6.1%). A report can list several reactions, so shares add to more than 100%; 531 different terms appear across these reports. Febrile neutropenia is recorded in 10% of these reports, about the same share as in the median cytoprotective agent drug (10%).

98.5% of the reports are marked serious by the reporter (98.2% across the class); 27.6% record death among the outcomes and 32.8% record hospitalisation, as reported. 48.9% of the reports came from other health professionals, and the largest patient age group is 18 to 44 (33.6%). FDA states that "a causal relationship cannot be established between product and reactions listed in a report" and that for any given report "there is no certainty that a suspected drug caused the event."

Reports by month, five years

01631Jul 2021: 11Aug 2021: 4Sep 2021: 11Oct 2021: 17Nov 2021: 20Dec 2021: 252022Jan 2022: 6Feb 2022: 13Mar 2022: 13Apr 2022: 12May 2022: 10Jun 2022: 11Jul 2022: 18Aug 2022: 11Sep 2022: 9Oct 2022: 12Nov 2022: 25Dec 2022: 172023Jan 2023: 19Feb 2023: 13Mar 2023: 4Apr 2023: 6May 2023: 13Jun 2023: 14Jul 2023: 13Aug 2023: 9Sep 2023: 6Oct 2023: 12Nov 2023: 7Dec 2023: 92024Jan 2024: 22Feb 2024: 13Mar 2024: 9Apr 2024: 4May 2024: 19Jun 2024: 22Jul 2024: 18Aug 2024: 9Sep 2024: 19Oct 2024: 23Nov 2024: 31Dec 2024: 192025Jan 2025: 22Feb 2025: 4Mar 2025: 19Apr 2025: 13May 2025: 9Jun 2025: 7Jul 2025: 23Aug 2025: 12Sep 2025: 12Oct 2025: 3Nov 2025: 7Dec 2025: 122026Jan 2026: 11Feb 2026: 4Mar 2026: 2Apr 2026: 5May 2026: 11Jun 2026: 2

Reports by the month FDA received them. FDA releases FAERS data quarterly, so the newest months are incomplete and grow in later releases.

By year received

01523042004: 2520042005: 302006: 272007: 1620072008: 1542009: 1452010: 14420102011: 3042012: 3032013: 4020132014: 212015: 342016: 5420162017: 582018: 1112019: 19720192020: 1392021: 1212022: 15720222023: 1252024: 2082025: 14320252026: 35

2026 covers reports received through June 2026 only.

Reactions recorded in the reports

share of Bleomycin sulfate reports recording the termmedian drug in cytoprotective agent

  1. Febrile neutropeniafever with low white blood cells10%259
  2. Off label useused for a purpose or in a way not on the label6.1%159
  3. Neutropenialow neutrophils, a type of white blood cell5.5%143
  4. Pyrexiafever3.8%99
  5. Vomitingbeing sick3.6%93
  6. Sepsisa severe body-wide response to infection3.5%91
  7. Nauseafeeling sick3.5%90
  8. Anaemialow red blood cells3.2%82
  9. Respiratory failurethe lungs could not supply enough oxygen2.8%73
  10. Hepatitis B reactivation2.7%71
  11. Interstitial lung diseasescarring or inflammation of lung tissue2.7%71
  12. Toxicity to various agentspoisoning or toxic effect of one or more substances2.6%67
  13. Thrombocytopenialow platelets2.5%66
  14. Pancytopenialow counts of all blood cells2.3%60
  15. Deaththe patient died; cause not stated by this term2.3%59
  16. Fatiguetiredness2%52
  17. Product use in unapproved indicationused for a purpose not on the label2%51
  18. Dyspnoeashortness of breath1.9%50
  19. Blood pressure decreaseda low blood pressure reading1.9%49
  20. Infectionan infection, type not specified1.7%45

Top 30 of 531 MedDRA preferred terms recorded across these reports, with a plain-language gloss where one is available. One report can record several terms. The hollow bar is the median share across the 3 drugs in the cytoprotective agent class; it describes the reports, not the patients. FDA states that adverse event reports "represent a small percentage of total usage numbers of a product", that "common products may have a higher number of adverse events due to the higher total number of people using the product", and that the data "by themselves are not an indicator of the safety profile of the drug or biologic."

Outcomes recorded

Death27.6%716
Life-threatening8.9%230
Hospitalisation (initial or prolonged)32.8%851
Disability2.2%58
Congenital anomaly0.3%8
Other serious62.1%1,610
Not serious1.5%39

Outcome flags as the reporter set them; a report can carry several, and "other serious" is FDA's own category for serious reports outside the named outcomes. Grey bar: all 13,325 reports in the class. FDA has not verified any outcome and states that the reports "cannot be used to estimate the incidence of these events."

Patients and reporters

Patient age

Under 20.8%21
2 to 112.4%61
12 to 175.2%134
18 to 4433.6%870
45 to 6413.9%359
65 to 746.8%177
75 and over1.5%40
Age not given35.9%929

Patient sex

Female27.6%715
Male45.5%1,179
Not given26.9%697

Who reported

Physician30.6%793
Pharmacist5.8%151
Other health professional48.9%1,266
Lawyer0%1
Consumer or non-health professional8.3%216
Not given6.3%164

Age and sex as stated in the report; the reporter's qualification is the primary source recorded by FDA. 23.4% of reports give the United States as the country of the event or reporter.

Reason for use recorded

Indication as recorded (MedDRA)ReportsShare
Hodgkin's disease55821.5%
Hodgkin's disease39315.2%
Testis cancer1596.1%
Non-hodgkin's lymphoma873.4%
Germ cell cancer532%
Diffuse large b-cell lymphoma361.4%

The indication field is filled in by the reporter and is often blank; shares are of all 2,591 reports.

Drugs most often listed in the same reports

Drug (any role in the report)ReportsShare of Bleomycin sulfate reports
Etoposide1,25648.5%
Doxorubicin hydrochloride1,04740.4%
Cyclophosphamide82331.8%
Dacarbazine74028.6%
Cisplatin72528%
Prednisone61723.8%
Vincristine sulfate50119.3%
Vinblastine sulfate45117.4%
Vinblastine41015.8%
Vincristine39615.3%

Other products listed in reports where Bleomycin sulfate is a suspect product, whatever their own role. Co-listing means the two were recorded together; it says nothing about either product's part in the event. Only the 2,500 most-reported names are counted here.

In context

MeasureBleomycin sulfateCytoprotective agentAll reports
Reports as suspect product2,59113,32520,646,523
Share of that pool—19.4%0%
Reports, latest 12 months104—1,332,454
Marked serious98.5%98.2%57.4%
Death recorded among outcomes, per 1,000 reports27622891
Hospitalisation recorded, per 1,000 reports328368213
Consumer-filed share8.3%4.9%45.8%
Top term, share of reportsFebrile neutropenia 10%median 10%0.3%

Shares are of reports, not of patients treated. The number of people taking a product is not in the data, so none of these figures is a rate, and differences between columns reflect who takes a product, who reports and how long it has been sold. FDA states that adverse event reports "represent a small percentage of total usage numbers of a product", that "common products may have a higher number of adverse events due to the higher total number of people using the product", and that the data "by themselves are not an indicator of the safety profile of the drug or biologic."

Other drugs in the cytoprotective agent class

DrugName typeReportsLatest 12 monthsMarked serious
Bleomycingeneric6,34135298%
Mesnageneric4,39332598.3%

Ordered by report count for navigation only. FDA states that adverse event reports "represent a small percentage of total usage numbers of a product", that "common products may have a higher number of adverse events due to the higher total number of people using the product", and that the data "by themselves are not an indicator of the safety profile of the drug or biologic." A brand and its generic are separate rows because reporters name them separately.

Questions about Bleomycin sulfate reports

How many adverse event reports has FDA received for Bleomycin sulfate?

2,591 reports list Bleomycin sulfate as a suspect or interacting product in the openFDA FAERS release of 28 Sep 2026, covering reports received through June 2026. 104 of them arrived in the latest 12 months. Another 260 list it only as a concomitant medication.

What reactions are recorded in Bleomycin sulfate reports?

febrile neutropenia (10%), pulmonary toxicity (6.2%), off label use (6.1%), neutropenia (5.5%) and acute myeloid leukaemia (3.9%). These are MedDRA preferred terms coded from what the reporter described; a report can list several, and a term's presence is not a finding that Bleomycin sulfate was responsible.

How serious are the reports?

98.5% are marked serious by the reporter. Among the outcomes recorded, 27.6% of reports include death and 32.8% include hospitalisation. FDA has not verified these outcomes and states that the reports "cannot be used to estimate the incidence" of the events.

Who files these reports?

other health professional (48.9%), physician (30.6%) and consumer or non-health professional (8.3%). Most reports reach FDA through the manufacturer, which must forward reports it receives.

Are reports for Bleomycin sulfate rising?

104 reports in the 12 months to June 2026, down 46% from 193 in the 12 months before. FDA releases FAERS data quarterly, so the newest months are incomplete and grow in later releases. Counts also move with how many people take a product, its time on the market and publicity.

Do these reports show that Bleomycin sulfate was responsible for these reactions?

No. FDA states that "a causal relationship cannot be established between product and reactions listed in a report" and that for any given report "there is no certainty that a suspected drug caused the event." The reaction may relate to the condition being treated, to other medicines, or to something else.

Is this a list of the side effects of Bleomycin sulfate?

No. It is a count of what was reported to FDA. The adverse reactions observed in clinical studies are printed on the FDA-approved label, which a pharmacist or clinician can go through with you.

How do I report an adverse event?

Consumers and health professionals can report to FDA through MedWatch (Form FDA 3500 online, or 1-800-FDA-1088), or to the manufacturer, which must pass reports on. See the guide on how to report.

Where this comes from. Counts are built from the openFDA Drug Adverse Event (FAERS) bulk export released 28 Sep 2026, which holds reports FDA received through 30 Jun 2026. Drug names are as reported, resolved to the brand or generic name on the FDA label where openFDA's harmonisation matched them; classes are the pharmacologic class (EPC) from the label and the National Drug Code Directory of 17 Sep 2026. A report counts here when it lists Bleomycin sulfate as a suspect or interacting product; reports listing it only as a concomitant medication (260) are excluded. No report narrative, lot number, patient detail or reporter identity is published. See the methodology and sources; FDA's record is authoritative, and corrections are handled within five working days.

Drug data (FAERS) through 30 Jun 2026; device data (MAUDE) through 31 Aug 2026. Not medical advice.