Reported Reactions

Drugs › Folate analog metabolic inhibitor

Brand name · Methotrexate

Rasuvo: adverse event reports filed with FDA

2,979 reports list it as a suspect or interacting product, 2015–2026. Class: Folate analog metabolic inhibitor.

2,979
reports as suspect product
0% of all reports · about 265 a year
91
reports, 12 months to June 2026
153 in the 12 months before
14.1%
marked serious by the reporter
83.5% across the class
0.8%
record death among outcomes, as reported
24 reports · not verified by FDA

Between April 2015 and April 2026, 2,979 adverse event reports received by FDA list the brand name Rasuvo (methotrexate) as a suspect or interacting product. Reports that mention it only as a concomitant medication (790) are left out of every figure here.

In the 12 months to June 2026, 91 reports listed it, down 41% from 153 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 265 reports a year and 0% of the 20,646,523 reports in the database, and 1% of the reports for the folate analog metabolic inhibitor class. How many people take it is not in the data, so a count is not a rate of occurrence.

Reporters most often recorded drug ineffective (9%), product dose omission issue (7%) and pain (5.8%). A report can list several reactions, so shares add to more than 100%; 440 different terms appear across these reports. Drug ineffective is recorded in 9% of these reports, about the same share as in the median folate analog metabolic inhibitor drug (8.5%).

14.1% of the reports are marked serious by the reporter (83.5% across the class); 0.8% record death among the outcomes and 5.4% record hospitalisation, as reported. 44.7% of the reports came from other health professionals, and the largest patient age group is 45 to 64 (30.2%). 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

056112Jul 2021: 8Aug 2021: 78Sep 2021: 19Oct 2021: 11Nov 2021: 20Dec 2021: 92022Jan 2022: 25Feb 2022: 17Mar 2022: 19Apr 2022: 11May 2022: 16Jun 2022: 5Jul 2022: 107Aug 2022: 13Sep 2022: 12Oct 2022: 4Nov 2022: 6Dec 2022: 142023Jan 2023: 8Feb 2023: 5Mar 2023: 7Apr 2023: 4May 2023: 8Jun 2023: 5Jul 2023: 88Aug 2023: 9Sep 2023: 3Oct 2023: 12Nov 2023: 6Dec 2023: 142024Jan 2024: 6Feb 2024: 8Mar 2024: 8Apr 2024: 8May 2024: 3Jun 2024: 5Jul 2024: 3Aug 2024: 112Sep 2024: 7Oct 2024: 2Nov 2024: 4Dec 2024: 52025Jan 2025: 4Feb 2025: 2Mar 2025: 1Apr 2025: 3May 2025: 5Jun 2025: 5Jul 2025: 5Aug 2025: 4Sep 2025: 64Oct 2025: 2Nov 2025: 4Dec 2025: 02026Jan 2026: 1Feb 2026: 3Mar 2026: 5Apr 2026: 3May 2026: 0Jun 2026: 0

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

03797582015: 6120152016: 1392017: 35320172018: 7582019: 49020192020: 2632021: 21520212022: 2492023: 16920232024: 1712025: 9920252026: 12

2026 covers reports received through June 2026 only.

Reactions recorded in the reports

share of Rasuvo reports recording the termmedian drug in folate analog metabolic inhibitor

  1. Drug ineffectivethe medicine did not work as expected9%269
  2. Product dose omission issuea dose was missed7%210
  3. Painpain, site not specified5.8%174
  4. Nauseafeeling sick5.8%172
  5. Arthralgiajoint pain5.3%159
  6. Malaisegeneral feeling of being unwell4.8%142
  7. Fatiguetiredness4.1%121
  8. Device issuea problem with the device3.9%116
  9. Off label useused for a purpose or in a way not on the label3.6%107
  10. Covid-19COVID-19 infection3.3%97
  11. Device malfunctionthe device did not work properly3.1%93
  12. Rheumatoid arthritisrheumatoid arthritis, an inflammatory joint disease3.1%93
  13. Alopeciahair loss3.1%91
  14. Pain in extremitypain in an arm or leg2.9%85
  15. Injection site haemorrhagebleeding where the injection was given2.8%84
  16. Injection site painpain where the injection was given2.7%80
  17. Diarrhoealoose or frequent stools2.6%78
  18. Device leakagethe device leaked2.5%74
  19. Headachehead pain2.5%74
  20. Device delivery system issuea problem with the delivery system2.4%72
  21. Injection site bruisingbruising where the injection was given2.3%70
  22. Joint swellinga swollen joint2.3%70
  23. Rashskin rash1.9%57
  24. Nasopharyngitisa cold1.8%55
  25. Device failurethe device failed1.8%53

Top 30 of 440 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 7 drugs in the folate analog metabolic inhibitor 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

Death0.8%24
Life-threatening0.2%5
Hospitalisation (initial or prolonged)5.4%160
Disability0.2%7
Congenital anomaly0%0
Other serious8.8%261
Not serious85.9%2,560

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 312,274 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 20.1%4
2 to 110.8%25
12 to 171.2%36
18 to 448.3%248
45 to 6430.2%899
65 to 7412.5%372
75 and over5.6%168
Age not given41.2%1,227

Patient sex

Female83.7%2,494
Male13.5%403
Not given2.8%82

Who reported

Physician6%178
Pharmacist7.2%214
Other health professional44.7%1,332
Lawyer0%0
Consumer or non-health professional36.5%1,087
Not given5.6%168

Age and sex as stated in the report; the reporter's qualification is the primary source recorded by FDA. 99.9% of reports give the United States as the country of the event or reporter.

Reason for use recorded

Indication as recorded (MedDRA)ReportsShare
Rheumatoid arthritis1,59753.6%
Psoriatic arthropathy1324.4%
Systemic lupus erythematosus571.9%
Arthritis551.8%
Psoriasis461.5%
Juvenile idiopathic arthritis210.7%

The indication field is filled in by the reporter and is often blank; shares are of all 2,979 reports.

Drugs most often listed in the same reports

Drug (any role in the report)ReportsShare of Rasuvo reports
Folic acid2538.5%
Humira2157.2%
Enbrel1735.8%
Xeljanz1214.1%
Prednisone1073.6%
Orencia742.5%
Methotrexate642.1%
Vitamin d521.7%
Methotrexate sodium481.6%
Aspirin471.6%

Other products listed in reports where Rasuvo 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

MeasureRasuvoFolate analog metabolic inhibitorAll reports
Reports as suspect product2,979312,27420,646,523
Share of that pool—1%0%
Reports, latest 12 months91—1,332,454
Marked serious14.1%83.5%57.4%
Death recorded among outcomes, per 1,000 reports810591
Hospitalisation recorded, per 1,000 reports54309213
Consumer-filed share36.5%16.6%45.8%
Top term, share of reportsDrug ineffective 9%median 8.5%6.3%

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 folate analog metabolic inhibitor class

DrugName typeReportsLatest 12 monthsMarked serious
Methotrexategeneric207,25911,50390.7%
Methotrexate sodiumgeneric67,4972,45861%
Pemetrexedgeneric18,4092,78598.7%
Alimtabrand11,27443289.8%
Pemetrexed disodiumgeneric2,94239798.9%
Otrexupbrand1,914389.8%

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 Rasuvo reports

How many adverse event reports has FDA received for Rasuvo?

2,979 reports list Rasuvo as a suspect or interacting product in the openFDA FAERS release of 28 Sep 2026, covering reports received through June 2026. 91 of them arrived in the latest 12 months. Another 790 list it only as a concomitant medication.

What reactions are recorded in Rasuvo reports?

drug ineffective (9%), product dose omission issue (7%), pain (5.8%), nausea (5.8%) and arthralgia (5.3%). 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 Rasuvo was responsible.

How serious are the reports?

14.1% are marked serious by the reporter. Among the outcomes recorded, 0.8% of reports include death and 5.4% 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 (44.7%), consumer or non-health professional (36.5%) and pharmacist (7.2%). Most reports reach FDA through the manufacturer, which must forward reports it receives.

Are reports for Rasuvo rising?

91 reports in the 12 months to June 2026, down 41% from 153 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 Rasuvo 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 Rasuvo?

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 Rasuvo as a suspect or interacting product; reports listing it only as a concomitant medication (790) 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.