Reported Reactions

Drugs

Product name as reported

Stalevo: adverse event reports filed with FDA

2,753 reports list it as a suspect or interacting product, 2004–2026. Also reported as Stalevo /01530202/.

2,753
reports as suspect product
0% of all reports · about 125 a year
49
reports, 12 months to June 2026
42 in the 12 months before
93.5%
marked serious by the reporter
57.4% across all reports
16.2%
record death among outcomes, as reported
446 reports · not verified by FDA

Between June 2004 and June 2026, 2,753 adverse event reports received by FDA list the product name "Stalevo" as reporters wrote it as a suspect or interacting product. Reports that mention it only as a concomitant medication (2,473) are left out of every figure here.

In the 12 months to June 2026, 49 reports listed it, up 17% from 42 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 125 reports a year and 0% of the 20,646,523 reports in the database. How many people take it is not in the data, so a count is not a rate of occurrence.

Reporters most often recorded parkinson's disease (14%), fall (8.9%) and dysphagia (7%). A report can list several reactions, so shares add to more than 100%; 804 different terms appear across these reports. Parkinson's disease is recorded in 14% of these reports, against 0.1% of all reports in the database.

93.5% of the reports are marked serious by the reporter; 16.2% record death among the outcomes and 37.8% record hospitalisation, as reported. 41.4% of the reports came from consumers, and the largest patient age group is 75 and over (30.5%). 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

0816Jul 2021: 4Aug 2021: 8Sep 2021: 12Oct 2021: 3Nov 2021: 8Dec 2021: 12022Jan 2022: 3Feb 2022: 14Mar 2022: 8Apr 2022: 4May 2022: 5Jun 2022: 6Jul 2022: 4Aug 2022: 2Sep 2022: 6Oct 2022: 5Nov 2022: 16Dec 2022: 72023Jan 2023: 6Feb 2023: 4Mar 2023: 11Apr 2023: 7May 2023: 12Jun 2023: 4Jul 2023: 8Aug 2023: 7Sep 2023: 6Oct 2023: 3Nov 2023: 2Dec 2023: 82024Jan 2024: 5Feb 2024: 4Mar 2024: 16Apr 2024: 6May 2024: 8Jun 2024: 9Jul 2024: 6Aug 2024: 7Sep 2024: 3Oct 2024: 4Nov 2024: 6Dec 2024: 62025Jan 2025: 0Feb 2025: 1Mar 2025: 3Apr 2025: 3May 2025: 0Jun 2025: 3Jul 2025: 8Aug 2025: 1Sep 2025: 1Oct 2025: 7Nov 2025: 7Dec 2025: 22026Jan 2026: 3Feb 2026: 8Mar 2026: 3Apr 2026: 1May 2026: 3Jun 2026: 5

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

01763512004: 320042005: 42006: 42007: 120072008: 52009: 82010: 920102011: 112012: 1512013: 28420132014: 2922015: 3152016: 35120162017: 3052018: 2572019: 17820192020: 1832021: 952022: 8020222023: 782024: 802025: 3620252026: 23

2026 covers reports received through June 2026 only.

Reactions recorded in the reports

share of Stalevo reports recording the termall reports in the database

  1. Falla fall8.9%246
  2. Dysphagiadifficulty swallowing7%194
  3. Deaththe patient died; cause not stated by this term6.4%176
  4. Hallucinationseeing or hearing things that are not there6.2%171
  5. Tremorshaking6.2%170
  6. Dyskinesiainvoluntary movements5.8%160
  7. Wrong technique in product usage processthe product was used in the wrong way5.7%158
  8. Gait disturbancedifficulty walking5.4%150
  9. Confusional stateconfusion4.8%133
  10. Malaisegeneral feeling of being unwell4.3%118
  11. Weight decreasedweight loss3.6%99
  12. Pneumonialung infection3.5%97
  13. Astheniaweakness or lack of energy3.4%94
  14. Drug ineffectivethe medicine did not work as expected3.4%93
  15. Nauseafeeling sick3.3%90
  16. Depressionlow mood3.2%88
  17. Anxietyanxiety2.9%81
  18. Feeling abnormalfeeling odd or not right2.9%81
  19. Fatiguetiredness2.9%79
  20. Decreased appetitereduced appetite2.7%75
  21. Speech disordera speech problem2.6%71
  22. Agitationrestlessness2.5%68
  23. Dizzinesslight-headedness or unsteadiness2.4%67
  24. General physical health deteriorationgeneral decline in health2.4%67
  25. Musculoskeletal stiffnessstiffness in muscles or joints2.4%67
  26. Somnolencedrowsiness2.4%67
  27. Urinary tract infectionbladder or urinary infection2.4%66
  28. Dementiadementia2.4%65

Top 30 of 804 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 share of all reports in the database; 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

Death16.2%446
Life-threatening4.4%120
Hospitalisation (initial or prolonged)37.8%1,040
Disability4%109
Congenital anomaly0%0
Other serious54.4%1,498
Not serious6.5%179

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 20,646,523 reports. 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%3
2 to 110%0
12 to 170%0
18 to 441.3%36
45 to 6410.7%295
65 to 7419.7%543
75 and over30.5%840
Age not given37.6%1,036

Patient sex

Female44.1%1,215
Male50.3%1,385
Not given5.6%153

Who reported

Physician20.5%564
Pharmacist17%467
Other health professional13.9%382
Lawyer0.3%9
Consumer or non-health professional41.4%1,139
Not given7%192

Age and sex as stated in the report; the reporter's qualification is the primary source recorded by FDA. 10.2% of reports give the United States as the country of the event or reporter.

Reason for use recorded

Indication as recorded (MedDRA)ReportsShare
Parkinson's disease1,59257.8%
Parkinsonism552%
On and off phenomenon160.6%
Extrapyramidal disorder80.3%
Tremor60.2%
Dementia50.2%

The indication field is filled in by the reporter and is often blank; shares are of all 2,753 reports.

Drugs most often listed in the same reports

Drug (any role in the report)ReportsShare of Stalevo reports
Sinemet2017.3%
Azilect1896.9%
Neupro1565.7%
Omeprazole943.4%
Mirapex933.4%
Exelon812.9%
Pramipexole812.9%
Carbidopa levodopa762.8%
Levodopa762.8%
Amantadine622.3%

Other products listed in reports where Stalevo 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

MeasureStalevoAll reports
Reports as suspect product2,75320,646,523
Share of that pool—0%
Reports, latest 12 months491,332,454
Marked serious93.5%57.4%
Death recorded among outcomes, per 1,000 reports16291
Hospitalisation recorded, per 1,000 reports378213
Consumer-filed share41.4%45.8%
Top term, share of reportsParkinson's disease 14%0.1%

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."

Questions about Stalevo reports

How many adverse event reports has FDA received for Stalevo?

2,753 reports list Stalevo as a suspect or interacting product in the openFDA FAERS release of 28 Sep 2026, covering reports received through June 2026. 49 of them arrived in the latest 12 months. Another 2,473 list it only as a concomitant medication.

What reactions are recorded in Stalevo reports?

parkinson's disease (14%), fall (8.9%), dysphagia (7%), death (6.4%) and hallucination (6.2%). 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 Stalevo was responsible.

How serious are the reports?

93.5% are marked serious by the reporter. Among the outcomes recorded, 16.2% of reports include death and 37.8% 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?

consumer or non-health professional (41.4%), physician (20.5%) and pharmacist (17%). Most reports reach FDA through the manufacturer, which must forward reports it receives.

Are reports for Stalevo rising?

49 reports in the 12 months to June 2026, up 17% from 42 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 Stalevo 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 Stalevo?

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 Stalevo as a suspect or interacting product; reports listing it only as a concomitant medication (2,473) 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.