Reported Reactions

Drugs › Guanylate Cyclase-C agonist

Generic name

Plecanatide: adverse event reports filed with FDA

1,019 reports list it as a suspect or interacting product, 2017–2026. Class: Guanylate Cyclase-C agonist.

1,019
reports as suspect product
0% of all reports · about 111 a year
67
reports, 12 months to June 2026
54 in the 12 months before
21.5%
marked serious by the reporter
20.3% across the class
4.6%
record death among outcomes, as reported
47 reports · not verified by FDA

Between May 2017 and June 2026, 1,019 adverse event reports received by FDA list plecanatide, a generic name as a suspect or interacting product. Reports that mention it only as a concomitant medication (976) are left out of every figure here.

In the 12 months to June 2026, 67 reports listed it, up 24% from 54 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 111 reports a year and 0% of the 20,646,523 reports in the database, and 6.2% of the reports for the guanylate Cyclase-C agonist class. How many people take it is not in the data, so a count is not a rate of occurrence.

The MedDRA terms listed most often are diarrhoea (30.4%), drug ineffective (10.7%) and constipation (9.8%). A report can list several reactions, so shares add to more than 100%; 183 different terms appear across these reports. Diarrhoea is recorded in 30.4% of these reports, about the same share as in the median guanylate Cyclase-C agonist drug (29.2%).

21.5% of the reports are marked serious by the reporter (20.3% across the class); 4.6% record death among the outcomes and 5.4% record hospitalisation, as reported. 72.1% of the reports came from consumers, and the largest patient age group is 65 to 74 (13.7%). 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: 10Aug 2021: 10Sep 2021: 16Oct 2021: 10Nov 2021: 10Dec 2021: 132022Jan 2022: 8Feb 2022: 3Mar 2022: 11Apr 2022: 6May 2022: 4Jun 2022: 4Jul 2022: 6Aug 2022: 5Sep 2022: 3Oct 2022: 6Nov 2022: 2Dec 2022: 52023Jan 2023: 6Feb 2023: 2Mar 2023: 10Apr 2023: 8May 2023: 8Jun 2023: 6Jul 2023: 9Aug 2023: 8Sep 2023: 6Oct 2023: 6Nov 2023: 6Dec 2023: 62024Jan 2024: 4Feb 2024: 4Mar 2024: 12Apr 2024: 7May 2024: 4Jun 2024: 5Jul 2024: 3Aug 2024: 4Sep 2024: 7Oct 2024: 5Nov 2024: 5Dec 2024: 12025Jan 2025: 7Feb 2025: 4Mar 2025: 5Apr 2025: 4May 2025: 2Jun 2025: 7Jul 2025: 8Aug 2025: 3Sep 2025: 5Oct 2025: 4Nov 2025: 7Dec 2025: 02026Jan 2026: 6Feb 2026: 0Mar 2026: 10Apr 2026: 4May 2026: 13Jun 2026: 7

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

0831662017: 14220172018: 16620182019: 14620192020: 13920202021: 12520212022: 6320222023: 8120232024: 6120242025: 5620252026: 402026

2026 covers reports received through June 2026 only.

Reactions recorded in the reports

share of Plecanatide reports recording the termmedian drug in guanylate cyclase-c agonist

  1. Diarrhoealoose or frequent stools30.4%310
  2. Drug ineffectivethe medicine did not work as expected10.7%109
  3. Constipationconstipation9.8%100
  4. Abdominal distensiona bloated abdomen8.6%88
  5. Abdominal painstomach or belly pain7.4%75
  6. Nauseafeeling sick7.4%75
  7. Abdominal pain upperupper stomach pain7.3%74
  8. Flatulencewind6%61
  9. Product use in unapproved indicationused for a purpose not on the label5%51
  10. Muscle spasmsmuscle cramps4.7%48
  11. Abdominal discomfortstomach discomfort4.5%46
  12. Dizzinesslight-headedness or unsteadiness3.9%40
  13. Deaththe patient died; cause not stated by this term3.8%39
  14. Product quality issuea problem with the product itself3.4%35
  15. Malaisegeneral feeling of being unwell3.2%33
  16. Fatiguetiredness3.1%32
  17. Headachehead pain3.1%32
  18. Astheniaweakness or lack of energy3%31
  19. Product use issuea problem in how the product was used3%31
  20. Painpain, site not specified2.6%27
  21. Patient dissatisfaction with treatment2.2%22
  22. Vomitingbeing sick2%20
  23. Dehydrationdehydration1.8%18
  24. Feeling abnormalfeeling odd or not right1.8%18
  25. Wrong technique in product usage processthe product was used in the wrong way1.8%18

Top 30 of 183 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 guanylate cyclase-c agonist 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

Death4.6%47
Life-threatening0.4%4
Hospitalisation (initial or prolonged)5.4%55
Disability0.8%8
Congenital anomaly0%0
Other serious11.9%121
Not serious78.5%800

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 16,496 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%0
2 to 110%0
12 to 170%0
18 to 446.1%62
45 to 6413.6%139
65 to 7413.7%140
75 and over10.4%106
Age not given56.1%572

Patient sex

Female52.7%537
Male16.1%164
Not given31.2%318

Who reported

Physician20.1%205
Pharmacist1.5%15
Other health professional6%61
Lawyer0%0
Consumer or non-health professional72.1%735
Not given0.3%3

Age and sex as stated in the report; the reporter's qualification is the primary source recorded by FDA. 99.5% of reports give the United States as the country of the event or reporter.

Reason for use recorded

Indication as recorded (MedDRA)ReportsShare
Constipation46145.2%
Irritable bowel syndrome19218.8%
Product use in unapproved indication50.5%
Diarrhoea30.3%
Gastrointestinal disorder20.2%
Gastrointestinal motility disorder20.2%

The indication field is filled in by the reporter and is often blank; shares are of all 1,019 reports.

Drugs most often listed in the same reports

Drug (any role in the report)ReportsShare of Plecanatide reports
MiraLAX747.3%
Linzess515%
Omeprazole302.9%
Gabapentin282.7%
Synthroid282.7%
Metoprolol272.6%
Lisinopril262.6%
Amitiza242.4%
Amlodipine232.3%
Atorvastatin232.3%

Other products listed in reports where Plecanatide 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

MeasurePlecanatideGuanylate Cyclase-C agonistAll reports
Reports as suspect product1,01916,49620,646,523
Share of that pool—6.2%0%
Reports, latest 12 months67—1,332,454
Marked serious21.5%20.3%57.4%
Death recorded among outcomes, per 1,000 reports462591
Hospitalisation recorded, per 1,000 reports5454213
Consumer-filed share72.1%80.7%45.8%
Top term, share of reportsDiarrhoea 30.4%median 29.2%3.1%

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."

Other drugs in the guanylate cyclase-c agonist class

DrugName typeReportsLatest 12 monthsMarked serious
Linzessbrand14,3461,03417.9%
Linaclotidegeneric1,13127448.9%

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 Plecanatide reports

How many adverse event reports has FDA received for Plecanatide?

1,019 reports list Plecanatide as a suspect or interacting product in the openFDA FAERS release of 28 Sep 2026, covering reports received through June 2026. 67 of them arrived in the latest 12 months. Another 976 list it only as a concomitant medication.

What reactions are recorded in Plecanatide reports?

diarrhoea (30.4%), drug ineffective (10.7%), constipation (9.8%), abdominal distension (8.6%) and abdominal pain (7.4%). 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 Plecanatide was responsible.

How serious are the reports?

21.5% are marked serious by the reporter. Among the outcomes recorded, 4.6% 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?

consumer or non-health professional (72.1%), physician (20.1%) and other health professional (6%). Most reports reach FDA through the manufacturer, which must forward reports it receives.

Are reports for Plecanatide rising?

67 reports in the 12 months to June 2026, up 24% from 54 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 Plecanatide 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 Plecanatide?

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 Plecanatide as a suspect or interacting product; reports listing it only as a concomitant medication (976) 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.