Reported Reactions

Drugs › Osmotic laxative

Brand name · Sodium sulfate, potassium sulfate, magnesium sulfate

SUPREP Bowel Prep: adverse event reports filed with FDA

3,664 reports list it as a suspect or interacting product, 2012–2026. Class: Osmotic laxative.

3,664
reports as suspect product
0% of all reports · about 265 a year
35
reports, 12 months to June 2026
42 in the 12 months before
9.1%
marked serious by the reporter
54.5% across the class
0.2%
record death among outcomes, as reported
9 reports · not verified by FDA

3,664 adverse event reports received by FDA list the brand name SUPREP Bowel Prep (sodium sulfate, potassium sulfate, magnesium sulfate) as a suspect or interacting product, from September 2012 to June 2026. A further 534 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, 35 reports listed it, down 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 265 reports a year and 0% of the 20,646,523 reports in the database, and 2.8% of the reports for the osmotic laxative 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 vomiting (42.8%), nausea (29.1%) and abdominal distension (10.3%). A report can list several reactions, so shares add to more than 100%; 250 different terms appear across these reports. Vomiting is recorded in 42.8% of these reports, a larger share than in the median osmotic laxative drug (3.8%).

9.1% of the reports are marked serious by the reporter (54.5% across the class); 0.2% record death among the outcomes and 3.1% record hospitalisation, as reported. 96% of the reports came from consumers, and the largest patient age group is 45 to 64 (34.2%). 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

0214428Jul 2021: 6Aug 2021: 9Sep 2021: 428Oct 2021: 6Nov 2021: 4Dec 2021: 22022Jan 2022: 4Feb 2022: 4Mar 2022: 5Apr 2022: 0May 2022: 3Jun 2022: 3Jul 2022: 4Aug 2022: 3Sep 2022: 256Oct 2022: 2Nov 2022: 1Dec 2022: 02023Jan 2023: 1Feb 2023: 1Mar 2023: 0Apr 2023: 1May 2023: 0Jun 2023: 1Jul 2023: 1Aug 2023: 2Sep 2023: 103Oct 2023: 0Nov 2023: 2Dec 2023: 12024Jan 2024: 2Feb 2024: 0Mar 2024: 1Apr 2024: 1May 2024: 0Jun 2024: 0Jul 2024: 2Aug 2024: 2Sep 2024: 33Oct 2024: 1Nov 2024: 1Dec 2024: 02025Jan 2025: 0Feb 2025: 0Mar 2025: 2Apr 2025: 0May 2025: 0Jun 2025: 1Jul 2025: 0Aug 2025: 1Sep 2025: 27Oct 2025: 1Nov 2025: 0Dec 2025: 22026Jan 2026: 1Feb 2026: 1Mar 2026: 1Apr 2026: 0May 2026: 0Jun 2026: 1

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

03106192012: 420122014: 172015: 3220152016: 4762017: 55420172018: 6192019: 54220192020: 4482021: 49320212022: 2852023: 11320232024: 432025: 3420252026: 4

2026 covers reports received through June 2026 only.

Reactions recorded in the reports

share of SUPREP Bowel Prep reports recording the termmedian drug in osmotic laxative

  1. Vomitingbeing sick42.8%1,567
  2. Nauseafeeling sick29.1%1,066
  3. Abdominal distensiona bloated abdomen10.3%379
  4. Abdominal painstomach or belly pain9.5%349
  5. Drug ineffectivethe medicine did not work as expected9.1%333
  6. Headachehead pain8.9%327
  7. Dizzinesslight-headedness or unsteadiness5.2%189
  8. Abdominal pain upperupper stomach pain4.7%173
  9. Wrong technique in product usage processthe product was used in the wrong way4.4%162
  10. Tremorshaking4%145
  11. Retching3.8%139
  12. Abdominal discomfortstomach discomfort3.4%125
  13. Chillschills or shivering3.2%116
  14. Astheniaweakness or lack of energy3%109
  15. Feeling coldfeeling cold2.5%91
  16. Dehydrationdehydration2.4%88
  17. Blood pressure increaseda raised blood pressure reading2.3%86
  18. Diarrhoealoose or frequent stools1.9%70
  19. Malaisegeneral feeling of being unwell1.9%70
  20. Hyperhidrosisexcessive sweating1.6%60
  21. Fatiguetiredness1.6%58
  22. Flatulencewind1.4%51
  23. Dysgeusiaaltered taste1.3%48
  24. Muscle spasmsmuscle cramps1.3%48
  25. Dyspepsiaindigestion1.3%47
  26. Palpitationsawareness of the heartbeat1.2%44
  27. Pruritusitching1.1%39

Top 30 of 250 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 17 drugs in the osmotic laxative 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

Death0.2%9
Life-threatening0.3%10
Hospitalisation (initial or prolonged)3.1%114
Disability0.5%17
Congenital anomaly0%0
Other serious5.8%214
Not serious90.9%3,330

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 129,514 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
2 to 110.1%2
12 to 170.1%4
18 to 446.7%247
45 to 6434.2%1,252
65 to 7426.8%981
75 and over12.6%460
Age not given19.6%717

Patient sex

Female74.1%2,714
Male25.2%923
Not given0.7%27

Who reported

Physician1.3%49
Pharmacist0.4%16
Other health professional1.3%48
Lawyer0%0
Consumer or non-health professional96%3,519
Not given0.9%32

Age and sex as stated in the report; the reporter's qualification is the primary source recorded by FDA. 98.3% of reports give the United States as the country of the event or reporter.

Reason for use recorded

Indication as recorded (MedDRA)ReportsShare
Colonoscopy3,36691.9%
Bowel preparation441.2%
Off label use230.6%
Endoscopy30.1%
Investigation20.1%
Surgery20.1%

The indication field is filled in by the reporter and is often blank; shares are of all 3,664 reports.

Drugs most often listed in the same reports

Drug (any role in the report)ReportsShare of SUPREP Bowel Prep reports
Aspirin421.1%
Lisinopril421.1%
Vitamin d391.1%
Ergocalciferol361%
Metformin351%
Omeprazole351%
Levothyroxine340.9%
Losartan340.9%
Atorvastatin310.8%
Amlodipine300.8%

Other products listed in reports where SUPREP Bowel Prep 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

MeasureSUPREP Bowel PrepOsmotic laxativeAll reports
Reports as suspect product3,664129,51420,646,523
Share of that pool—2.8%0%
Reports, latest 12 months35—1,332,454
Marked serious9.1%54.5%57.4%
Death recorded among outcomes, per 1,000 reports215291
Hospitalisation recorded, per 1,000 reports31286213
Consumer-filed share96%61%45.8%
Top term, share of reportsVomiting 42.8%median 3.8%2.2%

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 osmotic laxative class

DrugName typeReportsLatest 12 monthsMarked serious
MiraLAXbrand38,1881,7217.2%
Extranealbrand30,83073383.6%
Sodium chloridegeneric11,0441,38992.5%
Delflexbrand8,76567653.8%
Potassium chloridegeneric8,17251886.4%
DIANEAL PD-2 with Dextrosebrand7,17816188.6%
Polyethylene glycol 3350generic5,75072617.8%
Lactulosegeneric4,13335387.1%
Sodium bicarbonategeneric3,34230892.1%
Dulcolaxbrand2,89313763.8%
Sutabbrand1,51315112%
Bssbrand1,0474189.6%
DIANEAL Low Calcium with Dextrosebrand9702697.4%
Polyethylene glycolgeneric7605885.5%
Sodium bicarbonate, sodium chloridegeneric67529100%

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 SUPREP Bowel Prep reports

How many adverse event reports has FDA received for SUPREP Bowel Prep?

3,664 reports list SUPREP Bowel Prep as a suspect or interacting product in the openFDA FAERS release of 28 Sep 2026, covering reports received through June 2026. 35 of them arrived in the latest 12 months. Another 534 list it only as a concomitant medication.

What reactions are recorded in SUPREP Bowel Prep reports?

vomiting (42.8%), nausea (29.1%), abdominal distension (10.3%), abdominal pain (9.5%) and drug ineffective (9.1%). 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 SUPREP Bowel Prep was responsible.

How serious are the reports?

9.1% are marked serious by the reporter. Among the outcomes recorded, 0.2% of reports include death and 3.1% 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 (96%), physician (1.3%) and other health professional (1.3%). Most reports reach FDA through the manufacturer, which must forward reports it receives.

Are reports for SUPREP Bowel Prep rising?

35 reports in the 12 months to June 2026, down 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 SUPREP Bowel Prep 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 SUPREP Bowel Prep?

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 SUPREP Bowel Prep as a suspect or interacting product; reports listing it only as a concomitant medication (534) 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.