Reported Reactions

Drugs › Anticholinergic

Brand name · Diphenoxylate hydrochloride and atropine sulfate

Lomotil: adverse event reports filed with FDA

836 reports list it as a suspect or interacting product, 2004–2026. Class: Anticholinergic. Also reported as Lomotil /00034001/, Lomotil /00384302/.

836
reports as suspect product
0% of all reports · about 37 a year
15
reports, 12 months to June 2026
58 in the 12 months before
55.7%
marked serious by the reporter
39.6% across the class
3.2%
record death among outcomes, as reported
27 reports · not verified by FDA

Between February 2004 and May 2026, 836 adverse event reports received by FDA list the brand name Lomotil (diphenoxylate hydrochloride and atropine sulfate) as a suspect or interacting product. Reports that mention it only as a concomitant medication (13,075) are left out of every figure here.

In the 12 months to June 2026, 15 reports listed it, down 74% from 58 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 37 reports a year and 0% of the 20,646,523 reports in the database, and 0.5% of the reports for the anticholinergic 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 (37.7%), diarrhoea (19%) and macular degeneration (17.2%). A report can list several reactions, so shares add to more than 100%; 321 different terms appear across these reports. Drug ineffective is recorded in 37.7% of these reports, a larger share than in the median anticholinergic drug (9.2%).

55.7% of the reports are marked serious by the reporter (39.6% across the class); 3.2% record death among the outcomes and 27% record hospitalisation, as reported. 45.5% of the reports came from consumers, and the largest patient age group is 65 to 74 (21.5%). 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

0612Jul 2021: 6Aug 2021: 2Sep 2021: 6Oct 2021: 7Nov 2021: 2Dec 2021: 22022Jan 2022: 0Feb 2022: 7Mar 2022: 6Apr 2022: 8May 2022: 1Jun 2022: 0Jul 2022: 1Aug 2022: 12Sep 2022: 5Oct 2022: 2Nov 2022: 4Dec 2022: 22023Jan 2023: 2Feb 2023: 5Mar 2023: 2Apr 2023: 4May 2023: 4Jun 2023: 2Jul 2023: 4Aug 2023: 2Sep 2023: 3Oct 2023: 5Nov 2023: 7Dec 2023: 22024Jan 2024: 6Feb 2024: 2Mar 2024: 3Apr 2024: 8May 2024: 5Jun 2024: 5Jul 2024: 1Aug 2024: 3Sep 2024: 5Oct 2024: 9Nov 2024: 3Dec 2024: 42025Jan 2025: 1Feb 2025: 9Mar 2025: 11Apr 2025: 7May 2025: 3Jun 2025: 2Jul 2025: 3Aug 2025: 3Sep 2025: 2Oct 2025: 1Nov 2025: 0Dec 2025: 22026Jan 2026: 0Feb 2026: 0Mar 2026: 2Apr 2026: 1May 2026: 1Jun 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

0511022004: 520042005: 132006: 102007: 1320072008: 102009: 82010: 3220102011: 142012: 372013: 1520132014: 322015: 522016: 5020162017: 1022018: 522019: 8620192020: 682021: 452022: 4820222023: 422024: 542025: 4420252026: 4

2026 covers reports received through June 2026 only.

Reactions recorded in the reports

share of Lomotil reports recording the termmedian drug in anticholinergic

  1. Drug ineffectivethe medicine did not work as expected37.7%315
  2. Diarrhoealoose or frequent stools19%159
  3. Macular degenerationa disease of the central retina17.2%144
  4. Nauseafeeling sick14.8%124
  5. Weight decreasedweight loss13.9%116
  6. Constipationconstipation13.8%115
  7. Abdominal painstomach or belly pain12%100
  8. Off label useused for a purpose or in a way not on the label11.7%98
  9. Malaisegeneral feeling of being unwell11.1%93
  10. Pyrexiafever10.4%87
  11. Painpain, site not specified10.3%86
  12. Headachehead pain9.7%81
  13. Dyspepsiaindigestion9.3%78
  14. Anaemialow red blood cells9.1%76
  15. Chronic sinusitis8.7%73
  16. Infusion related reactiona reaction during or soon after an infusion8.7%73
  17. Procedural painpain from a procedure8.5%71
  18. Colitisinflamed bowel7.7%64
  19. Erythemaskin redness7.5%63
  20. Haematocheziablood in the stool7.5%63
  21. Proctitis7.5%63
  22. Female genital tract fistula7.2%60
  23. Oral candidiasisoral thrush7.1%59
  24. Radiculopathy7.1%59

Top 30 of 321 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 24 drugs in the anticholinergic 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

Death3.2%27
Life-threatening0.6%5
Hospitalisation (initial or prolonged)27%226
Disability3.1%26
Congenital anomaly0.1%1
Other serious43.2%361
Not serious44.3%370

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 159,807 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 20.2%2
2 to 110.7%6
12 to 170%0
18 to 447.5%63
45 to 6416.9%141
65 to 7421.5%180
75 and over9.6%80
Age not given43.5%364

Patient sex

Female65.8%550
Male25.8%216
Not given8.4%70

Who reported

Physician17.5%146
Pharmacist3.8%32
Other health professional29.2%244
Lawyer0.8%7
Consumer or non-health professional45.5%380
Not given3.2%27

Age and sex as stated in the report; the reporter's qualification is the primary source recorded by FDA. 72.7% of reports give the United States as the country of the event or reporter.

Reason for use recorded

Indication as recorded (MedDRA)ReportsShare
Diarrhoea22727.2%
Crohn's disease141.7%
Irritable bowel syndrome131.6%
Colitis ulcerative70.8%
Colitis50.6%
Crohn's disease40.5%

The indication field is filled in by the reporter and is often blank; shares are of all 836 reports.

In context

MeasureLomotilAnticholinergicAll reports
Reports as suspect product836159,80720,646,523
Share of that pool—0.5%0%
Reports, latest 12 months15—1,332,454
Marked serious55.7%39.6%57.4%
Death recorded among outcomes, per 1,000 reports326391
Hospitalisation recorded, per 1,000 reports270202213
Consumer-filed share45.5%70.6%45.8%
Top term, share of reportsDrug ineffective 37.7%median 9.2%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 anticholinergic class

DrugName typeReportsLatest 12 monthsMarked serious
Tiotropium bromidegeneric76,91761632.3%
Trelegy Elliptabrand26,7952,47235.1%
Anoro Elliptabrand12,55434626.3%
Ipratropium bromidegeneric8,31040080.2%
Spiriva Respimatbrand5,58124649.3%
Incruse Elliptabrand4,57512936.1%
Tudorza Pressairbrand3,858832.1%
Stiolto Respimatbrand2,89917225.2%
Atropinegeneric2,38616095.7%
Glycopyrrolategeneric2,22525892.3%
Transderm Scopbrand1,4981543%
Benztropinegeneric1,49216794.2%
Bevespi Aerospherebrand1,4676235.6%
Scopolaminegeneric1,26012568.6%
Atropine sulfategeneric1,1684784.7%

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 Lomotil reports

How many adverse event reports has FDA received for Lomotil?

836 reports list Lomotil as a suspect or interacting product in the openFDA FAERS release of 28 Sep 2026, covering reports received through June 2026. 15 of them arrived in the latest 12 months. Another 13,075 list it only as a concomitant medication.

What reactions are recorded in Lomotil reports?

drug ineffective (37.7%), diarrhoea (19%), macular degeneration (17.2%), nausea (14.8%) and weight decreased (13.9%). 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 Lomotil was responsible.

How serious are the reports?

55.7% are marked serious by the reporter. Among the outcomes recorded, 3.2% of reports include death and 27% 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 (45.5%), other health professional (29.2%) and physician (17.5%). Most reports reach FDA through the manufacturer, which must forward reports it receives.

Are reports for Lomotil rising?

15 reports in the 12 months to June 2026, down 74% from 58 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 Lomotil 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 Lomotil?

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 Lomotil as a suspect or interacting product; reports listing it only as a concomitant medication (13,075) 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.