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Diarrhea clinical trials

The registry lists 877 studies for Diarrhea across more than 10 countries. 76 are recruiting or about to start. 519 of them are mainly about Diarrhea (how this is decided). Per ClinicalTrials.gov, last updated 2026-11-10. Counting its narrower condition Diarrhea, Infantile too: 897 studies, 80 open.

ClinicalTrials.gov finds 1,215 studies for Diarrhea. How that becomes 876 here

This page counts the studies the registry files under Diarrhea, and those it files under no condition that list Diarrheathemselves. Each study its search finds is placed by how the registry filed it and by the conditions it lists. ClinicalTrials.gov counts as of Nov 8, 2026. How condition pages count

  1. 1,215Found by its condition searchIt reads the conditions a study lists and their synonyms, and also titles and keywords.
  2. −20Filed under a narrower condition, counted on its own pageDiarrhea, Infantile 20
  3. −103List Diarrhea as a condition, but the registry did not file them under itMost often written as “Irritable Bowel Syndrome With Diarrhea” (16), “Antibiotic-associated Diarrhea” (9), and “Chronic Diarrhea” (8). The registry filed them under other conditions only, most often Irritable Bowel Syndrome (31) and Dysentery (13).
  4. −216Match it another way140 name it in the title, 38 in a keyword, and 38 by a synonym or other text the search reads.
  5. 876The count on this page175 of them list Diarrhea in their own words; the registry filed them under no condition.

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Status

Completed
595
Status unknown
95
Terminated
63
Recruiting
45
Withdrawn
26
Not yet recruiting
25

Phase

Phase 2
177
Phase 3
149
Phase 4
94
Phase 1
76
Early Phase 1
13

Where

United States
249
China
50
Bangladesh
46
Canada
45
India
42
United Kingdom
33

Who runs them

International Centre for Diarrhoeal Disease Research, Bangladesh (17) · London School of Hygiene and Tropical Medicine (16) · Mayo Clinic (13) · Johns Hopkins Bloomberg School of Public Health (12) · Bausch Health Americas, Inc. (11) · PATH (10) · Centers for Disease Control and Prevention (10) · Medical University of Warsaw (9)

What is being tested here

Drugs under test in Diarrhea studies, those with the most open studies first. Medicines only given beside them are not counted. How drugs are counted

DrugOpenPhase 3All
Rifaximin11016
Azithromycin128
Loperamide136
Mesalamine124
Lactoferrin122
Bacillus clausii101
Brenipatide101
Vedolizumab111
Mirtazapine101
Muramidase111

Drug classes tested here Antiemetics 10 · 5-HT3 antagonists 10 · Corticosteroids 5

Coming up

5phase 3 studies under way
32studies finish main data collection within a year1 of them phase 3

Studies recruiting or running, from their records. “Main data collection” ends at the primary completion date, the sponsor’s own estimate, which often moves.

The 10 nearest, phase 3 first

Who these studies take

Of the 45 Diarrhea studies recruiting now, 21 (47%) set no upper age limit and 22 (49%) stop at 75 or younger. 19 (42%) take children under 18. 4 (9%) are for women only and 0 (0%) for men only; 15 (33%) take healthy volunteers.

Recruiting studies that take each age, of 45
AgeWomenMen
109 (20%)7 (16%)
1832 (71%)28 (62%)
3033 (73%)29 (64%)
4033 (73%)29 (64%)
5032 (71%)28 (62%)
6531 (69%)27 (60%)
7526 (58%)23 (51%)
8522 (49%)19 (42%)

Across all 877 studies, recruiting or not: 58% stop at 75 or younger and 50% at 65; 42% take children; 3% are for women only and 2% for men only; 34% take healthy volunteers. From each study’s registry entry; the criteria on its page decide.

How long Diarrhea studies take

Of 47 phase 2 interventional studies under Diarrhea, half reached primary completion within 15 months of starting, counting those still running.

Start to primary completionEvery sponsorIndustryNon-industry
Phase 114 mo6–23 · 22 studies——
Phase 215 mo11–29 · 47 studies13 mo11–20 · 24 studies—
Phase 329 mo19–38 · 30 studies——
Phase 432 mo14–46 · 37 studies—37 mo14–48 · 32 studies
Interventional, no phase14 mo5–35 · 164 studies11 mo3–23 · 35 studies17 mo6–36 · 129 studies
Observational28 mo12–43 · 42 studies—28 mo12–47 · 34 studies

Each figure is the month by which half the studies had reached primary completion, with the range in which the middle half did. Studies still running count until their last registry update; studies that stopped early are left out. Phase 1 includes early phase 1; observational means prospective or not stated, as retrospective and cross-sectional studies date a window of data rather than a study. How these figures are worked out

What changed recently

From the registry's own updates since Oct 13, 2026.

Started recruiting2

Results posted1

Newly registered3

Studies

Recruiting first, then most recently updated. Showing 50 of 877. Browse all 877 → or search them.