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Breast Feeding clinical trials

The registry lists 1,081 studies for Breast Feeding across more than 10 countries. 217 are recruiting or about to start. 760 of them are mainly about Breast Feeding (how this is decided). Per ClinicalTrials.gov, last updated 2026-11-09. Counting its narrower condition Breast Milk Expression too: 1,144 studies, 230 open.

ClinicalTrials.gov finds 1,462 studies for Breast Feeding. How that becomes 1,080 here

This page counts the studies the registry files under Breast Feeding, and those it files under no condition that list Breast Feedingthemselves. 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. 1,462Found by its condition searchIt reads the conditions a study lists and their synonyms, and also titles and keywords.
  2. −63Filed under a narrower condition, counted on its own pageBreast Milk Expression 63
  3. −9List Breast Feeding as a condition, but the registry did not file them under itMost often written as “Breastfeeding Self-Efficacy” (3), “Maternal Breastfeeding in Newborns” (1), and “Maternal Nipple Pain Upon Breastfeeding” (1). The registry filed them under other conditions only, most often Depression, Postpartum (3) and Communication Disorders (1).
  4. −310Match it another way165 name it in the title, 18 in a keyword, and 127 by a synonym or other text the search reads.
  5. 1,080The count on this page48 of them list Breast Feeding in their own words; the registry filed them under no condition.

Get an email when these change. Save the Breast Feeding studies recruiting or about to start — once a week, free: studies that open, close, add sites or post results.

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Example · made-up studies

Breast cancer · Recruiting: 2 came in, 3 changed

What changed in your saved searches, Oct 31 – Nov 6:

A study of drug A after surgery for early breast cancer

Came in · now Recruiting

Drug B with hormone therapy in advanced breast cancer

Changed

· Sites: 4 added, including Seoul and Busan

· Enrollment: 300 → 450 participants

Exercise during chemotherapy

Now Active, not recruiting

One email a week for all your saved searches. Stop any time.

Status

Completed
679
Recruiting
126
Status unknown
94
Not yet recruiting
82
Active, not recruiting
37
Withdrawn
29

Phase

Phase 4
37
Phase 3
29
Phase 2
27
Phase 1
17
Early Phase 1
2

Where

Turkey
274
United States
250
Spain
35
France
34
Canada
33
Israel
21

Who runs them

Istanbul University - Cerrahpasa (16) · Saglik Bilimleri Universitesi (15) · Sakarya University (14) · University of California, Davis (13) · Selcuk University (13) · University of California, San Francisco (13) · Ege University (10) · Cukurova University (9)

What is being tested here

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

DrugOpenPhase 3All
Zoliflodacin101
Primaquine111
Tafenoquine111
Mirikizumab101
Estradiol101
Rivaroxaban101
Cimetidine101
Vitamin B 12111
Cholecalciferol014
Medroxyprogesterone Acetate003

Drug classes tested here Hormonal contraceptives 6 · Antiemetics 4 · Reverse transcriptase inhibitors 3

Coming up

2phase 3 studies under way
69studies 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 126 Breast Feeding studies recruiting now, 66 (52%) set no upper age limit and 58 (46%) stop at 75 or younger. 54 (43%) take children under 18. 77 (61%) are for women only and 1 (1%) for men only; 76 (60%) take healthy volunteers.

Recruiting studies that take each age, of 126
AgeWomenMen
1029 (23%)16 (13%)
18102 (81%)31 (25%)
30109 (87%)33 (26%)
4099 (79%)30 (24%)
5075 (60%)23 (18%)
6568 (54%)21 (17%)
7567 (53%)20 (16%)
8567 (53%)20 (16%)

Across all 1,081 studies, recruiting or not: 56% stop at 75 or younger and 56% at 65; 40% take children; 69% are for women only and 1% for men only; 68% take healthy volunteers. From each study’s registry entry; the criteria on its page decide.

How long Breast Feeding studies take

Of 17 phase 4 interventional studies under Breast Feeding, half reached primary completion within 14 months of starting, counting those still running.

Start to primary completionEvery sponsorIndustryNon-industry
Phase 414 mo7–30 · 17 studies——
Interventional, no phase12 mo6–23 · 510 studies—12 mo6–23 · 502 studies
Observational33 mo19–73 · 96 studies—31 mo19–54 · 86 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 recruiting1

Results posted1

Stopped2

Newly registered11

Show 6 more

Studies

Recruiting first, then most recently updated. Showing 50 of 1,081. Browse all 1,081 → or search them.