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Sleep Initiation and Maintenance Disorders clinical trials

The registry lists 2,726 studies for Sleep Initiation and Maintenance Disorders across more than 10 countries. 728 are recruiting or about to start. 1,616 of them are mainly about Sleep Initiation and Maintenance Disorders (how this is decided). Per ClinicalTrials.gov, last updated 2026-11-12.

ClinicalTrials.gov finds 2,705 studies for Sleep Initiation and Maintenance Disorders. How that becomes 2,719 here

This page counts the studies the registry files under Sleep Initiation and Maintenance Disorders, and those it files under no condition that list Sleep Initiation and Maintenance Disordersthemselves. 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. 2,705Found by its condition searchIt reads the conditions a study lists and their synonyms, and also titles and keywords.
  2. −3List Sleep Initiation and Maintenance Disorders as a condition, but the registry did not file them under itMost often written as “Familial Fatal Insomnia” (2) and “Sleep Initiation and Maintenance Disorder; Elderly” (1). The registry filed them under other conditions only, most often Insomnia, Fatal Familial (2) and Mental Disorders (1).
  3. −17Match it another way1 name it in the title, 3 in a keyword, and 13 by a synonym or other text the search reads.
  4. 2,685Counted here and found by its search
  5. +34
    Counted here, but its search does not find themThe first 20 of 34.
  6. 2,719The count on this page

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Status

Completed
1,558
Recruiting
388
Not yet recruiting
291
Status unknown
211
Active, not recruiting
88
Terminated
88

Phase

Phase 3
172
Phase 2
169
Phase 4
139
Phase 1
80
Early Phase 1
18

Where

United States
903
Turkey
391
China
198
Taiwan
123
Canada
104
Hong Kong
86

Who runs them

VA Office of Research and Development (50) · The University of Hong Kong (46) · Chinese University of Hong Kong (25) · Takeda (25) · University of Pennsylvania (24) · Karolinska Institutet (24) · Brigham and Women's Hospital (23) · The Hong Kong Polytechnic University (22)

What is being tested here

Drugs under test in Sleep Initiation and Maintenance Disorders studies, those with the most open studies first. Medicines only given beside them are not counted. How drugs are counted

DrugOpenPhase 3All
Melatonin8625
Lemborexant8421
Daridorexant6516
Suvorexant5538
Trazodone4412
HS-10506323
Zolpidem2740
Quetiapine238
Spirulina maxima202
Eszopiclone11440

Drug classes tested here Antipsychotics 3 open · Antiemetics 1 open · SSRIs 8 · Stimulants 7 · NK1 receptor antagonists 6

Coming up

15phase 3 studies under way
282studies finish main data collection within a year6 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 388 Sleep Initiation and Maintenance Disorders studies recruiting now, 152 (39%) set no upper age limit and 206 (53%) stop at 75 or younger. 59 (15%) take children under 18. 44 (11%) are for women only and 4 (1%) for men only; 108 (28%) take healthy volunteers.

Recruiting studies that take each age, of 388
AgeWomenMen
1033 (9%)33 (9%)
18258 (66%)236 (61%)
30271 (70%)247 (64%)
40281 (72%)258 (66%)
50282 (73%)252 (65%)
65276 (71%)251 (65%)
75204 (53%)190 (49%)
85166 (43%)155 (40%)

Across all 2,726 studies, recruiting or not: 50% stop at 75 or younger and 42% at 65; 10% take children; 11% are for women only and 1% for men only; 32% take healthy volunteers. From each study’s registry entry; the criteria on its page decide.

How long Sleep Initiation and Maintenance Disorders studies take

Of 62 phase 2 interventional studies under Sleep Initiation and Maintenance Disorders, half reached primary completion within 17 months of starting, counting those still running.

Start to primary completionEvery sponsorIndustryNon-industry
Phase 15 mo3–20 · 39 studies4 mo1–5 · 23 studies—
Phase 217 mo12–40 · 62 studies13 mo6–16 · 26 studies—
Phase 319 mo15–28 · 42 studies18 mo9–25 · 29 studies—
Phase 428 mo17–55 · 57 studies—30 mo18–59 · 52 studies
Interventional, no phase15 mo6–34 · 1,289 studies6 mo3–23 · 78 studies15 mo6–35 · 1,211 studies
Observational18 mo4–40 · 137 studies—21 mo5–42 · 127 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 recruiting12

Show 7 more

Results posted3

Stopped2

Newly registered49

Show 44 more

Studies

Recruiting first, then most recently updated. Showing 50 of 2,726. Browse all 2,726 → or search them.