Sleepiness
Recent clinical, regulatory, research and industry developments relating to this disease.
The burden of untreated insomnia disorder in a sample of 1 million adults: a cohort study.
What's happening now
An analyst briefing on current research, clinical, regulatory and industry activity surrounding this disease.
- 2 clinical trials expected to report results, the earliest in Q4 2026.
- Q4 2026A Multi-center, Randomized, Double-blind, Placebo-controlled Trial to Assess the Efficacy and Safety of Solriamfetol in Excessive Sleepiness Associated With Shift Work Disorder
- Q4 2028A Multicenter, Double-blind, Placebo-controlled, Randomized Withdrawal Study of Solriamfetol in Subjects With Major Depressive Disorder With Excessive Daytime Sleepiness Symptoms
Clinical MilestonesViewHide
- 2026-03-20A Multicenter, Double-blind, Placebo-controlled, Randomized Withdrawal Study of Solriamfetol in Subjects With Major Depressive Disorder With Excessive Daytime Sleepiness SymptomsResults expected Q4 2028
- 2025-11-25A Multi-center, Randomized, Double-blind, Placebo-controlled Trial to Assess the Efficacy and Safety of Solriamfetol in Excessive Sleepiness Associated With Shift Work DisorderResults expected Q4 2026
- 2026-06-15ClinicalA Randomized, Double-blind, Sponsor-open, Placebo-controlled Study of the Safety, Tolerability, Pharmacokinetics, Pharmacodynamics, and Food Effect of Single and Multiple Ascending Doses of ORX142 in Healthy Adults, Single Doses of ORX142 in Healthy Older Adults, and a Single Dose Crossover, Proof-of-concept Study of ORX142 in Acutely Sleep-deprived Healthy SubjectsPrimary completion
- 2026-03-20ClinicalA Multicenter, Double-blind, Placebo-controlled, Randomized Withdrawal Study of Solriamfetol in Subjects With Major Depressive Disorder With Excessive Daytime Sleepiness SymptomsResults expected Q4 2028
- 2026-01-26ClinicalSolriamfetol's Effect on Cognitive Health in Apnea Participants During a Randomized Placebo-controlled Study (SHARP): a 5-Week Double-blind, Placebo-controlled, Randomized, Crossover, Multicenter Study of Solriamfetol in Improving Cognitive Function in Participants With Excessive Daytime Sleepiness Associated With Obstructive Sleep Apnea Plus Impaired Cognitive FunctionResults posted
- 2025-11-25ClinicalA Multi-center, Randomized, Double-blind, Placebo-controlled Trial to Assess the Efficacy and Safety of Solriamfetol in Excessive Sleepiness Associated With Shift Work DisorderResults expected Q4 2026
Therapeutic landscape
Therapies with a regulatory footing for this condition, alongside the wider set of agents co-studied with it in the literature.
Approval — Ozawade is indicated to improve wakefulness and reduce excessive daytime sleepiness (EDS)… (2021)
Approval — Sunosi is indicated to improve wakefulness and reduce excessive daytime sleepiness in adu… (2020)
Clinical trials
The current development programme across all trial phases.
Regulatory timeline
Drug regulatory events matched to this condition by indication — EMA.
European Medicines Agency (CC BY 4.0). Events are matched to this condition by drug indication text — approvals/updates for drugs indicated for it, not disease-specific acts.
Research activity
Key research shaping understanding of this disease, combining the latest publications with the most influential evidence.
Major themes1
- Sleep Initiation and Maintenance Disorders1
Leading journals1
- BMC public health1
Leading researchers6
- Ahuja A1
- Büsser A1
- Freidank M1
- Grandner M1
- McCall WV1
- Olivieri A1
Affiliations (unnormalised)2
- Medical College of Georgia at Augusta University1
- University of Arizona College of Medicine1
Reference
Authoritative identity, definition & identifiers.
Compelling urge to sleep.
- Disease identity & definition — NLM Medical Subject Headings (MeSH), public domain
- Clinical trials — ClinicalTrials.gov (U.S. National Library of Medicine)
- Research activity — Europe PMC (EMBL-EBI) + OpenAlex-derived paper links
- Related entities are derived from literature co-mention (studied together) — associative, not causal.