TheraRadar
Data updated: May 26, 2026

DAYVIGO (lemborexant)

Orexin Receptor Antagonists Trial Activity: Stable 6 active trials
Sleep Approved 2019-12-20

DAYVIGO is indicated for the treatment of Insomnia.

Source: FDA Label • EISAI INC • Orexin Receptor Antagonist

How DAYVIGO Works

Lemborexant is a dual orexin receptor antagonist (DORA). Its mechanism of action is presumed to be through the antagonism of orexin receptors OX1R and OX2R. By blocking the binding of the wake-promoting neuropeptides orexin A and orexin B to these receptors, the drug suppresses the physiological wake drive.

Development Insights

Eisai Inc. conducting 8 trials (38%)
26 indications explored (Broad Platform)
insomnia (4 trials)
delayed sleep phase syndrome (2 trials)
sleep initiation and maintenance disorders (2 trials)
2
Indications
--
Phase 3 Trials
6
Years on Market

Details

Status
Prescription
First Approved
2019-12-20
Patent Cliff
2035

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Routes
ORAL
Dosage Forms
TABLET

Companies

Active Ingredient: LEMBOREXANT

DAYVIGO Approval History

2020
2021
2022
2023
2024
2025
2026
Original
New Indication
New Form
Label Update
12 FDA actions from 2019 to 2025 · 1 indication expansions
Feb 2025 SUPPL
Label · Labeling
Apr 2023 SUPPL
Efficacy
Jan 2023 SUPPL
Label · Labeling

What DAYVIGO Treats

1 indications

DAYVIGO is approved for 1 conditions since its original approval in 2019. These indications span multiple therapeutic areas including oncology, immunology, and more.

  • Insomnia
Source: FDA Label

DAYVIGO Competitive Set

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Filters applied: drops same-active-ingredient (505(b)(2) reformulations), route-mismatch (topical vs systemic), and cross-therapeutic-area matches in same-indication rings.

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Clinical Trial Registry

20 trials
Trial Sponsor ID Phase Status Title
NCT06843187 MDD 24-133 68425v4 Ph 2 recruiting Lemborexant for the Treatment of Residual Insomnia in Major Depressive Disorder (MDD)
NCT07384429 2025401 Ph 4 recruiting Effects of Lemborexant on Motor-sleep Comorbidity in Parkinson's Disease
NCT07480096 24-11-1690 Ph 2 completed Efficacy and Safety of Lemborexant for Patients With Cirrhosis and Sleep Problems
NCT05463861 59441 Ph 4 completed Lemborexant in Delayed Sleep Phase Syndrome
NCT07407400 LEM-SICU Ph 4 not yet recruiting Lemborexant for Sleep and Delirium Prevention in Elderly ICU Patients
NCT05344443 results posted 20-32763 Ph 4 completed Lemborexant Shift Work Treatment Study
NCT05594589 results posted E2006-J082-204 Ph 2 completed A Study to Assess the Pharmacodynamics of Lemborexant in Korean Participants With Insomnia Disorder
NCT06874855 23-38738 Ph 4 recruiting Lemborexant in Delayed Sleep Phase Syndrome
NCT06262594 L'ÉTOILE L'ÉTOILE Ph 3 recruiting Lemborexant Treatment of Insomnia Linked to Epilepsy
NCT04549168 results posted E2006-J086-311 Ph 3 completed A Study of Lemborexant in Chinese Participants With Insomnia Disorder
NCT04818086 results posted HM20021136 UG1DA050207 Ph 1, Ph 2 completed Drug-drug Interaction Study of Lemborexant as an Adjunctive Treatment for Buprenorphine/Naloxone for Opioid Use Disorder
NCT02783729 SUNRISE 1 results posted E2006-G000-304 2015-004347-39 Ph 3 completed Study of the Efficacy and Safety of Lemborexant in Subjects 55 Years and Older With Insomnia Disorder (SUNRISE 1)
NCT06496282 LEMY-2024 Ph 3 recruiting Lemborexant on Improving Sleep Quality Among Hospital Rotating Shift Workers
NCT04890561 E2006-A001-010 Ph 1 completed A Study to Evaluate Lemborexant in Milk of Healthy Lactating Women
NCT04555733 E2006-J086-014 Ph 1 completed A Single and Multiple Dose Study of Lemborexant in Healthy Chinese Participants
NCT03440424 results posted E2006-A001-104 Ph 1 completed Study to Evaluate the Pharmacokinetics of Lemborexant (E2006) and Its Metabolites in Subjects With Mild and Moderate Hepatic Impairment Compared to Healthy Subjects
NCT03443063 results posted E2006-A001-105 Ph 1 completed Study to Evaluate the Pharmacokinetics of Lemborexant (E2006) and Its Metabolites in Subjects With Normal Renal Function or With Severe Renal Impairment
NCT02952820 results posted E2006-G000-303 2015-001463-39 Ph 3 completed Long-term Study of Lemborexant in Insomnia Disorder (SUNRISE 2)
NCT03483636 E2006-A001-009 Ph 1 completed Study of Lemborexant-Alcohol Interaction in Healthy Subjects
NCT03451110 E2006-A001-012 Ph 1 completed Study to Assess the Pharmacokinetic Drug-Drug Interactions of Lemborexant When Coadministered With an Oral Contraceptive, Famotidine, or Fluconazole in Healthy Subjects
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Active Pipeline

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Ongoing clinical trials by development phase

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Key Completed Trials

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Completed studies with published results, ranked by significance

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Trial Timeline

Full development history with FDA approval milestones

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Understanding FDA Approval Types
Count Type What it means
- ORIG Original approval - drug first enters market
- SUPPL - Efficacy New indication (new disease/condition approved)
- SUPPL - Labeling Label text changes (warnings, dosing updates)
- SUPPL - Manufacturing Production changes (new facility)
- SUPPL - Chemistry Formulation changes (new dosage strength)

Green lines in the timeline show ORIG and Efficacy approvals - the clinically meaningful milestones.

DAYVIGO FDA Label Details

Indications & Usage

FDA Label (PDF)

DAYVIGO is indicated for the treatment of Insomnia.

View full patent landscape →
4 OB patents · 2 families · 72 international docs across 29 countries

DAYVIGO Patents & Exclusivity

Latest Patent: Oct 2035
Exclusivity: Apr 2026

Patents (4 active)

US10188652 Expires Oct 21, 2035
US11026944 Expires Oct 21, 2035
US10702529 Expires Oct 21, 2035
US8268848 Expires Sep 20, 2031

Exclusivity

M-293 Until Apr 2026
M-293 Until Apr 2026
M-293 Until Apr 2026
M-293 Until Apr 2026
Source: FDA Orange Book

Pro Intelligence Preview

Deep insights for DAYVIGO

Revenue Insights

  • Quarterly revenue tracking
  • Historical trend analysis

Patent Timeline

  • Cliff: 2035
  • 16 active patents

Trial Analysis

  • 21 total trials
  • Stage: Stable

Competitive Landscape

  • 17 similar drugs
  • Same target/indication analysis
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Data Sources

Data sourced from official FDA and NIH databases. Click links to verify on original sources.

How We Calculate These Metrics

Trial Activity Stage

Measures the current development activity pattern based on trial phases, status, and trends. Important: This measures R&D activity, not commercial lifecycle.

Trial statuses: "Active" means recruiting or ongoing. "Completed" means reached planned endpoint. "Terminated" means stopped early—often due to safety, efficacy, or business reasons.

  • Growth: High proportion of early-phase trials (Phase 1/2), active development
  • Expansion: Significant Phase 3 activity, approaching or pursuing approvals
  • Mature: Substantial Phase 4 post-marketing studies
  • Stable: Mixed phase distribution, steady development
  • Declining: Low active trial ratio, reduced R&D investment