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CBD-OS

Phase 3

Developmental and Epileptic Encephalopathy (DEE) | Small molecule | Other |Jazz Pharmaceuticals plc|Last Updated: Aug 11, 2026

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials1
Total Enrollment120

FDA Designations

No designations recorded

Clinical trial landscape

CBD-OS · 2 trials · 2 indications

Phase 3 1Phase 1 1
NCT07723976A Study to Evaluate the Safety and Efficacy of CBD-OS in Participants With DEEDevelopmental and Epileptic Encephalopathy (DEE)
NOT YET_RECRUITING120 Analytics
PHASE3NOT YET_RECRUITING
A Study to Evaluate the Safety and Efficacy of CBD-OS in Participants With DEE
Developmental and Epileptic Encephalopathy (DEE)Unlock trial analytics

Study Endpoints

Primary Endpoints

Change in Countable Motor Seizure Frequency Per 28 Days
Baseline up to 6 weeks of double-blind treatment period
Percent change in countable focal seizure frequency compared to baseline
Baseline up to 16 weeks

Secondary Endpoints

Change in Total Seizure Frequency Per 28 Days
Baseline up to 6 weeks of double-blind treatment period
Proportion of Participants Who Achieve ≥ 50% Reduction From Baseline in Countable Motor Seizure Frequency
Baseline up to 6 weeks of double-blind treatment period
Caregiver Global Impression of Change (CaGI-C) Score
Week 6 of double-blind treatment period
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Study Design & Arms

AllocationRANDOMIZED
MaskingDOUBLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
CBD-OSEXPERIMENTALParticipants with DEE will be randomized to CBD-OS up to 10 mg/kg twice daily for a 6-week treatment period.
PlaceboPLACEBO_COMPARATORParticipants with DEE will be randomized to matching placebo for a 6-week treatment period.
Open-Label Extension: CBD-OSEXPERIMENTALParticipants with DEE who completed the double-blind phase of the study and enter the optional OLE will begin a 22-week open-label treatment period with CBD-OS up to 10 mg/kg twice daily following a 2-week Blinded Transition Period.

Interventions

NameTypeDescription
CBD-OSDRUGOral solution, twice daily
PlaceboDRUGOral solution, twice daily
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Eligibility Criteria

Age Range1 Year to N/A
SexALL
Healthy VolunteersNo

Participants are eligible to be included in the study only if all the following criteria apply: 1. Is at least 1 year of age at the time of signing the informed consent/assent. 2. Meets the clinical phenotype for DEE as specified in the protocol. 3. Per the investigator, the underlying etiology con...

Countries:United States
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Recent Changes (Last 90 Days)

LOWAug 11, 2026NCT07233239lastUpdatePostDate: changed
LOWAug 11, 2026NCT07233239lastUpdatePostDate: changed
LOWJul 31, 2026NCT07233239lastUpdatePostDate: changed
LOWJul 31, 2026NCT07233239lastUpdatePostDate: changed
LOWJul 24, 2026NCT07723976NEW_TRIAL: changed
LOWJul 24, 2026NCT07723976NEW_TRIAL: changed

Frequently asked questions about CBD-OS

What is CBD-OS used for?

CBD-OS is an investigational small molecule being developed by Jazz Pharmaceuticals for the treatment of focal seizures and developmental and epileptic encephalopathy (DEE). It is a cannabidiol oral solution being studied in clinical trials for these epilepsy-related conditions.

What does CBD-OS target?

CBD-OS is a pharmaceutical formulation of cannabidiol, a cannabinoid compound. While its exact molecular target is not specified, it is being studied for its antiseizure effects in patients with focal seizures and developmental and epileptic encephalopathy.

Who makes CBD-OS?

CBD-OS is being developed by Jazz Pharmaceuticals plc, a biopharmaceutical company listed on the NASDAQ under the ticker symbol JAZZ. The company is conducting clinical trials to evaluate the efficacy and safety of this oral solution for seizure disorders.

What phase is CBD-OS in?

CBD-OS is currently in Phase 3 clinical development. One Phase 3 trial is recruiting participants with focal seizures, and another Phase 3 trial is not yet recruiting for developmental and epileptic encephalopathy. It remains investigational and is not yet approved by regulatory authorities.

What clinical trials is CBD-OS in?

CBD-OS is being studied in two clinical trials. NCT07233239 is a Phase 1 study evaluating efficacy and safety in focal-onset seizures, with 100 participants in the United States. NCT07723976 is a Phase 3 study in developmental and epileptic encephalopathy, with 120 participants.

Is CBD-OS the same as GWP42003-P or JZP926?

Yes, CBD-OS is also known as GWP42003-P and JZP926. These names refer to the same investigational cannabidiol oral solution being developed by Jazz Pharmaceuticals for the treatment of seizure disorders.