Recent Updates
Recently added Catalysts

CBD

Phase 4FDA approved 2018

Opiate Addiction | Small molecule | Other |Jazz Pharmaceuticals plc|Trials Updated: Oct 2, 2026

CBD development status

FDA approval Jun 25, 2018 as Epidiolex
Approval holderJazz Pharms Res
ApplicationNDA210365
Highest phase Phase 4 (NCT05044819)
Phase scored for JAZZPhase 2
Registered trials 35 across 10 sponsors since Oct 2010

Label indication EPIDIOLEX is indicated for the treatment of seizures associated with Lennox-Gastaut syndrome (LGS), Dravet syndrome (DS), or tuberous sclerosis complex (TSC) in patients 1 year of age and older. EPIDIOLEX is indicated for the treatment of seizures associated with Lennox-Gastaut syndrome, Dravet syndrome, or tuberous sclerosis complex in patients 1 year of age and older ( 1 ) FDA label

CBD target and mechanism

ModalitySmall molecule

Also known as Cannabidiol, Epidiolex, GWP42003-P, CBD-OS, GWP42003

Success Probability

Subscribe to view

Market & Valuation

Subscribe to view

Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials16
Total Enrollment1,379

FDA Designations

No designations recorded

CBD clinical trials

CBD · 16 trials · 26 indications

Phase 3 2Phase 2 10Phase 1 4
NCT07434973Stratification and Treatment in Early Psychosis Study - PROMOTEClinical High Risk for Psychosis (CHR)
NOT YET_RECRUITING586 Analytics
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
Stratification and Treatment in Early Psychosis Study - PROMOTE
Clinical High Risk for Psychosis (CHR)Unlock trial 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

ChaChange from baseline in attenuated positive psychotic symptoms (CAARMS P1-P4 positive symptom subscale score)
Baseline to Week 104

Change from baseline to Week 104 in the positive symptom subscale score (P1-P4) of the Comprehensive Assessment of At-Risk Mental States (CAARMS). Higher scores indicate greater symptom severity.

Change in Countable Motor Seizure Frequency Per 28 Days
Baseline up to 6 weeks of double-blind treatment period
Eyeblink analysis from high speed videocamera recordings - see separate outcome measures
4 measurements over 6 months

All patients will undergo video recording of their eyelid kinematics at days 0, 45, 90, 135, and 180. A high-resolution commercially available video camera will capture the eyelid positions at a sampling rate of thirty frames per second. Patients will be assessed in three different lighting conditions - in regular exam room lighting, under examination with the glare source of an indirect ophthalmoscope (at 2000 lux on both eyes from 5 feet), and in dim lighting. The upper and lower eyelid positions captured from each frame of the videos will be input into custom software developed by Visage Technologies, which fits a feature template to the facial features in each frame, including the upper and lower lids of each eye. The difference between the upper and lower lid positions defined the lid aperture, also known as the palpebral fissure. The eyeblink parameters will then calculated from the eyelid aperture time series with custom software written in MATLAB.

Median Blink Amplitude
4 measurements over 6 months

Measured in millimeters (mm)

Changes in Cue-Induced In-Clinic Craving (From Baseline to Post-cue (30 Minutes), and From Test Day 1 Through Test Day 4 (1 Week)) - Via the Visual Analog Scale for Craving (VASC)
VASC: test day I, II and IV - at arrival, baseline for cue 1 and 2, post-cue 1 and 2, before discharge (approximately 2.5 hours from session start on average); test day III: at arrival and discharge (approx. 2.5 hours from session start on average)

The VASC will be administered to assess potential variations in the subjective craving effects associated with heroin. Following the administration of the investigational drug, craving induced in response to the cue sessions in the clinic will be measured. Note, cue sessions occur consecutively in the same test day. In this way, changes in craving from baseline (pre-cue to post-cue within each test day), as well as changes in cue-induced craving over the short-term (test day 1 through test day 4 a week later) will be monitored and measured. VASC scale ranges from 0 for "Not Craving at All" to 10 for "Extremely Craving."

Changes in Out-of-Clinic Craving (From Pre-dose to Approximately 4-6 Hours Post-dose; and From Test Day 1 to Test Day 4 or 1 Week) - Via the Heroin Craving Questionnaire (HCQ)
HCQ: once in clinic pre-dose at each test day, and once at home after each test day.

Subjects will be asked to complete the short version of the HCQ on their own time at home and bring it with them when they return for their next visit. Upon arrival to the clinic, subjects will also complete an HCQ with the coordinator to assess daily baseline cravings. This questionnaire will help us assess changes in craving generated outside of the clinical laboratory session from test day 1 through test day 4 (1 week later). Each item is scored on a scale ranging from 1 for "Strongly Disagree" to 7 for "Strongly Agree." Sum of all 14 items are scored and added. Mean scores reported below. Total Score Range: 14 (less cravings) - 98 (more cravings).

CBD effects on in vivo glutamatergic levels within mesocorticolimbic brain regions
2 MRI Scans (duration 30 mins)

Effects of CBD on in-vivo glutamatergic levels within mesocorticolimbic brain regions using Proton-Magnetic resonance spectroscopy.

Change in fMRI BOLD signal during cue reactivity
2 MRI Scans (duration 15 mins)

Change in fMRI blood-oxygen-level dependent (BOLD) signal acquired during the cue reactivity task at the 2nd MRI conducted 1 week after intervention as compared to the 1st MRI.

Change in fMRI BOLD signal acquired during resting-state functional connectivity
2 MRI Scans (duration 10 mins)

Change in fMRI blood-oxygen-level dependent (BOLD) signal acquired during resting-state at the 2nd MRI conducted 1 week after intervention as compared to the 1st MRI.

Severity of Participants Reporting Study-related Adverse Events at Each Dose Level
Every 3rd day on each dose level, assessed up to 5 weeks

Severity of each specific adverse event was scored as 0=no adverse event, 1=mild adverse event, 2=moderate adverse event, and 3=sever adverse event. The range of severity is 0-3. Higher scores mean a worse outcome. The severity was expressed as mean (standard deviation).

Number of Participants Had Changes in Orthostatic Blood Pressure
Baseline and 5 weeks

Orthostatic blood pressure will be monitored at each study visit.

Number of Participants Had Changes in Physical Exam
Baseline and 5 weeks

A physical exam will be performed at each study visit.

Number of Participants Had Changes in EKG
Baseline and 5 weeks

EKG will be performed at each study visit.

Number of Participants Had Changes in Laboratory Values
Baseline and 5 weeks

Laboratory tests (hematology, serum chemistry, and urinalysis) will be evaluated at each study visit.

Proportion of Subjects That Drop Out of the Study Due to Study Drug Intolerance
Baseline and 5 weeks

Assessing the proportion of subjects that drop out of the study due to study drug intolerance.

Change in Movement Disorder Society-Unified Parkinsons Disease Rating Scale Total Score
Baseline and 5 weeks

There are four parts: Part I (Non-motor experiences of daily living, scores range 0-52), Part II (motor experiences of daily living, scores range 0-52), Part III (motor examination, scores range 0-132) and Part IV (motor complications scores range 0-24). Subscales are summed to a total score, ranging 0-260. Higher scores mean a worse outcome.

Change in Montreal Cognitive Assessment (MoCA)
Baseline and 5 weeks

MoCA - is designed as a rapid screening instrument for mild cognitive dysfunction. It assesses different cognitive domains: attention and concentration, executive functions, memory, language, visual -constructional skills, conceptual thinking, calculation. Scores range 0-30. Higher values represent a better outcome.

Change in Anxiety Short Form
Baseline and 5 weeks

This includes 8 items that assess severity of anxiety. Scores range 8-40. Higher values represent a worse outcome.

Change in Neuropsychiatric Inventory (NPI)
Baseline and 5 weeks

Assessing neuropsychiatric symptoms and psychopathology of patients with Alzheimer's disease and other neurodegenerative disorders. It has proven to be sensitive to change and has been employed to capture treatment related behavioral.Total NPI scores range 0-120. Higher values represent a worse outcome.

Change in Depression Short Form
Baseline and 5 weeks

This includes 8 items that assess severity of depression. Score range 8-40. Higher values represent a worse outcome.

Change in Scales for Outcomes in Parkinson's Disease (SCOPA)-Sleep-night Time Sleep
Baseline and 5 weeks

A valid, reliable, short scale that is used to evaluate night time sleep problems in PD. Scores range 0-18. Higher values represent a worse outcome.

Change From Baseline of REM Sleep Behavior Disorder Screening Questionnaire (RBDSQ)
Baseline and 5 weeks

10-item, patient self-rating instrument assessing the subject's sleep behavior with short questions that have to be answered by either "yes" or "no". Scores range 0-13. Higher values represent a worse outcome.

Change in Emotional and Behavioral Dyscontrol Short Form
Baseline and 5 weeks

8 items that assess severity of emotional and behavioral dyscontrol. Scores range 8-40. Higher values represent a worse outcome.

Change in Pain Severity Form
Baseline and 5 weeks

This will assess severity of pain. Scores range 3-15. Higher scores represent a worse outcome.

Change in Questionnaire for Impulsive-Compulsive Disorders in Parkinson's Disease-Rating Scale (QUIP-RS)
Baseline and 5 weeks

To measure severity of symptoms and support a diagnosis of impulse control disorders and related disorders in PD. Total QUIP-RS scores were summed by 6 subscores (gambling 0-16, Sex 0-16, Buying 0-16, Eating 0-16, Hobbyism-punding 0-32, and PD Medication use 0-16), range 0-112. Higher scores represent a worse outcome.

Change in Fatigue Severity Scale
Baseline and 5 weeks

A self-report 9-item questionnaire with questions related to how fatigue interferes with certain activities and rates its severity. Scores range 9-63. Higher values represent a worse outcome.

Change in International Restless Legs Syndrome Study Group Rating Scale for Restless
Baseline and 5 weeks

This encompasses a ten-question instrument for measuring severity of restless legs syndrome (RLS). Score range 0-40. Higher values represent a worse outcome.

Change in Unified Dyskinesia Rating Scale (UDysRS)
Baseline and 5 weeks

To evaluate involuntary movements often associated with treated Parkinson's disease. Total UDysRS scores is the sum of historical sub-scores (0-60) and objective sub-score (0-44). Total scores range 0-104. Higher values represent a worse outcome.

List Sorting Working Memory Test
Baseline, Follow-up (6 months)

Data on cognitive function was collected using the List Sorting Working Memory Test from the NIH Toolbox. Data was collected on working memory performance, which was transformed into a t-score from 0 to 100 where a higher t-score indicates better performance. T-score of 50 indicates the population mean with a standard deviation of 10. Data was collected at baseline and after 6 months on study drug.

Safe completion as assessed by the number of participants with no significant side effects
6 months
Safe completion as assessed by the number of participants with no seizure onset
6 months
Change From Baseline To End Of Treatment (Day 43) In Positive And Negative Syndrome Scale (PANSS) Total Score
Day 1 through Day 43

The PANSS was a 30-item medical scale completed by a trained rater that assessed the positive and negative symptoms of schizophrenia as well as symptoms of general psychopathology. The PANSS Total score was derived from the sum of the 30 items, which were rated on a 7-point scale, where 1 = absent and 7 = extreme. The total score is the summed total for each of the PANSS positive symptom ('P'), negative symptom ('N'), general psychopathology symptom ('G') scores and could range from 30 to 210 points, with lower scores equating to milder severity of symptoms, that is, closer to psychologically normal.

Percentage Of PANSS Total Score Responders At End Of Treatment (Day 43)
Day 1 through Day 43

The percentage of PANSS treatment responders, defined as participants with ≥20% improvement in PANSS Total score between baseline and End of Treatment, is presented. The percentage of participants was calculated by dividing the number of participants with a ≥20% improvement in PANSS Total score (yes) by the total number of participants.

Change From Baseline To The End Of Treatment (Day 43) In PANSS 'P' Score
Day 1 through Day 43

The PANSS 'P' scale measured the severity of positive symptoms, including delusions, conceptual disorganization, hallucinations, hyperactivity, grandiosity, suspiciousness/persecution, and hostility. Individual items were rated on a 7-point scale, where 1 = absent and 7 = extreme. The total 'P' score could range from 7 to 49 points, with lower scores equating to milder severity of symptoms, that is, closer to psychologically normal.

Change From Baseline To The End Of Treatment (Day 43) In PANSS 'N' Score
Day 1 through Day 43

The PANSS 'N' scale measured the severity of negative symptoms, including blunted affect, emotional withdrawal, poor rapport, passive/apathetic social withdrawal, difficulty in abstract thinking, lack of spontaneity and flow of conversation, and stereotyped thinking. Individual items were rated on a 7-point scale, where 1 = absent and 7 = extreme. The total 'N' score could range from 7 to 49 points, with lower scores equating to milder severity of symptoms, that is, closer to psychologically normal.

Change From Baseline To The End Of Treatment (Day 43) In PANSS 'G' Score
Day 1 through Day 43

The PANSS 'G' scale measured the severity of general psychopathology symptoms, including somatic concern, anxiety, guilt feelings, tension, mannerisms and posturing, depression, motor retardation, uncooperativeness, unusual thought content, disorientation, poor attention, lack of judgement and insight, disturbance of violation, poor impulse control, preoccupation, and active social avoidance. Individual items were rated on a 7-point scale, where 1 = absent and 7 = extreme. The total 'G' score could range from 16 to 112 points, with lower scores equating to milder severity of symptoms, that is, closer to psychologically normal.

Change From Baseline To The End Of Treatment (Day 43) In The Scale For The Assessment Of Negative Symptoms (SANS)
Day 1 through Day 43

The SANS assessed 5 symptom complexes to obtain clinical ratings of negative symptoms in participants with schizophrenia or related psychotic disorder. Symptom complexes were affective blunting, alogia (impoverished thinking), avolition/apathy, anhedonia/asociality, and disturbance of attention. Assessments were conducted on a 6-point scale (0 = not at all; 5 = severe). The total score could range from 0 to 125 points, with lower scores equating to milder severity of symptoms, that is, closer to psychologically normal.

Change From Baseline To The End Of Treatment (Day 43) In The Clinical Global Impression Severity Scale (CGI-S)
Day 1 through Day 43

The CGI-S was a 7-point scale that required the clinician to rate the severity of a participant's illness at the time of assessment, relative to the clinician's past experience of participants who had the same diagnosis. Considering total clinical experience, participants were assessed on severity of mental illness at the time of rating on the following scale: 1 = normal, not at all ill; 2 = borderline mentally ill; 3 = mildly ill; 4 = moderately ill; 5 = markedly ill; 6 = severely ill; or 7 = extremely ill. Lower scores equated to milder severity of symptoms, that is, closer to psychologically normal.

Clinical Global Impression Improvement Scale (CGI-I) Values At Day 8 And End Of Treatment (Day 43)
Day 8 through Day 43

The CGI-I was a 7-point scale that required the clinician to assess how much a participant's illness had improved or worsened relative the first assessment at the beginning of the intervention. This was rated on the following scale: 1 = very much improved; 2 = much improved; 3 = minimally improved; 4 = no change; 5 = minimally worse; 6 = much worse; or 7 = very much worse. Lower scores equated to improvement of symptoms.

Change From Baseline To The End Of Treatment (Day 43) In Brief Assessment Of Cognition In Schizophrenia (BACS) Score
Day 1 through Day 43

The BACS was an instrument used to assess the aspects of cognition found to be most impaired and most strongly correlated with outcome in participants with schizophrenia or related psychotic disorder. The BACS consisted of 6 domains: verbal memory (score range 0 to 75), working memory (score range 0 to 28), motor speed (score range 0 to 100), verbal fluency (score \> 0, with no set maximum value), attention and speed of information processing (score range 0 to 110), and executive functions (score range 0 to 22). A score was obtained for each of the 6 domains. A composite summary score was then calculated as the arithmetic mean of the unweighted scores from the 6 domains. While there was not an upper limit on the composite score, overall, an increase in score was indicative of an improvement in cognition.

Number Of Participants With A Mayo Score Of 2 Or Less (With No Sub-score >1) At EOT
Baseline to End of Treatment (EOT) (10 weeks) or Early Termination (ET)

The Mayo score is an assessment of ulcerative colitis activity. The Mayo total score ranges from 0 to 12 points with higher scores indicating more severe disease. The total score is made up of 4 sub-scores, each of which is assessed using a 0 to 3 scale. Sub-scores are graded as follows: Stool Frequency: 0 = Normal number of stools, 1 = 1 to 2 stools more than normal, 2 = 3 to 4 stools more than normal, 3 = 5 or more stools more than normal; Rectal Bleeding: 0 = No blood seen, 1 = Streaks of blood with stool less than half the time, 2 = Obvious blood with stool most of the time or more, 3 = Blood alone passes; Findings on Endoscopy: 0 = Normal or inactive disease, 1 = Mild disease (erythema, decreased vascular pattern, mild friability), 2 = Moderate disease (marked erythema, lack of vascular pattern, friability, erosions), 3 = Severe disease (spontaneous bleeding, ulceration); Physician's Global Assessment of Illness Severity (PGAS): 0 = none, 1 = mild, 2 = moderate, and 3 = severe.

Number Of Participants With A Mayo Score Of 2 Or Less (With No Sub-score >1) At EOT - PP Analysis
Baseline to EOT (10 weeks) or ET

The Mayo score is an assessment of ulcerative colitis activity. The Mayo total score ranges from 0 to 12 points with higher scores indicating more severe disease. The total score is made up of 4 sub-scores, each of which is assessed using a 0 to 3 scale. Sub-scores are graded as follows: Stool Frequency: 0 = Normal number of stools, 1 = 1 to 2 stools more than normal, 2 = 3 to 4 stools more than normal, 3 = 5 or more stools more than normal; Rectal Bleeding: 0 = No blood seen, 1 = Streaks of blood with stool less than half the time, 2 = Obvious blood with stool most of the time or more, 3 = Blood alone passes; Findings on Endoscopy: 0 = Normal or inactive disease, 1 = Mild disease (erythema, decreased vascular pattern, mild friability), 2 = Moderate disease (marked erythema, lack of vascular pattern, friability, erosions), 3 = Severe disease (spontaneous bleeding, ulceration); PGAS: 0 = none, 1 = mild, 2 = moderate, and 3 = severe.

Percent Change From Baseline To The End Of Treatment (EOT) In Mean Liver Triglyceride Levels
Baseline to EOT (Day 57) or Early Termination (ET)

Liver triglyceride levels were measured by Magnetic Resonance Imaging/Magnetic Resonance Scanning and the percent change from baseline to EOT in group mean levels was investigated. A reduction from baseline, that is, a negative value, indicates an improvement in condition.

The Change From Baseline in Mean Serum High Density Lipoprotein Cholesterol Concentration After 91 Days (13 Weeks) of Treatment
Baseline (Day 1) and End of treatment (Day 92)

At baseline and the end of treatment, an approximately 30 mL fasting blood sample was taken for measurement of serum High Density Lipoprotein cholesterol. An increase from baseline to the end of treatment, a positive value, indicates an improvement.

Frequency of Spike Wave Index
Up to 20 weeks

Assess the reduction in spike wave index by evaluating the differences in activity from the four 24-hour ambulatory EEGs each participant obtains while enrolled in this study

Neural (BOLD) functional response
Day 2

Measurement of brain activity using the Blood Oxygenation Level Dependent (BOLD) signal Neural (BOLD) functional response to acute stress and network hierarchy in resting state functional connectivity. BOLD response will measure neural activity during stress conditions as compared to rest and control conditions

Neuronal viability indexed by GLX (combined glutamate/glutamine levels) and N-acetylaspartate (NAA) using 1H-MRS.
at day 2

Concentration of brain chemicals (N-acetylaspartate, Glutamate/Glutamine Levels) as an indicator of brain health measured using non-invasive imaging of magnetic resonance spectroscopy.

Serum Cortisol level
Day 2, Day 3

The cortisol blood test measures the level of cortisol in the blood. Cortisol is a steroid (glucocorticoid or corticosteroid) hormone produced by the adrenal gland.

Salivary Cortisol level
Day 2, Day 3

The cortisol saliva test measures the level of cortisol in the saliva. Cortisol is a steroid (glucocorticoid or corticosteroid) hormone produced by the adrenal gland.

Number of Seizures Per Month
Measured within 56 days before baseline and 56 days before week 14

A baseline seizure frequency was recorded for each subject in a diary for eight weeks prior to investigational drug initiation and parents/caregivers documented seizures on a daily basis throughout the trial using a seizure log. For assessing the efficacy of CBD, the investigator counted the change in frequency of seizures per month. The number of seizures within 56 days of the baseline and the number of seizures within 56 days of week 14 were calculated. Higher seizure frequency indicates worse outcome. This outcome is measured as the change in number of seizures per month between the baseline and week 14 time points.

Percent change in countable focal seizure frequency compared to baseline
Baseline up to 16 weeks

Secondary Endpoints

Change in attenuated psychotic symptoms (Comprehensive Assessment of At-Risk Mental States, CAARMS total score)
Baseline to Week 4
Change in attenuated psychotic symptom subscale scores (Comprehensive Assessment of At-Risk Mental States, CAARMS P1-P4)
Baseline to Week 4
Change in distress associated with attenuated psychotic symptoms
Baseline to Week 4
Unlock Study Endpoints

Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Cannabidiol 100g/ml oral solutionACTIVE_COMPARATORParticipants will take the intervention for 106 weeks (104 weeks plus a 2-week taper). Doses depend on age and weight: Adults (16 years and older) over 50kg: daily dose 600mg (6ml); 300mg (3ml) twice a day (b.i.d); Adults (16 years and older) less than 50kg: daily dose 10mg/kg; 5mg/kg twice a day (b.i.d); Children (\<16 years old): daily dose 5mg/kg twice a day (b.i.d), following on from a two-week rapid titration schedule. n=188
PlaceboPLACEBO_COMPARATORParticipants will take the intervention for 106 weeks (104 weeks plus a 2-week taper). Doses depend on age and weight: Adults (16 years and older) over 50kg: daily dose 600mg (6ml); 300mg (3ml) twice a day (b.i.d). Adults (16 years and older) less than 50kg: daily dose 10mg/kg; 5mg/kg twice a day (b.i.d). Children (\<16 years old): daily dose 5mg/kg twice a day (b.i.d), following on from a two-week rapid titration schedule. n=188
Healthy controlsNO_INTERVENTIONA healthy control in the context of this trial is someone who does not meet CHR-P criteria or have a diagnosis of a mental health condition. They will not take the trial intervention and attend one trial visit for clinical assessments and biomarker sampling only. n=150
CBD-OSEXPERIMENTALParticipants with DEE will be randomized to CBD-OS up to 10 mg/kg twice daily 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.
Group A - active medication followed by placeboACTIVE_COMPARATOR -
Group B - placebo followed by active medicationACTIVE_COMPARATOR -
ControlPLACEBO_COMPARATORSubjects will receive a solution that resemble the Cannabidiol solution but do not have have its properties
CBD 400mgEXPERIMENTALSubjects will receive 400mg of cannabidiol
CBD 800mgEXPERIMENTALSubjects will receive 800 mg of cannabidiol
cannabidiolEXPERIMENTALGWP42003-P oral solution, is purified cannabidiol (purity of ≥98%, 100 mg/ml cannabidiol in sesame oil with anhydrous ethanol with added sweetener (sucralose) and strawberry flavoring). Started at 5 mg/kg/day and is increased by 2.5-5 mg/kg at 3-5 day intervals to a target dose of 20 mg/kg/day.
Cannabidiol/ EpidiolexEXPERIMENTALAll subjects will receive the experimental Epidiolex (cannabidiol) oral solution to be taken at home twice a day, and will be treated on an outpatient basis. The drug will be taken for 24 weeks unless the subject chooses to participate in the extension phase of the study, in which case the subject will continue to receive the drug for one additional year or until the drug is approved for clinical use for the treatment of cognitive impairments in patients with Sturge-Weber syndrome.
Presymptomatic Epidiolex TreatmentEXPERIMENTALEpidiolex will be started at 2.5 mg/kg/day divided twice daily. The dose will increase weekly as tolerated over the next 5 weeks to a target dose of 20 mg/kg/day.
GWP42003 1000 milligrams (mg)/dayACTIVE_COMPARATORParticipants received GWP42003 (100 mg/milliliter \[mL\]), 5 mL twice daily (BID) administered orally, 5 mL in the morning and 5 mL in the evening for 6 weeks.
GWP42003EXPERIMENTALGWP42003 was administered orally at a dose of 50 mg up to 250 mg, BID, in the fasted state in the morning and evening, for 10 weeks. Following randomization, participants entered a 2-week dose escalation period to achieve their maximum tolerated dose, up to 500 mg, and maintained this dose for the rest of the treatment period. Participants were then followed for 1 week.
GWP42003 200 milligrams (mg)/day DoseEXPERIMENTALParticipants self-administered one x 100 mg GWP42003 capsule twice daily for 8 weeks (the first dose was 30 minutes before breakfast \[fasted\] and the second was 30 minutes before the evening meal \[typically 12 hours apart\]).
GWP42003 400 mg/day DoseEXPERIMENTALParticipants self-administered two x 100 mg GWP42003 capsules twice daily for 8 weeks (the first dose was 30 minutes before breakfast \[fasted\] and the second was 30 minutes before the evening meal \[typically 12 hours apart\]).
GWP42003 800 mg/day DoseEXPERIMENTALParticipants self-administered four x 100 mg GWP42003 capsules twice daily for 8 weeks (the first dose was 30 minutes before breakfast \[fasted\] and the second was 30 minutes before the evening meal \[typically 12 hours apart\]).
GWP42004 and placeboACTIVE_COMPARATORContains GWP42004 5 mg and placebo (excipients only)
1:1 GWP42003 : GWP42004ACTIVE_COMPARATORContains 5 mg each of GWP42003 and GWP42004
20:1 GWP42003 : GWP42004ACTIVE_COMPARATORContains 100 mg GWP42003 and 5 mg GWP42004
GWP42003 and placeboACTIVE_COMPARATORContains 100 mg GWP42003 and placebo (excipients only)
IPACTIVE_COMPARATOREpidiolex (Cannabidiol) is a colorless to yellow solution in a 100mL vial that is to be administered with a 5mL syringe.The starting dosage is 2.5 mg/kg twice daily, or 5 mg/kg/day. After one week, the dosage can be increased to a maintenance dosage of 5mg/kg twice daily, or 10 mg/kg/day. Patients who are tolerating Epidiolex at 10mg/kg per day and require further reduction of seizures may benefit from a dosage increase up to a maximum recommended maintenance. Dosage of 10mg/kg twice daily (20mg/kg/day), in weekly increments of 2.5 mg/kg twice daily(5mg/kg/day), as tolerated. For patients in whom a more rapid titration from 10 mg/kg/day to 20 mg/kg/day is warranted, the dosage may be increased to no more frequently than every other day administration of the 20 mg/kg/day. Dosage resulted in somewhat greater reductions in seizure rates than the recommended maintenance dosage of 10 mg/kg/day, but with an increase in adverse reactions.
Cannabidiol (CBD)EXPERIMENTALCannabidiol - oral CBD solution 400 mg

Interventions

NameTypeDescription
Cannabidiol (CBD)DRUGCBD 100 mg/mL Oral Solution
PlaceboDRUGPlacebo for Cannabidiol oral solution 100mg/mL oral solution
CBD-OSDRUGOral solution, twice daily
Cannabidiol Oral Solution [Epidiolex]DRUG100 mg BID for three months Placebo oral solution for three months
CBD 400 mgDRUGSubjects in Arm CBD 400 mg will receive 400mg of Cannabidiol in each of the three test sessions
CBD 800 mgDRUGSubjects in Arm CBD 800 mg will receive 800mg of Cannabidiol in each of the three test sessions
Control (placebo)DRUGSubjects will receive a harmless, inactive solution to compare and validate the results of the other arms of the study
cannabidiolDRUGPurified CBD, is a strawberry flavored liquid, in sesame oil, provided as 100 mg/ml, extracted from high CBD plant material. A component of cannabis that has evidence suggesting it is relatively safe and perhaps neuroprotective, reduces tremor, anxiety and psychosis and is well tolerated in PD. Besides limiting the psychoactive effect of THC, studies support that CBD has anti-inflammatory, anticonvulsant, anti-oxidant, anxiolytic and antipsychotic properties.
Epidiolex 100 mg/mL Oral SolutionDRUGEpidiolex is a prescription form of cannabidiol used to treat seizures. Epidiolex will be started at 2.5 mg/kg/day divided twice daily. The dose will increase weekly as tolerated over the next 5 weeks to a target dose of 20 mg/kg/day.
GWP42003DRUGGWP42003 was an oral solution containing 100 mg/mL CBD dissolved in the excipients sesame oil, ethanol, sucralose and strawberry flavoring.
GWP42003 200 mg/day DoseDRUGGWP42003 was presented as Licaps® size double zero (Size 00) hard gelatin capsules containing 100 mg of CBD dissolved in vehicle (Gelucire 44/14).
GWP42003 400 mg/day DoseDRUGGWP42003 was presented as Licaps® Size 00 hard gelatin capsules containing 100 mg of CBD dissolved in vehicle (Gelucire 44/14).
GWP42003 800 mg/day DoseDRUGGWP42003 was presented as Licaps® Size 00 hard gelatin capsules containing 100 mg of CBD dissolved in vehicle (Gelucire 44/14).
GWP42004DRUG5 mg capsules, PO, BD, 91 days
Unlock Study Design Details

Eligibility Criteria

Age Range12 Years to 35 Years
SexALL
Healthy VolunteersYes
Study Sites19

CHR-P patients: Inclusion Criteria 1. 12 to 35 years of age inclusive, willing and able to provide written informed consent/assent. 2. Meet criteria for either the Attenuated Psychotic Symptoms (APS) or Brief Limited Intermittent Psychotic Symptoms (BLIPS) subgroups of the CHR-P state, defined usi...

Countries:AustriaCanadaFinlandGermanyGreeceItalyNetherlandsSpainSwitzerlandUnited KingdomUnited StatesPolandRomania
Unlock Eligibility Criteria

Recent Changes (Last 90 Days)

LOWOct 2, 2026NCT07233239lastUpdatePostDate: changed
LOWOct 2, 2026NCT07233239lastUpdatePostDate: changed
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

What is CBD used for in opiate addiction?

CBD is being studied as a treatment for opiate addiction, specifically for its effects on cue-induced craving in drug-abstinent heroin-dependent adults. The Phase 2 research examines acute and short-term effects of the small molecule in this population. It is an investigational use and is not an approved treatment for opiate addiction.

Who is developing CBD for opiate addiction?

Jazz Pharmaceuticals plc, which trades on Nasdaq under the ticker JAZZ, is the developer of CBD for opiate addiction. The company is sponsoring the clinical research evaluating the small molecule in heroin-dependent adults. Jazz Pharmaceuticals is the sponsor associated with this program.

What phase is CBD in for opiate addiction?

CBD is in Phase 2 development for opiate addiction. The program has one completed Phase 2 trial, and no active trials are currently listed. Because it remains in clinical development, CBD is investigational for this indication and has not been established as an approved therapy for opiate addiction.

What clinical trials is CBD in for opiate addiction?

CBD has been studied in the Phase 2 trial NCT02539823, titled Acute and Short-term Effects of CBD on Cue-induced Craving in Drug-abstinent Heroin-dependent Humans. The completed trial enrolled 45 participants in the United States, was randomized, double-blind, and placebo-controlled, and included adults aged 21 years and older.

How was the CBD opiate addiction trial designed?

The Phase 2 trial NCT02539823 was a randomized, double-blind, placebo-controlled study of CBD in drug-abstinent heroin-dependent adults. It enrolled 45 participants of all sexes, aged 21 years and older, at sites in the United States, and it did not select participants by biomarker. The trial is completed.