Phase 2
N=125
Evaluation of an Oral Cannabidiol (CBD)-Terpene Formulation on Sleep Physiology in Participants With Insomnia
Insomnia
Bottom Line
View on ClinicalTrials.gov: NCT05233761 ↗Enrolled (actual)
125
Serious AEs
0.0%
Results posted
Sep 2025
Primary outcome: Primary: Percentage of Time Spent in the Combination of Slow Wave Sleep (SWS) and Rapid Eye Movement (REM) Sleep — 43.0; 41.8 Percentage of total sleep time — p=0.0350
Study Design & Population
- Study type
- Interventional
- Phase
- Phase 2
- Interventions
- Defined CBD (Drug); Placebo (Drug)
- Age
- Adult, Older Adult · 25+ yrs
- Sex
- All
- Sponsor
- Defined Research
- Primary completion
- Jul 2022
Outcome Measures
| Outcome | Result | p-value |
|---|---|---|
| PRIMARY Percentage of Time Spent in the Combination of Slow Wave Sleep (SWS) and Rapid Eye Movement (REM) Sleep |
43.0; 41.8 | 0.0350 sig |
| SECONDARY Objective Secondary Outcome Measures of Sleep Physiology |
162.5; 155.0; 71.1; 67.7; 91.4; 90.0 | 0.0117 sig |
| SECONDARY Objective Secondary Outcome Measures of Sleep Physiology |
162.5; 155.0; 71.1; 67.7; 91.4; 90.0 | 0.0117 sig |
| SECONDARY Subjective Secondary Outcome Measure of Sleep Physiology |
5.9; 5.6; 5.6; 5.1; 5.6; 4.8 | 0.53 |
Summary
Insomnia is a disorder in which people have inadequate or poor-quality sleep due to a number of factors, such as difficulty falling asleep, waking up frequently during the night with difficulty returning to sleep, waking up too early in the morning, or having unrefreshing sleep. Defined CBD is a capsule composed of highly purified (>99.9%) hemp-derived cannabidiol (CBD) and terpenes produced as a potential sleep aid for people with insomnia. This product contains no detectable Delta-9-tetrahydrocannabinol (Delta-9-THC). This trial is specifically designed to evaluate the efficacy of Defined CBD on sleep physiology in people with insomnia.
Eligibility Criteria
Inclusion Criteria
- Has provided a signed and dated informed consent form.
- Presence of chronic insomnia defined as self-reported difficulty initiating (latency to persistent sleep >30 min) and/or maintaining sleep (>30 mins awake during the middle of the night, or waking >30 mins before desired waking time on three or more nights per week) for at least 3 months.
- Insomnia Severity Index score >15.
- Male or female aged 25-70 years.
- Is willing to comply with all study procedures throughout the entire study, including:
- Wearing a sleep-tracking device on their wrist throughout entire clinical study.
- Ensuring that the sleep-tracking device is connected to their smartphone via Bluetooth on a daily basis so that sleep data can be collected on a daily basis.
- Ensuring that the sleep-tracking device is charged before going to bed each night, ensuring that sleep data can be collected on a daily basis.
- Is willing to receive and respond to daily text (SMS) notifications for the duration of the entire clinical study.
- During the treatment phases of the study, is willing to take the treatment for at least four nights in each week.
- On the nights in which the participant takes the treatment, is willing to abstain from excessive alcohol intake (>two drinks/day).
- On the nights in which the participant takes the treatment, is willing to refrain from drinking alcohol two hours before bedtime.
- Female subjects who:
- Are postmenopausal, with amenorrhea for at least one year before the screening interview, OR
- Are surgically sterile, OR
- If of childbearing potential agree to practice effective double barrier methods of contraception (e.g., condom + diaphragm; condom or diaphragm + spermicidal gel or foam), from the time of the signing of informed consent through the last dose of study treatment, or agree to completely abstain from intercourse.
- Self-reported bedtime between 9 pm and midnight on four-seven nights per week.
- Owns a smartphone.
Exclusion Criteria
- Self-reported body mass index > 32 calculated from patient's height (m) and weight (kg); weight (kg)/square height (m²).
- Insomnia associated with clinically diagnosed sleep apnea (AHI greater than 15 events/hour), or movement disorders such as restless legs, periodic limb movement (PLM) (greater than 30 events/hour or greater than five events/hour with associated PLM arousals).
- Are currently participating in a formal behavioral therapy program to facilitate sleep.
- History of epilepsy or seizures.
- History of liver disease.
- Serious head injury or stroke within the past year.
- Psychiatric disorders including major depression, bipolar, anxiety, or schizophrenia.
- History of suicide attempt or current suicide ideation.
- Evidence of any clinically significant, severe or unstable, acute or chronically progressive medical or surgical disorder (including planned medical procedures that may impact sleep), or any condition that may interfere with the absorption, metabolism, distribution, or excretion of the study drug.
- Patients with a history of cardiovascular disease including poorly controlled hypertension, ischemic heart disease, arrhythmia, or severe heart failure.
- Untreated metabolic disorder such as diabetes.
- Medical conditions that result in frequent need to get out of bed (e.g. nocturia).
- History of drug or alcohol abuse, including past or present history of cannabis dependence.
- Inability to refrain from greater than two standard drinks/day of alcohol consumption for study duration.
- Current cigarette smoker.
- Currently chronic (daily) cannabis user.
- Use of any substance with psychotropic effects or properties known to affect sleep/wake, including neuroleptics, morphine/opioid derivatives, antihistamines, stimulants, anti-depressants, clonidine, within one week prior to screening.
- Use of any over-the-counter sleep medications including tryptophan, valerian root (Valeriana officinalis), kava (Piper
Data sourced from ClinicalTrials.gov (NCT05233761). Outcome figures and adverse-event rates are extracted automatically from the registry's posted results and are provided for clinician reference, not as a substitute for the primary publication.