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CompletedNCT01685073Updated May 22, 2019Results posted

The Role of Sleep in the Treatment of Cannabis Use Disorders

A Phase 2/3 interventional study of Zolpidem extended-release and MET/CBT in Drug Addiction, sponsored by Johns Hopkins University. Completed at 1 site in United States. Open to participants aged 18 Years to 55 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2019-05-22.

Sponsored by Johns Hopkins University · Phase 2/3, Interventional, and Treatment

Phase
Phase 2/3
Study type
Interventional
Enrollment
127
Allocation
Randomized
Ages
18 Years to 55 Years
Sex
All
01

Study summary

The number of people seeking treatment for marijuana-related problems is on the rise, yet there is no currently accepted medication proven to help them quit. Frequent marijuana users have reported that they have trouble sleeping when they try to quit, and that the loss of sleep can lead to relapse. This research is designed to measure the severity of sleep problems in people as they are trying to quit heavy use of marijuana, and to investigate whether extended-release zolpidem (Ambien CR®) can improve quit rates among people trying to stop using marijuana.

02

Conditions studied

  • Drug Addiction

Keywords

  • marijuana
  • cannabis
  • treatment
  • insomnia
  • relapse
03

In context

Substance-Related Disorders

2,124 studies on the registry are indexed under Substance-Related Disorders; 393 are open to participants now.

This study's enrollment of 127 is above the median of 108 across 1,727 interventional studies indexed under Substance-Related Disorders.

Browse Substance-Related Disorders studies →

Lead sponsor

Johns Hopkins University is the lead sponsor of 1,783 studies on the registry; 313 are open to participants now.

Of its 203 completed or terminated interventional studies of FDA-regulated products, 140 (69%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 55 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  1. Age 18-55 years.
  2. Recent problematic use of cannabis
  3. Cannabis use impacts sleep

Exclusion criteria

Exclusion Criteria:

  1. Dependent on drugs other than cannabis or nicotine, or current Axis I psychiatric disorder
  2. Moderate sleep apnea or periodic limb movement disorder
  3. Pregnant, breast feeding, or planning to become pregnant within the next 3 months
  4. Current condition associated with severe cognitive/social impairment
  5. Allergy to any ingredient in extended-release zolpidem or prior adverse reaction to zolpidem
  6. Current use of drugs that affect metabolism via cytochrome P450 or current illness resulting in severe hepatic impairment
  7. Current use of hypnotic medications
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Study design

Phase
Phase 2 / Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Investigator)
Enrollment
127 participants (actual)

Study arms

  • Experimental
    Zolpidem

    Participants receive active zolpidem nightly in addition to psychosocial therapy during 12-week treatment of a cannabis use disorder

    Drug: Zolpidem extended-release · Behavioral: MET/CBT

  • Placebo comparator
    Placebo

    Participants receive placebo medication during a 12-week psychosocial treatment for a cannabis use disorder

    Behavioral: MET/CBT

Interventions

  • DrugZolpidem extended-release

    nightly administration of zolpidem extended-release

    Also known as: Ambien CR

  • BehavioralMET/CBT

    a standardized 12-week therapy consisting of motivational enhancement therapy (MET) and cognitive behavior therapy (CBT) for treating cannabis use disorders will be administered to all study participants

06

What researchers measure

Primary outcomes

  1. Sleep Efficiency as Assessed by Percentage of Time Asleep While in Bed

    Percentage of time asleep while in bed is measured using ambulatory polysomnography (PSG) equipment.

    Time frame: Week 1 of treatment

  2. Number of Participants With Cannabis Abstinence as Assessed by Urine Cannabis Testing

    Qualitative urine cannabis testing outcomes of study participants; missing drop-outs presumed positive; Negative = THCCOOH \<50ng/mL via EIA.

    Time frame: Week 12

07

Results

Posted May 22, 2019
Limitations and caveats
There was a significant number of participant drop-outs in both study arms

Participant flow

Participant flow — Overall Study
MilestoneZolpidemPlacebo
Started6265
Completed3233
Not completed3032
Withdrew: Lost to follow-up68
Withdrew: Withdrawal by subject2424

Outcome measures

PrimarySleep Efficiency as Assessed by Percentage of Time Asleep While in Bed

Percentage of time asleep while in bed is measured using ambulatory polysomnography (PSG) equipment.

Time frame:
Week 1 of treatment
Reported as:
Mean · percentage of time asleep while in bed
Sleep Efficiency as Assessed by Percentage of Time Asleep While in Bed
percentage of time asleep while in bedZolpidemPlacebo
Sleep Efficiency as Assessed by Percentage of Time Asleep While in Bed78 ± 1674 ± 19
PrimaryNumber of Participants With Cannabis Abstinence as Assessed by Urine Cannabis Testing

Qualitative urine cannabis testing outcomes of study participants; missing drop-outs presumed positive; Negative = THCCOOH \<50ng/mL via EIA.

Time frame:
Week 12
Reported as:
Count of participants · Participants
Number of Participants With Cannabis Abstinence as Assessed by Urine Cannabis Testing
ParticipantsZolpidemPlacebo
Negative urine test1710
Positive urine test4555

Adverse events

Collected over 12 weeks. Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Zolpidem0/62 (0%)2/62 (3.2%)30/62 (48.4%)
Placebo0/65 (0%)0/65 (0%)35/65 (53.8%)
Most frequent serious events
Most frequent serious events
EventZolpidemPlacebo
Stroke, cerebrovascular accidentVascular disorders1/620/65
Urinary tract infectionInfections and infestations1/620/65
Most frequent other events
Most frequent other events
EventZolpidemPlacebo
Cold symptomsGeneral disorders6/629/65
nauseaGastrointestinal disorders7/627/65
emesisGastrointestinal disorders6/626/65
toothacheGeneral disorders5/623/65
HeadacheGeneral disorders4/625/65
Sleep DifficultiesGeneral disorders2/625/65

Baseline characteristics

Age, Continuous
Age, Continuous(years)ZolpidemPlaceboTotal
Mean31 ± 932 ± 931 ± 9
Sex: Female, Male
Sex: Female, Male(Participants)ZolpidemPlaceboTotal
Female252348
Male374279
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)ZolpidemPlaceboTotal
Hispanic or Latino527
Not Hispanic or Latino5763120
Unknown or Not Reported000
Tobacco Smoking Status
Tobacco Smoking Status(Participants)ZolpidemPlaceboTotal
Count of participants363672
08

Study locations

1 site
  • Johns Hopkins University
    Baltimore, Maryland 21224, United States
09

References and documents

Publications

  • Pacek LR, Herrmann ES, Smith MT, Vandrey R. Sleep continuity, architecture and quality among treatment-seeking cannabis users: An in-home, unattended polysomnographic study. Exp Clin Psychopharmacol. 2017 Aug;25(4):295-302. doi: 10.1037/pha0000126. PubMed 28782982 ↗

Study documents

  • Protocol and statistical analysis plan · Dec 15, 2015

Documents are hosted by the registry — open the source record to download them.

Individual participant data

Plan to share: No

10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on May 22, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT01685073
Lead sponsor
Johns Hopkins University
Collaborators
National Institute on Drug Abuse (NIDA)
Responsible party
Sponsor
First posted
Sep 13, 2012
Start date
Sep 2012
Primary completion
Jul 2018
Completion
Jul 2018
Results posted
May 22, 2019
Last update
May 22, 2019

Study contacts

Ryan Vandrey, PhD
principal investigator · Johns Hopkins University

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in May 2019. You cannot join it, but the record below documents what was studied.

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