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Alcohol Use DisordersNCT02226367

Prazosin Augmentation of Outpatient Treatment of Alcohol Use Disorders in Active Duty Soldiers With and Without PTSD

A study testing prazosin hydrochloride in people with Alcohol Use Disorders and Stress Disorders, Posttraumatic, run by Seattle Institute for Biomedical and Clinical Research at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The purpose of the study is to evaluate if the drug prazosin: will decrease alcohol use in active duty members of the military who served in Iraq and/or Afghanistan and determine if presence or absence of posttraumatic stress disorder affects treatment. Read more about this study

Who is it for?
Ages 21 years and older
What is being tested?
prazosin hydrochloride
Type of treatment
Pill or oral medicine
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
158 participants
Where
1 siteUnited States
Study dates
Jan 2015to 20 Oct 2018
Phase
Interventional
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 21 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Male and female active duty returnees from the conflicts in Iraq and/or Afghanistan over the age of 21 with a current Diagnostic and Statistical Manual of Mental Disorders IV diagnosis of Alcohol Abuse or Dependence or a current Diagnostic and Statistical Manual of Mental Disorders 5 diagnosis of Alcohol Use Disorder
  • Participant in Army Substance Abuse Program (6 or 12 week program)
  • Recent alcohol consumption: more than 14 (women) or 21 (men) drinks per week for at least 2 weeks in the past 60 day period OR at least 2 days of heavy drinking in the past 60 day period (4 or more drinks for women and 5 or more drinks for men)
  • Good general medical health (see Exclusion Criteria below)
  • Women of childbearing potential must agree to abstain from sexual relations that could result in pregnancy or use an effective method of birth control acceptable to both participant and the study clinician during the study. Men are not required to use contraception during the study.
  • Concomitant use of naltrexone and/or antabuse must be stable for 2 weeks prior to Baseline
  • Capacity to provide informed consent
  • English fluency

Who cannot join

  • Current diagnosis of opioid, methamphetamine, cocaine, marijuana, or other illegal substance dependence or abuse.
  • Signs or symptoms of alcohol withdrawal at the time of initial consent
  • Current diagnosis of schizophrenia, other psychotic disorder, manic phase of bipolar disorder, or cognitive disorder.
  • Suicide attempt or suicidal ideation with intent in the past month.
  • Significant acute or chronic medical illness, including unstable angina, recent myocardial infarction, history of congestive heart failure, preexisting hypotension (systolic <100) or orthostatic hypotension (defined as a systolic drop > 20 mmHg after two minutes standing accompanied by lightheadedness or syncope); insulin-dependent diabetes mellitus; chronic renal or hepatic failure, acute pancreatitis, Meniere's disease. Liver function tests more than 5 times the upper limit.
  • Concomitant use of trazodone (due to increased risk of priapism). There will be a two week trazodone washout period before the baseline visit.
Show all 9Show fewer
  • Concomitant use of an alpha-1 blocker medication or insulin
  • Use of prazosin in the 4 weeks prior to Baseline.
  • History of prazosin sensitivity/allergy

Trial locations and contacts

1 site in 1 country.

United States1 site
  • Madigan Army Medical Center

    Tacoma, Washington, 98431

Other trials in United States

About this study

The purpose of the study is to evaluate if the drug prazosin:

  • will decrease alcohol use in active duty members of the military who served in Iraq and/or Afghanistan and
  • determine if presence or absence of posttraumatic stress disorder affects treatment.
Read the detailed description

The proposed study is a 19-week, titration to stable dose, randomized, two-group parallel-design, double-blind, placebo-controlled trial to evaluate the efficacy of prazosin for decreasing alcohol use in 200 active duty Service Members who served in the conflicts in Iraq and/or Afghanistan who are receiving standard outpatient treatment for alcohol use disorders at Joint Base Lewis-McChord. Treatment groups will be stratified by presence or absence of posttraumatic stress disorder (PTSD) and by assignment to the 6-week or 12-week Army Substance Abuse Program. The hypotheses are that: 1) prazosin is more effective than placebo for alcohol use disorders in these Service Members; and 2) that prazosin effect size will be greater in Service Members with PTSD than without PTSD.

Being tested
prazosin hydrochloride, placebo
Keywords
prazosin, alcohol use disorders, posttraumatic stress disorder, PTSD, combat trauma, military, alpha-1 adrenoreceptor antagonist
Medical subject headings
Alcoholism, Stress Disorders, Post-Traumatic, Combat Disorders

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • prazosin hydrochlorideDrug

    Also called prazosin, Pfizer Minipress

    study drug arm prazosin

  • placeboDrug

    Also called sugar pill

    study drug arm placebo

Study groups in NCT02226367
Study groupRoleWhat they receive
prazosin hydrochlorideActive comparatorPrazosin hydrochloride taken orally. Titrated to a maximum dose 4 mg in the morning, 6 mg in the afternoon, and 10 mg at bedtime. (20 mg total daily at maximum dose) Dose increase will occur if the participant does not have unacceptable side effects.
Receives: Drug: prazosin hydrochloride
placeboPlacebo comparatorPlacebo. Oral capsule with comparable appearance to active treatment. Titrated in same manner as active treatment.
Receives: Drug: placebo

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Change in Penn Alcohol Craving Scale Score

    Penn Alcohol Craving Scale (PACS)

    The PACS is a self-report paper-and-pencil instrument. This five-item, self-report measure includes questions about the frequency, intensity, and duration of craving, the ability to resist drinking, and asks for an overall rating of craving for alcohol for the previous week. Each question is scaled from 0 to 6. Total scores are 0 to 30. Lower scores indicate less alcohol craving. Higher scores indicate more alcohol craving.

    Measured: Change at Week 13 from Baseline

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted27 Aug 2014 (estimated)
  2. Study startJan 2015
  3. Primary completion20 Sep 2018
  4. Study completion20 Oct 2018

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
158 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT02226367
Sponsor's protocol ID
W81XWH-12-2-0094
Status last verified
Jan 2023
First submitted
15 Jul 2014
Last updated
3 Feb 2023
Data monitoring committee
Yes

Questions about this trial

What is this clinical trial studying?

A study testing prazosin hydrochloride in people with Alcohol Use Disorders and Stress Disorders, Posttraumatic, run by Seattle Institute for Biomedical and Clinical Research at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 8 inclusion and 9 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 3 Feb 2023. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

Yes. Results are posted in the registry (first posted 3 Feb 2023). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Change in Penn Alcohol Craving Scale Score (time frame: Change at Week 13 from Baseline). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 3 Feb 2023.

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