This site became the new on June 19th. Learn more.
Show more Menu IMPORTANT: Listing of a study on this site does not reflect endorsement by the National Institutes of Health. Talk with a trusted healthcare professional before volunteering for a study. Read more... Menu IMPORTANT: Talk with a trusted healthcare professional before volunteering for a study. Read more... Menu
Give us feedback

Dutasteride for the Reduction of Alcohol Use in Male Drinkers

This study has been completed.
National Institute on Alcohol Abuse and Alcoholism (NIAAA)
Information provided by (Responsible Party):
Jonathan Covault, UConn Health Identifier:
First received: December 15, 2010
Last updated: February 9, 2017
Last verified: February 2017
The purpose of this study is to evaluate whether dutasteride is safe and effective for reducing alcohol use in male drinkers who want to stop or reduce their drinking. The investigators hypothesize that at a dosage of 1mg/day, dutasteride will be well tolerated and that, compared to placebo treatment, dutasteride will result in a greater reduction in the amount of alcohol consumed per week. The study sample size is of a pilot scale and is designed to provide additional support for the study hypothesis and provide an estimate of likely effect sizes in order to design a more definitive study.

Condition Intervention Phase
Alcoholism Alcohol Abuse Alcohol Dependence Drug: Dutasteride Drug: Placebo Phase 4

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Participant, Care Provider, Investigator, Outcomes Assessor
Primary Purpose: Treatment
Official Title: Placebo Controlled Pilot Study of Dutasteride for the Reduction of Alcohol Use in Male Drinkers

Resource links provided by NLM:

Further study details as provided by Jonathan Covault, UConn Health:

Primary Outcome Measures:
  • Change Number of Standard Drinks Per Week. [ Time Frame: Baseline (average weekly drinking for 90 day period prior to screening) vs. End Point (average weekly drinking weeks 7 and 8 of treatment) ]
    Change in Average Standard Drinks (14 gr ethanol) per week: last 2 weeks of treatment (wk 7-8) minus baseline average drinking average from baseline 90 day drinking history

Secondary Outcome Measures:
  • Change in Standard Drinks Per Week - Moderation by Genetic Variation [ Time Frame: Baseline (average weekly drinking for 90 day period prior to screening) vs. End Point (average weekly drinking weeks 7 and 8 of treatment) ]
    Moderation of primary outcome measure [change in standard drinks per week from baseline to end point (average weeks 7 and 8 of treatment)] by genetic variation rs12529 in neuroactive steroid biosynthetic enzyme gene AKR1C (AKR1C3*2 C-allele associated with alcohol use disorder)

Enrollment: 47
Study Start Date: January 2011
Study Completion Date: December 2012
Primary Completion Date: December 2012 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: dutasteride
dutasteride (1 mg oral daily dose) for 8-week treatment period
Drug: Dutasteride
dutasteride 4 mg loading dose followed by 1 mg daily for 8-week treatment period
Other Name: Avodart
Placebo Comparator: Placebo
placebo daily for 8-week treatment period
Drug: Placebo
placebo capsules in same number as active drug, daily for 8-week treatment period
Other Name: Lactose


Ages Eligible for Study:   18 Years to 65 Years   (Adult)
Sexes Eligible for Study:   Male
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Male outpatients age 18 to 65 years
  • Have an average weekly ethanol consumption of >24 standard drinks
  • Be able to read English at the 8th grade or higher level and show no evidence of significant cognitive impairment
  • Be willing to nominate an individual who will know the patient's whereabouts in order to facilitate follow up during the study
  • Be willing to provide signed, informed consent to participate in the study (including a willingness to reduce drinking to non-hazardous levels)

Exclusion Criteria:

  • Have a current, clinically significant physical disease or abnormality on the basis of medical history, physical examination, or routine laboratory evaluation
  • Have a serious psychiatric illness (e.g., schizophrenia, bipolar disorder, severe or psychotic major depression, organic mood or mental disorders, current eating disorder symptoms, or substantial suicide or violence risk) on the basis of history or psychiatric examination
  • Have a current diagnosis of drug dependence (other than nicotine or alcohol dependence)
  • Have a current diagnosis of alcohol dependence who on clinical examination by a physician, are deemed to be too severely alcohol dependent to permit them to participate in a placebo-controlled pilot study
  • Have a history of hypersensitivity to dutasteride
  • Current or past 4 month use of finasteride (Propecia), dutasteride (Avodart) or testosterone
  • Are currently taking psychotropics other than a single antidepressant with stable dose for at least 4 weeks or a non-benzodiazepine sleep medication
  • Are considered by the investigators to be an unsuitable candidate for receipt of an investigational drug
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01262287

United States, Connecticut
University of Connecticut Health Center
Farmington, Connecticut, United States, 06030
Sponsors and Collaborators
UConn Health
National Institute on Alcohol Abuse and Alcoholism (NIAAA)
Principal Investigator: Jonathan Covault, MD, PhD UConn Health
  More Information

Responsible Party: Jonathan Covault, Professor of Psychiatry, UConn Health Identifier: NCT01262287     History of Changes
Other Study ID Numbers: 11-036-2
P60AA003510 ( US NIH Grant/Contract Award Number )
Study First Received: December 15, 2010
Results First Received: December 17, 2016
Last Updated: February 9, 2017
Individual Participant Data  
Plan to Share IPD: No

Keywords provided by Jonathan Covault, UConn Health:
Randomized Trial
Medication for Heavy Drinking
Dutasteride Treatment

Additional relevant MeSH terms:
Alcohol-Related Disorders
Substance-Related Disorders
Chemically-Induced Disorders
Mental Disorders
5-alpha Reductase Inhibitors
Steroid Synthesis Inhibitors
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action
Hormone Antagonists
Hormones, Hormone Substitutes, and Hormone Antagonists
Physiological Effects of Drugs processed this record on June 26, 2017