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Double-Blind Naltrexone in Compulsive Sexual Behavior

A Double-Blind, Placebo-Controlled Study of Naltrexone in Compulsive Sexual Behavior

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00467558
Enrollment
7
Registered
2007-04-30
Start date
2007-05-31
Completion date
2010-06-30
Last updated
2012-05-18

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Compulsive Sexual Behavior

Keywords

Impulse Control Disorder, Compulsive Sexual Behavior

Brief summary

The goal of the proposed study is to evaluate the efficacy and safety of naltrexone in compulsive sexual behavior. Twenty subjects with DSM-IV compulsive sexual behavior will receive 8 weeks of naltrexone or placebo. The hypothesis to be tested is that naltrexone will be effective in reducing the urges to act out sexually in patients with compulsive sexual behavior. The proposed study will provide needed data on the treatment of a disabling disorder that currently lacks a clearly effective treatment.

Detailed description

The proposed study will consist of 8 weeks of treatment with either naltrexone or placebo in 20 subjects with compulsive sexual behavior.

Interventions

DRUGNaltrexone

daily

DRUGSugar pill

daily

Sponsors

University of Minnesota
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender
ALL
Age
21 Years to 75 Years
Healthy volunteers
No

Inclusion criteria

1. men and women age 21-75; 2. current diagnosis of compulsive sexual behavior

Exclusion criteria

1. unstable medical illness or clinically significant abnormalities on prestudy laboratory tests or physical examination; 2. history of seizures; 3. myocardial infarction within 6 months; 4. current pregnancy or lactation, or inadequate contraception in women of childbearing potential; 5. clinically significant suicidality; 6. current or recent (past 1 month) DSM-IV substance abuse or dependence; 7. illegal substance within 2 weeks of study initiation; 8. initiation of psychotherapy or behavior therapy from a mental health professional within 3 months prior to study baseline; 9. initiation of a psychotropic medication within 2 months prior to study inclusion; 10. previous treatment with naltrexone; and 11. treatment with investigational medication or depot neuroleptics within 3 months, with fluoxetine within 6 weeks, or with other psychotropics within 2 weeks prior to study baseline

Design outcomes

Primary

MeasureTime frameDescription
Yale Brown Obsessive Compulsive Scale Modified for Compulsive Sexual Behavior (YBOCS)Assessed at each visit (every two weeks) until participation in the study was done (Week 8)The YBOCS is a reliable and valid, 10-item, clinician-administered scale that rates buying symptoms within the last seven days, on a severity scale from 0 to 4 for each item (total scores range from 0 to 40 with higher scores reflecting greater illness severity).

Secondary

MeasureTime frameDescription
Clinical Global Impression Scale - SeverityAssessed at each visit (every two weeks) until participation in the study was done (Week 8)The CGI consists of two reliable and valid 7-item Likert scales used to assess severity in clinical symptoms. The scale ranges from 1 = very much improved to 7 = very much worse. The CGI severity scale was used at each visit and ranges from 1 = not ill at all to 7 = among the most extremely ill.

Countries

United States

Participant flow

Participants by arm

ArmCount
Naltrexone
Naltrexone 50mg-150mg by mouth per day.
4
Placebo
Placebo pills (1-3 pills daily) depending upon dose prescribed by study physician
3
Total7

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyLost to Follow-up20

Baseline characteristics

CharacteristicPlaceboNaltrexoneTotal
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
0 Participants0 Participants0 Participants
Age, Categorical
Between 18 and 65 years
3 Participants4 Participants7 Participants
Age Continuous35.67 years
STANDARD_DEVIATION 10.69
27.67 years
STANDARD_DEVIATION 7.37
31.87 years
STANDARD_DEVIATION 9.31
Region of Enrollment
United States
3 participants4 participants7 participants
Sex: Female, Male
Female
0 Participants0 Participants0 Participants
Sex: Female, Male
Male
3 Participants4 Participants7 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
— / —— / —
other
Total, other adverse events
0 / 40 / 3
serious
Total, serious adverse events
0 / 40 / 3

Outcome results

Primary

Yale Brown Obsessive Compulsive Scale Modified for Compulsive Sexual Behavior (YBOCS)

The YBOCS is a reliable and valid, 10-item, clinician-administered scale that rates buying symptoms within the last seven days, on a severity scale from 0 to 4 for each item (total scores range from 0 to 40 with higher scores reflecting greater illness severity).

Time frame: Assessed at each visit (every two weeks) until participation in the study was done (Week 8)

Population: Reported scores are Mean and standard deviation for Subjects last visit (Week 8 or last-observation carried forward).

ArmMeasureValue (MEAN)Dispersion
NaltrexoneYale Brown Obsessive Compulsive Scale Modified for Compulsive Sexual Behavior (YBOCS)8 units on a scaleStandard Deviation 7
PlaceboYale Brown Obsessive Compulsive Scale Modified for Compulsive Sexual Behavior (YBOCS)9.33 units on a scaleStandard Deviation 1.15
Secondary

Clinical Global Impression Scale - Severity

The CGI consists of two reliable and valid 7-item Likert scales used to assess severity in clinical symptoms. The scale ranges from 1 = very much improved to 7 = very much worse. The CGI severity scale was used at each visit and ranges from 1 = not ill at all to 7 = among the most extremely ill.

Time frame: Assessed at each visit (every two weeks) until participation in the study was done (Week 8)

Population: Reported scores are Mean and standard deviation for Subjects last visit (Week 8 or last-observation carried forward).

ArmMeasureValue (MEAN)Dispersion
NaltrexoneClinical Global Impression Scale - Severity2.33 units on a scaleStandard Deviation 1.53
PlaceboClinical Global Impression Scale - Severity2.67 units on a scaleStandard Deviation 0.58

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026