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Intranasal Oxytocin for the Treatment of Alcohol Use Disorder

Randomized, Double Blind, Placebo-Controlled Trial of the Efficacy of Intranasal Oxytocin for the Treatment of Alcohol Use Disorder

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03878316
Enrollment
100
Registered
2019-03-18
Start date
2022-06-29
Completion date
2023-10-13
Last updated
2025-08-07

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

Conditions

Alcohol Misuse, Alcohol Use Disorder

Brief summary

Primary: The primary objective of the study is to compare the efficacy of intranasal oxytocin in reducing the weekly percentage of heavy drinking days over the 10 weeks of maintenance treatment among subjects with moderate to severe Alcohol Use Disorder (AUD). A heavy drinking day is 4 or more drinks per drinking day for women and 5 or more drinks per drinking day for men. Secondary: Secondary objectives include assessment of other measures of the effects of oxytocin compared with placebo on reduction of alcohol use as well as effects on psychological assessments, alcohol craving, alcohol-related consequences, cigarette smoking and other nicotine use, retention in the study, safety, and application site (nares) tolerability throughout the study.

Interventions

DRUGInstranasal Oxytocin

Intranasal Oxytocin - concentrated formulation - 35 IU per dose

Sponsors

National Institute on Alcohol Abuse and Alcoholism (NIAAA)
Lead SponsorNIH

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. Be at least 21 years of age. 2. Have a current (past 12 months) DSM-5 diagnosis of AUD (4 or more symptoms) assessed using the MINI neuropsychiatric interview version 7.0.2 (at least moderate severity, ICD-10-CM Code F10.20 alcohol dependence, uncomplicated). 3. Have a BAC by breathalyzer equal to 0.000 when s/he signed the informed consent document (either just prior to or immediately after signing consent). 4. Be seeking treatment for problems with alcohol reduction in drinking. 5. Be able to verbalize an understanding of the consent form, able to provide written informed consent, verbalize willingness to complete study procedures, able to understand written and oral instructions in English and able to complete the questionnaires required by the protocol. 6. Agree (if the subject is female and of child bearing potential) to use at least one of the following methods of birth control, unless she is surgically sterile, partner is surgically sterile or she is postmenopausal: 1. oral contraceptives, 2. contraceptive sponge, 3. patch, 4. double barrier (diaphragm/spermicidal or condom/spermicidal), 5. intrauterine contraceptive system, 6. etonogestrel implant, 7. medroxyprogesterone acetate contraceptive injection, 8. complete abstinence from sexual intercourse, and/or 9. hormonal vaginal contraceptive ring. 7. Be able to take intranasal investigational products and be willing to adhere to the investigational product regimen. 8. Complete all assessments required at screening and baseline. 9. Have a place to live in the 2 weeks prior to randomization and not be at risk that s/he will lose his/her housing by Study Week 14. 10. Not anticipate any significant problems with transportation arrangements or available time to travel to the study site by Study Week 14. 11. Not have any plans to move within Study Week 14 to a location which would make continued participation in the study impractical. 12. Not have any unresolved legal problems that could jeopardize continuation or completion of the study. 13. Provide contact information of someone, such as a family member, spouse, or significant other, who may be able to contact the subject in case of a missed clinic appointment. 14. Be someone who in the opinion of the investigator would be expected to complete the study protocol. 15. Agree to the schedule of visits, verbally acknowledge that s/he will be able to attend each scheduled visit, participate in phone visits and that s/he does not have any already scheduled events or a job that may substantially interfere with study participation. 16. If taking a medication for depression or anxiety, must have been taking a stable dose in the 2-months prior to randomization and plan to continue during the study. This includes drugs such as the following: * SSRIs * Dual uptake inhibitors * SNRIs * Tricyclic antidepressants * MAOIs * Bupropion 17. Not currently taking oxytocin and agree not to take non-study oxytocin for the duration of the study.

Exclusion criteria

Contact study site for

Design outcomes

Primary

MeasureTime frameDescription
Weekly Percentage of Heavy Drinking DaysWeeks 3-12The primary efficacy endpoint is the weekly percentage of heavy drinking days during the 10-week maintenance treatment period. A heavy drinking day is 4 or more drinks per drinking day for women and 5 or more drinks per drinking day for men. Drinking data will be collected by the Timeline Followback (TLFB) method.

Secondary

MeasureTime frameDescription
Percentage of Subjects Abstinent From AlcoholWeeks 3-12Percentage of subjects abstinent from alcohol during the 10-week Maintenance period
Percentage of Subjects With at Least a 1-level World Health Organization (WHO) Drinking Risk Category Decreaseweeks 3-12Percentage of subjects with at least a 1-level World Health Organization (WHO) drinking risk category decrease from the baseline level to (the period including the 28 days before screening) to the level during the treatment phase (Study Weeks 3-12). The WHO levels of average alcohol consumption per day vary by Sex of participants and are as follows: Males Females Low Risk 1 to 40g 1 to 20g Medium Risk 41 to 60g 21 to 40g High Risk 61 to 100g 41 to 60g Very High Risk 101+g 61+g where 14g = 1 SDU (WHO-2000). In computing the WHO alcohol consumption level, average drinks per day were used, computed as the sum of all drinks in the 28 day period divided by the number of days with non-missing drinking data in that period. Abstinent subjects were included in a separate Abstinent category.
Percentage of Subjects With at Least a 2-level World Health Organization (WHO) Drinking Risk Category Decreaseweeks 3-12Percentage of subjects with at least a 2-level World Health Organization (WHO) drinking risk category decrease from the baseline level to (the period including the 28 days before screening) to the level during the treatment phase (Study Weeks 3-12). The WHO levels of average alcohol consumption per day vary by Sex of participants and are as follows: Males Females Low Risk 1 to 40g 1 to 20g Medium Risk 41 to 60g 21 to 40g High Risk 61 to 100g 41 to 60g Very High Risk 101+g 61+g where 14g = 1 SDU (WHO-2000). In computing the WHO alcohol consumption level, average drinks per day were used, computed as the sum of all drinks in the 28 day period divided by the number of days with non-missing drinking data in that period. Abstinent subjects were included in a separate Abstinent category.
Percentage of Days Abstinent Per Weekweeks 3-12Timeline Follow Back daily drinking data used to calculate the % of days abstinent per week during the 10-week Maintenance period.
Weekly Mean Number of Drinks Per Weekweeks 3-12Weekly mean number of drinks per week during the 10-week Maintenance period.
Weekly Mean Drinks Per Drinking Dayweeks 3-12Weekly mean drinks per drinking day during the 10-week Maintenance period.
Number of Alcohol Use Disorder Symptoms (MINI)week 13The MINI (paper version 7.0.2) is a short structured diagnostic interview, developed jointly by psychiatrists and clinicians in the United States and Europe, for DSM-5 and ICD-10 psychiatric disorders (Sheehan-1998). This scale is a count of the number of alcohol use disorder symptoms. Minimum = 0 and maximum=11. Higher scores indicate worse outcome.
Cigarettes Smoked Per Week Among Smokersweeks 3-12Cigarettes smoked per week among smokers during the 10-week Maintenance period.
Percentage of Subjects With no Heavy Drinking Daysweeks 3-12Percentage of subjects with no heavy drinking days during the 10-week Maintenance period
Other Nicotine Product Use - Days Per Week Among Other Nicotine Product Usersweeks 3-12Other nicotine product use - days per week among other nicotine product users during the Maintenance period
Experiences in Close Relationships-Relationship Structures Questionnaire (ECR-RS) Scores (Attachment-related Anxiety Subscale)weeks 3-12Experiences in Close Relationships-Relationship Structures Questionnaire (ECR-RS) scores (attachment-related anxiety subscale) during the 10-week Maintenance period. Minimum = 0 and maximum = 126. Higher scores are worse outcome.
PROMIS Sleep Disturbances Scoreweeks 3-12PROMIS® (Patient-Reported Outcomes Measurement Information System) Sleep Disturbances score (Short Form 8b) during the 10-week Maintenance period. Scores are T-scores with a mean of 50 and standard deviation of 10. Minimum = 0 and maximum = 100. Higher scores are worse outcome (i.e., more sleep disturbance).
PROMIS Alcohol-related Negative Consequences Scoreweeks 3-12PROMIS® (Patient-Reported Outcomes Measurement Information System) alcohol-related negative consequences score (Long Form) during the 10-week Maintenance period. Scores are T-scores with a mean of 50 and standard deviation of 10. Minimum = 0 and maximum = 100. Higher scores are worse outcome (i.e., more alcohol-related negative consequences).
PROMIS Pain Interference Scoreweeks 3-12PROMIS® (Patient-Reported Outcomes Measurement Information System) Pain Interference score (Short Form 8a) during the 10-week Maintenance period. Scores are T-scores with a mean of 50 and standard deviation of 10. Minimum = 0 and maximum = 100. Higher scores are worse outcome (i.e., more pain interference).
Profile of Moods States (POMS) - Total Mood Disturbanceweeks 3-12Profile of Moods States (POMS) - Total Mood Disturbance during the 10-week Maintenance period. Minimum = -32 and maximum = 200. Higher scores are worse outcome.
Urge to Drink Alcohol Craving Scoreweeks 3-12Urge to Drink alcohol craving score during the 10-week Maintenance period. Minimum = 0 and maximum = 35. Higher scores are worse outcome.
Abstinence From Cigarette Smoking Among Smokersweeks 3-12Abstinence from cigarette smoking among smokers during the 10-week Maintenance period.

Countries

United States

Participant flow

Participants by arm

ArmCount
Intranasal Oxytocin
Oxytocin, 35 IU per dose, intranasally twice-daily. One dose is defined as intranasal spray of 100 μL per each nostril x 5 sprays in alternating nostrils with a 30 second wait between sprays for a total dose volume of 500 μL. The total daily dose of oxytocin will be 70 IU/mL. Instranasal Oxytocin: Intranasal Oxytocin - concentrated formulation - 35 IU per dose
49
Instrasal Placebo
Identically matched placebo administered intranasally twice-daily. One dose is defined as intranasal spray of 100 μL per each nostril x 5 sprays in alternating nostrils with a 30 second wait between sprays for a total dose volume of 500 μL. Instranasal Oxytocin: Intranasal Oxytocin - concentrated formulation - 35 IU per dose
48
Total97

Baseline characteristics

CharacteristicIntranasal OxytocinInstrasal PlaceboTotal
Age, Continuous50.0 years
STANDARD_DEVIATION 10.8
51.1 years
STANDARD_DEVIATION 10.1
50.6 years
STANDARD_DEVIATION 10.4
Ethnicity (NIH/OMB)
Hispanic or Latino
5 Participants1 Participants6 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
42 Participants46 Participants88 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
2 Participants1 Participants3 Participants
Percentage of heavy drinking days74.7 percentage of days
STANDARD_DEVIATION 23
79.8 percentage of days
STANDARD_DEVIATION 21.5
77.2 percentage of days
STANDARD_DEVIATION 22.3
Race (NIH/OMB)
American Indian or Alaska Native
1 Participants0 Participants1 Participants
Race (NIH/OMB)
Asian
1 Participants0 Participants1 Participants
Race (NIH/OMB)
Black or African American
4 Participants5 Participants9 Participants
Race (NIH/OMB)
More than one race
3 Participants0 Participants3 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
1 Participants1 Participants2 Participants
Race (NIH/OMB)
White
39 Participants42 Participants81 Participants
Region of Enrollment
United States
49 participants48 participants97 participants
Sex: Female, Male
Female
21 Participants18 Participants39 Participants
Sex: Female, Male
Male
28 Participants30 Participants58 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 490 / 48
other
Total, other adverse events
44 / 4945 / 48
serious
Total, serious adverse events
0 / 490 / 48

Outcome results

Primary

Weekly Percentage of Heavy Drinking Days

The primary efficacy endpoint is the weekly percentage of heavy drinking days during the 10-week maintenance treatment period. A heavy drinking day is 4 or more drinks per drinking day for women and 5 or more drinks per drinking day for men. Drinking data will be collected by the Timeline Followback (TLFB) method.

Time frame: Weeks 3-12

Population: Full Analysis Set - randomized and received study medication

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Intranasal OxytocinWeekly Percentage of Heavy Drinking Days51.5 percentage of days per weekStandard Error 3.9
Instrasal PlaceboWeekly Percentage of Heavy Drinking Days52.9 percentage of days per weekStandard Error 3.9
Secondary

Abstinence From Cigarette Smoking Among Smokers

Abstinence from cigarette smoking among smokers during the 10-week Maintenance period.

Time frame: weeks 3-12

Population: Full Analysis Set - randomized and received medication

ArmMeasureValue (NUMBER)
Intranasal OxytocinAbstinence From Cigarette Smoking Among Smokers0 percentage of participants
Instrasal PlaceboAbstinence From Cigarette Smoking Among Smokers0 percentage of participants
Secondary

Cigarettes Smoked Per Week Among Smokers

Cigarettes smoked per week among smokers during the 10-week Maintenance period.

Time frame: weeks 3-12

Population: Full Analysis Set - randomized and received medication

ArmMeasureValue (MEAN)Dispersion
Intranasal OxytocinCigarettes Smoked Per Week Among Smokers40.6 number of cigarettes smoked per weekStandard Deviation 32.1
Instrasal PlaceboCigarettes Smoked Per Week Among Smokers45.9 number of cigarettes smoked per weekStandard Deviation 52.8
Secondary

Experiences in Close Relationships-Relationship Structures Questionnaire (ECR-RS) Scores (Attachment-related Anxiety Subscale)

Experiences in Close Relationships-Relationship Structures Questionnaire (ECR-RS) scores (attachment-related anxiety subscale) during the 10-week Maintenance period. Minimum = 0 and maximum = 126. Higher scores are worse outcome.

Time frame: weeks 3-12

Population: Full Analysis Set - randomized and received medication

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Intranasal OxytocinExperiences in Close Relationships-Relationship Structures Questionnaire (ECR-RS) Scores (Attachment-related Anxiety Subscale)2.4 score on a scaleStandard Error 0.1
Instrasal PlaceboExperiences in Close Relationships-Relationship Structures Questionnaire (ECR-RS) Scores (Attachment-related Anxiety Subscale)2.4 score on a scaleStandard Error 0.1
Secondary

Number of Alcohol Use Disorder Symptoms (MINI)

The MINI (paper version 7.0.2) is a short structured diagnostic interview, developed jointly by psychiatrists and clinicians in the United States and Europe, for DSM-5 and ICD-10 psychiatric disorders (Sheehan-1998). This scale is a count of the number of alcohol use disorder symptoms. Minimum = 0 and maximum=11. Higher scores indicate worse outcome.

Time frame: week 13

Population: Full Analysis Set - randomized and received medication

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Intranasal OxytocinNumber of Alcohol Use Disorder Symptoms (MINI)3.9 Number of alcohol use disorder symptomsStandard Error 0.3
Instrasal PlaceboNumber of Alcohol Use Disorder Symptoms (MINI)4.2 Number of alcohol use disorder symptomsStandard Error 0.3
Secondary

Other Nicotine Product Use - Days Per Week Among Other Nicotine Product Users

Other nicotine product use - days per week among other nicotine product users during the Maintenance period

Time frame: weeks 3-12

Population: Full Analysis Set - randomized and received medication

ArmMeasureValue (MEAN)Dispersion
Intranasal OxytocinOther Nicotine Product Use - Days Per Week Among Other Nicotine Product Users4.9 days per weekStandard Deviation 1.9
Instrasal PlaceboOther Nicotine Product Use - Days Per Week Among Other Nicotine Product Users5.4 days per weekStandard Deviation 2.3
Secondary

Percentage of Days Abstinent Per Week

Timeline Follow Back daily drinking data used to calculate the % of days abstinent per week during the 10-week Maintenance period.

Time frame: weeks 3-12

Population: Full Analysis Set - randomized and received study medication

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Intranasal OxytocinPercentage of Days Abstinent Per Week23.2 percentage of days per weekStandard Error 2.5
Instrasal PlaceboPercentage of Days Abstinent Per Week22.6 percentage of days per weekStandard Error 2.5
Secondary

Percentage of Subjects Abstinent From Alcohol

Percentage of subjects abstinent from alcohol during the 10-week Maintenance period

Time frame: Weeks 3-12

Population: Full Analysis Set - randomized and received medication

ArmMeasureValue (NUMBER)
Intranasal OxytocinPercentage of Subjects Abstinent From Alcohol0 percentage of participants
Instrasal PlaceboPercentage of Subjects Abstinent From Alcohol2.1 percentage of participants
Secondary

Percentage of Subjects With at Least a 1-level World Health Organization (WHO) Drinking Risk Category Decrease

Percentage of subjects with at least a 1-level World Health Organization (WHO) drinking risk category decrease from the baseline level to (the period including the 28 days before screening) to the level during the treatment phase (Study Weeks 3-12). The WHO levels of average alcohol consumption per day vary by Sex of participants and are as follows: Males Females Low Risk 1 to 40g 1 to 20g Medium Risk 41 to 60g 21 to 40g High Risk 61 to 100g 41 to 60g Very High Risk 101+g 61+g where 14g = 1 SDU (WHO-2000). In computing the WHO alcohol consumption level, average drinks per day were used, computed as the sum of all drinks in the 28 day period divided by the number of days with non-missing drinking data in that period. Abstinent subjects were included in a separate Abstinent category.

Time frame: weeks 3-12

Population: Full Analysis Set - randomized and received study medication

ArmMeasureValue (NUMBER)
Intranasal OxytocinPercentage of Subjects With at Least a 1-level World Health Organization (WHO) Drinking Risk Category Decrease59.6 percentage of participants
Instrasal PlaceboPercentage of Subjects With at Least a 1-level World Health Organization (WHO) Drinking Risk Category Decrease53.2 percentage of participants
Secondary

Percentage of Subjects With at Least a 2-level World Health Organization (WHO) Drinking Risk Category Decrease

Percentage of subjects with at least a 2-level World Health Organization (WHO) drinking risk category decrease from the baseline level to (the period including the 28 days before screening) to the level during the treatment phase (Study Weeks 3-12). The WHO levels of average alcohol consumption per day vary by Sex of participants and are as follows: Males Females Low Risk 1 to 40g 1 to 20g Medium Risk 41 to 60g 21 to 40g High Risk 61 to 100g 41 to 60g Very High Risk 101+g 61+g where 14g = 1 SDU (WHO-2000). In computing the WHO alcohol consumption level, average drinks per day were used, computed as the sum of all drinks in the 28 day period divided by the number of days with non-missing drinking data in that period. Abstinent subjects were included in a separate Abstinent category.

Time frame: weeks 3-12

Population: Full Analysis Set - randomized and received study medication

ArmMeasureValue (NUMBER)
Intranasal OxytocinPercentage of Subjects With at Least a 2-level World Health Organization (WHO) Drinking Risk Category Decrease23.4 percentage of participants
Instrasal PlaceboPercentage of Subjects With at Least a 2-level World Health Organization (WHO) Drinking Risk Category Decrease23.4 percentage of participants
Secondary

Percentage of Subjects With no Heavy Drinking Days

Percentage of subjects with no heavy drinking days during the 10-week Maintenance period

Time frame: weeks 3-12

Population: Full Analysis Set - randomized and received medication

ArmMeasureValue (NUMBER)
Intranasal OxytocinPercentage of Subjects With no Heavy Drinking Days2.1 percentage of participants
Instrasal PlaceboPercentage of Subjects With no Heavy Drinking Days6.3 percentage of participants
Secondary

Profile of Moods States (POMS) - Total Mood Disturbance

Profile of Moods States (POMS) - Total Mood Disturbance during the 10-week Maintenance period. Minimum = -32 and maximum = 200. Higher scores are worse outcome.

Time frame: weeks 3-12

Population: Full Analysis Set - randomized and received medication

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Intranasal OxytocinProfile of Moods States (POMS) - Total Mood Disturbance8.9 score on a scaleStandard Error 2.4
Instrasal PlaceboProfile of Moods States (POMS) - Total Mood Disturbance7.6 score on a scaleStandard Error 2.4
Secondary

PROMIS Alcohol-related Negative Consequences Score

PROMIS® (Patient-Reported Outcomes Measurement Information System) alcohol-related negative consequences score (Long Form) during the 10-week Maintenance period. Scores are T-scores with a mean of 50 and standard deviation of 10. Minimum = 0 and maximum = 100. Higher scores are worse outcome (i.e., more alcohol-related negative consequences).

Time frame: weeks 3-12

Population: Full Analysis Set - randomized and received medication

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Intranasal OxytocinPROMIS Alcohol-related Negative Consequences Score48.5 T-scoreStandard Error 0.6
Instrasal PlaceboPROMIS Alcohol-related Negative Consequences Score47.7 T-scoreStandard Error 0.6
Secondary

PROMIS Pain Interference Score

PROMIS® (Patient-Reported Outcomes Measurement Information System) Pain Interference score (Short Form 8a) during the 10-week Maintenance period. Scores are T-scores with a mean of 50 and standard deviation of 10. Minimum = 0 and maximum = 100. Higher scores are worse outcome (i.e., more pain interference).

Time frame: weeks 3-12

Population: Full Analysis Set - randomized and received medication

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Intranasal OxytocinPROMIS Pain Interference Score52.2 T-scoreStandard Error 1
Instrasal PlaceboPROMIS Pain Interference Score52.5 T-scoreStandard Error 1
Secondary

PROMIS Sleep Disturbances Score

PROMIS® (Patient-Reported Outcomes Measurement Information System) Sleep Disturbances score (Short Form 8b) during the 10-week Maintenance period. Scores are T-scores with a mean of 50 and standard deviation of 10. Minimum = 0 and maximum = 100. Higher scores are worse outcome (i.e., more sleep disturbance).

Time frame: weeks 3-12

Population: Full Analysis Set - randomized and received study medication

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Intranasal OxytocinPROMIS Sleep Disturbances Score51.0 T-scoreStandard Error 0.7
Instrasal PlaceboPROMIS Sleep Disturbances Score51.3 T-scoreStandard Error 0.7
Secondary

Urge to Drink Alcohol Craving Score

Urge to Drink alcohol craving score during the 10-week Maintenance period. Minimum = 0 and maximum = 35. Higher scores are worse outcome.

Time frame: weeks 3-12

Population: Full Analysis Set - randomized and received medication

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Intranasal OxytocinUrge to Drink Alcohol Craving Score13.6 score on a scaleStandard Error 0.7
Instrasal PlaceboUrge to Drink Alcohol Craving Score13.2 score on a scaleStandard Error 0.7
Secondary

Weekly Mean Drinks Per Drinking Day

Weekly mean drinks per drinking day during the 10-week Maintenance period.

Time frame: weeks 3-12

Population: Full Analysis Set - randomized and received medication

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Intranasal OxytocinWeekly Mean Drinks Per Drinking Day6.2 standard drinking units (SDUs) per weekStandard Error 0.3
Instrasal PlaceboWeekly Mean Drinks Per Drinking Day6.3 standard drinking units (SDUs) per weekStandard Error 0.3
Secondary

Weekly Mean Number of Drinks Per Week

Weekly mean number of drinks per week during the 10-week Maintenance period.

Time frame: weeks 3-12

Population: Full Analysis Set - randomized and received medication

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Intranasal OxytocinWeekly Mean Number of Drinks Per Week33.1 standard drinking units (SDUs) per weekStandard Error 2.2
Instrasal PlaceboWeekly Mean Number of Drinks Per Week34.7 standard drinking units (SDUs) per weekStandard Error 2.3

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