Kava Kava for the Treatment of Generalized Anxiety Disorder (GAD)

NCT ID: NCT00083980

Last Updated: 2012-10-19

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

TERMINATED

Clinical Phase

PHASE2

Total Enrollment

16 participants

Study Classification

INTERVENTIONAL

Study Start Date

2002-06-30

Study Completion Date

2004-08-31

Brief Summary

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The purpose of this study is to evaluate the safety and effectiveness of the herbal medicine kava kava for the treatment of generalized anxiety disorder (GAD).

Detailed Description

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Kava kava (KAV) is a plant-derived treatment widely used in Europe to treat anxiety disorders. Several studies suggest that KAV may be effective in reducing anxiety symptoms; however, trial data are limited. This study will compare KAV, the drug venlafaxine-XR (VEN), and placebo for the treatment of GAD.

This study will last 10 weeks. Participants will be randomly assigned to receive KAV, VEN, or placebo for 8 weeks. Participants will then undergo a 1-week tapering of their medication followed by an additional week of observation. Self-report scales and questionnaires will be used to assess the anxiety, depression, and functional impairment of participants. Side effects, vital signs, and laboratory measures will be monitored throughout the study.

Conditions

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Anxiety Disorders

Keywords

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Kava Complementary Therapies Medicine, Herbal

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors

Study Groups

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active antidepressant drug comparator

Venlafaxine ER

Group Type ACTIVE_COMPARATOR

Venlafaxine ER

Intervention Type DRUG

75 to 225 mg daily

Sugar pill

Intervention Type DRUG

Upto 3 per day for venlafainxe and 4 per day for kava placebos.

Sugar pill

Inert placebo pills as duble dummy - up to 4 per day for kava and 3 per day for venlafaxine

Group Type PLACEBO_COMPARATOR

Sugar pill

Intervention Type DRUG

Upto 3 per day for venlafainxe and 4 per day for kava placebos.

Herbal treatment kava

Kava

Group Type EXPERIMENTAL

Sugar pill

Intervention Type DRUG

Upto 3 per day for venlafainxe and 4 per day for kava placebos.

Kava

Intervention Type DRUG

140 to 280 mg per day

Interventions

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Venlafaxine ER

75 to 225 mg daily

Intervention Type DRUG

Sugar pill

Upto 3 per day for venlafainxe and 4 per day for kava placebos.

Intervention Type DRUG

Kava

140 to 280 mg per day

Intervention Type DRUG

Other Intervention Names

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Effexor XR No brand name No brand name

Eligibility Criteria

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Inclusion Criteria

* Diagnosis of generalized anxiety disorder (GAD)
Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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National Center for Complementary and Integrative Health (NCCIH)

NIH

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Jonathan Davidson, MD

Role: PRINCIPAL_INVESTIGATOR

Duke University

Other Identifiers

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R01AT000150-01A1

Identifier Type: NIH

Identifier Source: org_study_id

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