Examination of a Soy-Based Supplement for Major Depression
Public ClinicalTrials.gov record NCT00042380. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
A Phase 2A Study of Soy Isoflavones in the Treatment of Major Depression
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
The purpose of this study is to find out if the soy-based dietary supplement Novasoy (Registered Trademark) is effective for the short-term treatment of clinical depression. This study will also evaluate whether Novasoy (Registered Trademark) is effective in treating the anxiety that often accompanies depression and will assess the best dose level. Novasoy (Registered Trademark) is a marketed botanical dietary supplement containing soy isoflavones. The active form of the soy isoflavone genistin may be a novel treatment for neuropsychiatric illnesses. The soy isoflavone's specific hormonal properties may also have beneficial effects on brain function in depressed patients. This study will be conducted in two phases. During Phase I, participants will stop all medications for at least 1 week. A psychiatric and medical examination will be conducted. During Phase II, participants will be randomly assigned to receive either Novasoy (Registered Trademark) or a placebo (an inactive pill) for 8 weeks. Participants who do not respond to treatment after 5 weeks will be given a higher dose of their assigned medication. After the 8-week period, participants will be monitored for up to 3 months before being referred back to their clinician for further treatment.
Study identification
- NCT ID
- NCT00042380
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Phase 2
- Enrollment
- 120 participants
Conditions and interventions
Conditions
Eligibility (public fields only)
- Age range
- Not listed
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Jun 30, 2002
- Primary completion
- Not listed
- Completion
- Mar 31, 2005
- Last update posted
- Mar 3, 2008
2002 – 2005
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| National Institute of Mental Health (NIMH) | Bethesda | Maryland | 20892 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT00042380, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Mar 3, 2008 · Synced Sep 2, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT00042380 live on ClinicalTrials.gov.