5-HTP and Creatine for Depression R33 Phase
Public ClinicalTrials.gov record NCT05895747. 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
31P-MRS and Resting State Functional Connectivity Analysis of the Effects of 5-hydroxytryptophan and Creatine for Antidepressant Augmentation in Patients With SSRI/SNRI-resistant Major Depressive Disorder
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
This is a three-armed clinical trial examining the effect of 5-hydroxytryptophan and creatine monohydrate as augmenting agents for the treatment of depression. Subjects will be randomized between 5-HTP 100mg BID + creatine 5g daily, 5-HTP 200mg BID + creatine 10g daily, vs double placebo, for 8 weeks. The ability of the interventions to affect biomarkers associated with depression will be assessed using brain phosphorus magnetic resonance spectroscopy, functional connectivity imaging, and plasma serotonin levels.
Study identification
- NCT ID
- NCT05895747
- Recruitment status
- Recruiting
- Study type
- Interventional
- Phase
- Phase 2
- Enrollment
- 106 participants
Conditions and interventions
Conditions
Interventions
- Low Dose 5-hydroxytryptophan Drug
- High Dose 5-hydroxytryptophan Drug
- Low Dose Creatine Monohydrate Drug
- High Dose Creatine Monohydrate Drug
- Placebo Drug
Drug
Eligibility (public fields only)
- Age range
- 18 Years to 65 Years
- 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
- Sep 27, 2023
- Primary completion
- Jun 30, 2027
- Completion
- Sep 29, 2027
- Last update posted
- Aug 26, 2026
2023 – 2027
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| University of Utah Department of Psychiatry | Salt Lake City | Utah | 84108 | Recruiting |
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 NCT05895747, 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 Aug 26, 2026 · Synced Sep 6, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT05895747 live on ClinicalTrials.gov.