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ClinicalTrials.gov public records Last synced Sep 23, 2026, 10:42 AM EDT

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Showing 1–4 of 4 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Completed Not applicable Interventional Accepts healthy volunteers Results available

Effects of Daily Supplementation of 5-HTP on Body Composition

NCT05216406
Conditions
Body Composition
Interventions
5-HTP, Placebo
Dietary Supplement · Other
Lead sponsor
Nova Southeastern University
Other
Eligibility
18 Years to 60 Years
Enrollment
65 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Boca Raton, Florida
Active, not recruiting Phase 2Phase 3 Interventional

Effects of 5HTP on the Injured Human Spinal Cord

NCT04520178
Conditions
Spinal Cord Injuries
Interventions
5-Hydroxytryptophan 100 MG, 5-Hydroxytryptophan, Carbidopa, Placebo
Drug
Lead sponsor
University of Alberta
Other
Eligibility
18 Years to 65 Years
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2026
U.S. locations
1
States / cities
Louisville, Kentucky
Completed Phase 2 Interventional Results available

ERG/5-HTP in Fragile X Syndrome (FXS)

NCT05030129
Conditions
Fragile X Syndrome
Interventions
5-Hydroxytryptophan, Ergoloid Mesylates, Matching placebo for Ergoloid mesylates, Matching placebo for 5-Hydroxytryptophan
Drug
Lead sponsor
Elizabeth Berry-Kravis
Other
Eligibility
18 Years to 45 Years · Male only
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Chicago, Illinois
Completed Phase 2 Interventional Results available

5-HTP and Creatine for Depression

NCT04395183
Conditions
Major Depressive Disorder
Interventions
5-Hydroxytryptophan 100 MG, Creatine monohydrate, placebo matched to 5-HTP, Placebo
Drug
Lead sponsor
University of Utah
Other
Eligibility
25 Years to 40 Years
Enrollment
43 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Salt Lake City, Utah