- Conditions
- Major Depressive Disorder
- Interventions
- Low Dose 5-hydroxytryptophan, High Dose 5-hydroxytryptophan, Low Dose Creatine Monohydrate, High Dose Creatine Monohydrate, Placebo
- Drug
- Lead sponsor
- University of Utah
- Other
- Eligibility
- 18 Years to 65 Years
- Enrollment
- 106 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2023 – 2027
- U.S. locations
- 1
- States / cities
- Salt Lake City, Utah
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Search by query text, NCT ID, condition, intervention, sponsor, city, state, recruitment status, phase, study type, healthy volunteer eligibility, sex, or age. Results are retrieved from ClinicalTrials.gov and synchronized into the directory. Search pages remain noindex by default.
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Showing 1–13
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matching trials from the live ClinicalTrials.gov search.
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- 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
- 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
- 30 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2020 – 2026
- U.S. locations
- 1
- States / cities
- Louisville, Kentucky
- Conditions
- Sleep
- Interventions
- Placebo Capsule, POWEROFF Capsule
- Dietary Supplement
- Lead sponsor
- NYU Langone Health
- Other
- Eligibility
- 18 Years to 65 Years
- Enrollment
- 60 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2017 – 2018
- U.S. locations
- 1
- States / cities
- New York, New York
- Conditions
- Plasma Cortisol
- Interventions
- 5-HTP, Placebo
- Dietary Supplement
- Lead sponsor
- Benedictine University
- Other
- Eligibility
- 18 Years to 60 Years
- Enrollment
- 12 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2014 – 2015
- U.S. locations
- 1
- States / cities
- Lisle, Illinois
- Conditions
- Major Depressive Disorder
- Interventions
- 5-hydroxytryptophan and Creatine monohydrate
- Drug
- Lead sponsor
- Perry Renshaw
- Other
- Eligibility
- 18 Years to 64 Years · Female only
- Enrollment
- 15 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2015 – 2016
- U.S. locations
- 1
- States / cities
- Salt Lake City, Utah
- 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
- Conditions
- Spinal Cord Injuries
- Interventions
- 5HTP, L-DOPA, Placebo oral tablet, Carbidopa
- Drug
- Lead sponsor
- Jessica M D'Amico
- Other
- Eligibility
- 18 Years to 65 Years
- Enrollment
- 30 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2019 – 2023
- U.S. locations
- 1
- States / cities
- Louisville, Kentucky
- Conditions
- Acne, Premenstrual Syndrome
- Interventions
- Skincare Routine, MINDBODYSKIN Supplement
- Other · Dietary Supplement
- Lead sponsor
- Clearstem Skincare
- Industry
- Eligibility
- 18 Years and older · Female only
- Enrollment
- 60 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2023 – 2024
- U.S. locations
- 1
- States / cities
- Santa Monica, California
- Conditions
- Mild or Moderate Asthma With Allergic Sensitization
- Interventions
- 5-Hydroxytryptophan, Placebo
- Drug
- Lead sponsor
- Indiana University
- Other
- Eligibility
- 8 Years to 18 Years
- Enrollment
- 20 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2021 – 2026
- U.S. locations
- 1
- States / cities
- Indianapolis, Indiana
- 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
- Conditions
- Major Depressive Disorder
- Interventions
- 5-hydroxytryptophan and Creatine, Placebo control
- Drug · Other
- Lead sponsor
- Brent Michael Kious, MD, PhD
- Other
- Eligibility
- 25 Years to 40 Years · Female only
- Enrollment
- 32 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2016 – 2020
- U.S. locations
- 1
- States / cities
- Salt Lake City, Utah
- Conditions
- Tobacco Use, Smoking, Tobacco Smoking
- Interventions
- Marlboro Gold Box, Newport Box, Non-combusted cigarette variant 42001401, Non-combusted cigarette variant 42001399, Non-combusted cigarette variant 40007386, Non-combusted cigarette variant 42001402
- Other
- Lead sponsor
- RAI Services Company
- Industry
- Eligibility
- 21 Years and older
- Enrollment
- 120 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2022
- U.S. locations
- 1
- States / cities
- Stockbridge, Georgia