DrugSupplement
5-Hydroxytryptophan clinical trials
- studies test it
- 16
- open now
- 3
- in phase 3
- 2
- first study started
- 2006
Keep track of what changes. Save the 5-Hydroxytryptophan studies recruiting or about to start, and get an email each week — studies that open, close, add sites or post results.
Watch these studiesHow studies write it
Studies that test it under each name
Other names
Combined with it in one product
Studies by the year they started
16 studies that test it; most in 2021 (4)
| Year | Studies |
|---|---|
| 2006 | 1 |
| 2009 | 1 |
| 2011 | 1 |
| 2014 | 1 |
| 2015 | 1 |
| 2016 | 1 |
| 2018 | 1 |
| 2019 | 1 |
| 2020 | 2 |
| 2021 | 4 |
| 2023 | 1 |
| 2025 | 1 |
By phase
A phase 1/2 study counts in both.
- Phase 2
- 8
- Phase 3
- 2
- Phase 4
- 2
- No phase
- 6
What it is tested for
Each study’s main condition, where its own words name it.
Who runs them
Industry 0 · Other 16
University of Utah (2) · University of Alberta (1) · Nova Southeastern University (1) · Elizabeth Berry-Kravis (1) · National University of Singapore (1) · University Hospital, Ghent (1) · Perry Renshaw (1) · Maastricht University Medical Center (1)
Often tested with
Tested in the same studies.
Creatine (4) · Creatine monohydrate (3) · Ergoloid Mesylates (1) · Levodopa (1)
Studies
Open first, then newest update. How each study uses 5-Hydroxytryptophan is read from its arms, and is right about nine times in ten.
Testing it · 16
- 5HTP Regulation Of Asthma In ChildrenRecruitingPhase 2Indiana UniversityNCT04160910Written as 5-Hydroxytryptophan
- 5-HTP and Creatine for Depression R33 PhaseRecruitingPhase 2University of UtahNCT05895747Written as Low Dose 5-hydroxytryptophan
- The Effect of 5-hydroxytryptophan on ADHD Traits and Eye MovementsRecruitingNot applicableUniversity of SheffieldNCT07777328Written as 5-hydroxytryptophan (food supplement) 200mg
- Effects of 5HTP on the Injured Human Spinal CordActive, not recruitingPhase 2/3University of AlbertaNCT04520178Written as 5-Hydroxytryptophan 100 MG
- Effects of Daily Supplementation of 5-HTP on Body CompositionCompletedNot applicableNova Southeastern UniversityNCT05216406Written as 5-HTP
- ERG/5-HTP in Fragile X Syndrome (FXS)CompletedPhase 2Elizabeth Berry-KravisNCT05030129Written as 5-Hydroxytryptophan
- 5-HTP and Creatine for DepressionCompletedPhase 2University of UtahNCT04395183Written as 5-Hydroxytryptophan 100 MG
- Effects of 5HTP and LDOPA on CNS Excitability After SCISuspendedPhase 2/3Jessica M D'AmicoNCT04000919Written as 5HTP
- Placebo-controlled Trial of 5-hydroxytryptophan and Creatine for SSRI or SNRI Augmentation in Treatment Resistant Depression in FemalesTerminatedPhase 4Brent Michael Kious, MD, PhDNCT02922725Written as 5-hydroxytryptophan and Creatine
- Impact of Nutritional Supplementation on Sleep Quality and Gut Microbiome Composition in Older AdultsCompletedNot applicableNational University of SingaporeNCT04078724Written as 5-HTP
- 5-HTP in Patients With IBD in Clinical and Biologic Remission:Effect on Fatigue ScoresCompletedPhase 2University Hospital, GhentNCT03574948Written as 5-HTP
- 5-hydroxytryptophan and Creatine for Treatment Resistant Depression Associated With Hypoxia in FemalesCompletedPhase 4Perry RenshawNCT02356107Written as 5-hydroxytryptophan and Creatine monohydrate
- The Effect of Serotonergic Modulation on Intestinal Permeability and Visceral Hypersensitivity in Healthy Individuals and Irritable Bowel Syndrome (IBS) PatientsCompletedNot applicableMaastricht University Medical CenterNCT00731003Written as Oxitriptan
- Effects of Exercise and 5-HTP on Cortisol LevelsStatus unknownNot applicableBenedictine UniversityNCT02187341Written as 5-HTP
- Sub-chronic Effects of 5-hydroxytryptophan on Mood and Emotional Processing in Healthy VolunteersCompletedNot applicableNorthumbria UniversityNCT01514409Written as 5-Hydroxytryptophan
- The Effect of 5-Hydroxytryptophan (5-HTP) on SatietyCompletedPhase 2TNONCT00328913Written as 5-hydroxytryptophan (food supplement)
Codes
What other systems call 5-Hydroxytryptophan · ClinicalTrials.gg INT007636
- MeSH (NLM) D0069165-HydroxytryptophanConfirmed ClinicalTrials.gov, NLM
- UNII (FDA) C1LJO185Q9OXITRIPTANConfirmed FDA, NLM
- RxNorm 94One source FDA
| System | Code | Name there | Checked by |
|---|---|---|---|
| MeSH (NLM) | D006916 | 5-Hydroxytryptophan | Confirmed ClinicalTrials.gov, NLM |
| UNII (FDA) | C1LJO185Q9 | OXITRIPTAN | Confirmed FDA, NLM |
| RxNorm | 94 | — | One source FDA |
“Confirmed” means two independent publishers link the code to this drug; “one source”, one does and its name agrees.