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Serotonin Precursor

5-HTP + Carbidopa for Spinal Cord Injury (5-HTP only Trial)

Phase 2 & 3
Recruiting
Led By Jessica D'Amico, PhD
Research Sponsored by University of Alberta
Eligibility Criteria Checklist
Specific guidelines that determine who can or cannot participate in a clinical trial
Must have
Be older than 18 years old
Must not have
History of tumors
Reduced kidney function or disease
Timeline
Screening 3 weeks
Treatment Varies
Follow Up pre drug-intake, 30minutes, 60minutes, 90minutes and 120minutes post drug-intake
Awards & highlights
Approved for 10 Other Conditions
All Individual Drugs Already Approved

Summary

This trial will study the effects of 5-HTP on nerve function and movement in people with spinal cord injuries of varying degrees of severity.

Who is the study for?
This trial is for individuals who have had a spinal cord injury at least six months ago. It's not suitable for those with kidney or liver disease, heart issues, psychiatric disorders, epilepsy, glaucoma, blood diseases, endocrine dysfunction, stomach ulcers or those on certain medications like antidepressants and CNS depressants.
What is being tested?
The study tests how 5-HTP affects nervous system activity and motor skills in people with spinal cord injuries. Participants will take four different treatments (including a placebo) across four visits in a randomized order without knowing which one they're receiving each time.
What are the potential side effects?
Possible side effects of the drugs tested may include gastrointestinal discomforts such as nausea or diarrhea; sleep disturbances; mood changes; muscle pain; and potential interactions with other medications leading to more serious conditions.

Eligibility Criteria

Exclusion Criteria

You may be eligible for the trial if you check “No” for criteria below:
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I have had tumors in the past.
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I have kidney problems.
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I have a history of seizures or epilepsy.
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I am currently taking medication that affects my central nervous system.
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My bone marrow is not functioning properly.
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I am currently taking levodopa.
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I have been diagnosed with wide angle glaucoma.
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I have a history of heart disease, including heart attacks or irregular heartbeats.
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I have had stomach ulcers in the past.
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My liver is not working properly.
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I am currently taking medication for depression or Parkinson's disease.
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I have been diagnosed with coronary artery disease.
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I have heart problems that are not well-managed.
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I am currently taking medication that affects serotonin levels.
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I am currently taking iron supplements.
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I am not in a coma or severely depressed due to medications.
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I am currently taking lithium.
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I have been diagnosed with phenylketonuria.
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I am currently taking antidepressants that affect serotonin.
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I am currently taking amphetamine.
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I am currently taking metoclopramide.
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I have a blood disorder.
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I am currently taking tricyclic antidepressants.
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I am currently taking phenothiazine medication.
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I am currently taking medication that affects dopamine in my brain.

Timeline

Screening ~ 3 weeks
Treatment ~ Varies
Follow Up ~pre drug-intake, 30minutes, 60minutes, 90minutes and 120minutes post drug-intake
This trial's timeline: 3 weeks for screening, Varies for treatment, and pre drug-intake, 30minutes, 60minutes, 90minutes and 120minutes post drug-intake for reporting.

Treatment Details

Study Objectives

Study objectives can provide a clearer picture of what you can expect from a treatment.
Primary study objectives
Change in flexor reflex/spasms
Change in functional movement performance
Change in motoneuron excitability
+1 more
Secondary study objectives
Serum analysis of 5HIAA (UofL Cohort only)
Serum analysis of cortisol (UofL Cohort only)
Serum analysis of serotonin (UofL Cohort only)
+1 more

Awards & Highlights

Approved for 10 Other Conditions
This treatment demonstrated efficacy for 10 other conditions.
All Individual Drugs Already Approved
Therapies where all constituent drugs have already been approved are likely to have better-understood side effect profiles.

Trial Design

4Treatment groups
Active Control
Placebo Group
Group I: High-dose 5HTPActive Control2 Interventions
100mg 5-HTP in combination with 50mg carbidopa
Group II: Low-dose 5HTPActive Control2 Interventions
50mg 5-HTP in combination with 50mg carbidopa
Group III: CarbidopaPlacebo Group1 Intervention
50mg carbidopa only
Group IV: PlaceboPlacebo Group1 Intervention
Placebo comparator

Find a Location

Who is running the clinical trial?

University of AlbertaLead Sponsor
942 Previous Clinical Trials
434,379 Total Patients Enrolled
Wings for LifeOTHER
7 Previous Clinical Trials
828 Total Patients Enrolled
University of LouisvilleLead Sponsor
348 Previous Clinical Trials
77,348 Total Patients Enrolled
Jessica D'Amico, PhDPrincipal InvestigatorUniversity of Alberta
3 Previous Clinical Trials
60 Total Patients Enrolled

Media Library

5-Hydroxytryptophan (Serotonin Precursor) Clinical Trial Eligibility Overview. Trial Name: NCT04520178 — Phase 2 & 3
Spinal Cord Injury Research Study Groups: Carbidopa, High-dose 5HTP, Low-dose 5HTP, Placebo
Spinal Cord Injury Clinical Trial 2023: 5-Hydroxytryptophan Highlights & Side Effects. Trial Name: NCT04520178 — Phase 2 & 3
5-Hydroxytryptophan (Serotonin Precursor) 2023 Treatment Timeline for Medical Study. Trial Name: NCT04520178 — Phase 2 & 3
~3 spots leftby Jun 2025