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Sub-chronic Effects of 5-hydroxytryptophan on Mood and Emotional Processing in Healthy Volunteers

NCT01514409 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 33

Last updated 2012-01-23

No results posted yet for this study

Summary

5-hydroxytryptophan (5-HTP) is a nutritional supplement sold in many health food stores, and is taken in order to raise levels of serotonin in the brain. Serotonin is a neurotransmitter that is involved in the regulation of mood.

Previous research has assessed the effects of raising serotonin levels using tryptophan (the precursor of 5-HTP) and serotonergic antidepressants on emotional processing in healthy volunteers. However, to date there has been no human trial investigating the effects of 5-HTP on emotional processing in healthy volunteers.

Thus, the current study aims to assess the effects of 5-HTP, on emotional processing and mood in healthy volunteers.

Conditions

  • Mood

Interventions

DIETARY_SUPPLEMENT

5-Hydroxytryptophan

Thirty-three participants were randomly allocated in a double-blind manner to receive either 3x50mg capsules of 5-HTP or placebo (silica) for 14 days. 5-HTP is produced commercially by extraction from the seeds of the African plant griffonia simplicifolia.

DIETARY_SUPPLEMENT

Pharmaceutical grade silica

Pharmaceutical grade silica was utilized as placebo

Sponsors & Collaborators

  • Northumbria University

    lead OTHER

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
TRIPLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
65 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2011-05-31
Primary Completion
2011-08-31
Completion
2011-08-31

Countries

  • United Kingdom

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT01514409 on ClinicalTrials.gov