NCT05216406

Brief Summary

The purpose of this investigation was to compare supplementation with 5-HTP to placebo on indices of body composition. A randomized trial compared a sample of 48 resistance-trained individuals taking either 100 mg of 5-hydroxytryptophan supplementation or a placebo. The investigators tested anthropometric measurements using a multi-frequency bioelectrical impedance device (InBody® 270). The primary outcome (i.e., changes in anthropometric measurements) was assessed at the first visit (pre-test-) and post-test (8 weeks). Secondary outcomes include resting heart rate, blood pressure, and dietary intake.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
65

participants targeted

Target at P50-P75 for not_applicable

Timeline
Completed

Started Jan 2021

Shorter than P25 for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

January 1, 2021

Completed
4 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

April 30, 2021

Completed
15 days until next milestone

Study Completion

Last participant's last visit for all outcomes

May 15, 2021

Completed
7 months until next milestone

First Submitted

Initial submission to the registry

December 7, 2021

Completed
2 months until next milestone

First Posted

Study publicly available on registry

January 31, 2022

Completed
2.1 years until next milestone

Results Posted

Study results publicly available

February 20, 2024

Completed
Last Updated

February 12, 2025

Status Verified

February 1, 2025

Enrollment Period

4 months

First QC Date

December 7, 2021

Results QC Date

July 11, 2022

Last Update Submit

February 10, 2025

Conditions

Keywords

Body Composition5-HTP

Outcome Measures

Primary Outcomes (1)

  • Body Composition

    The percentage of fat, bone, and muscle was assessed pre and post visit using multi-frequency bioelectrical impedance device (InBody® 270).

    8 weeks

Secondary Outcomes (3)

  • Dietary Habits

    8 weeks

  • Blood Pressure

    8 weeks

  • Resting Heart Rate

    8 weeks

Study Arms (2)

5-HTP

EXPERIMENTAL

The dietary supplement (100 mg of 5-hydroxytryptophan; CLEANMOOD™) was provided by NURA™ (Irvine, California USA). Subjects were instructed to consume one capsule daily at their convenience for 8 weeks.

Dietary Supplement: 5-HTP

Control

PLACEBO COMPARATOR

The placebo consisted of maltodextrin. Subjects were instructed to consume one capsule daily at their convenience for 8 weeks.

Other: Placebo

Interventions

5-HTPDIETARY_SUPPLEMENT

CLEANMOOD is an organic 5-Hydroxytryptophan (5-HTP) ingredient.

Also known as: CLEANMOOD™
5-HTP
PlaceboOTHER

Maltodextrin capsule

Also known as: Control
Control

Eligibility Criteria

Age18 Years - 60 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64)

You may qualify if:

  • Healthy or free of disease
  • Minimum of 1 year of regular physical activity. Regular physical activity is defined by a minimum of 150 minutes of aerobic activity or performing muscle-strengthening exercises at least 2 days a week.

You may not qualify if:

  • Physically inactive
  • Regularly used sleep aids of any kind
  • Currently taking selective serotonin reuptake inhibitors (SSRIs) and/or 5-HTP containing supplements.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

IHP

Boca Raton, Florida, 33432, United States

Location

Related Publications (3)

  • Maffei ME. 5-Hydroxytryptophan (5-HTP): Natural Occurrence, Analysis, Biosynthesis, Biotechnology, Physiology and Toxicology. Int J Mol Sci. 2020 Dec 26;22(1):181. doi: 10.3390/ijms22010181.

    PMID: 33375373BACKGROUND
  • Stamatakis E, Straker L, Hamer M, Gebel K. The 2018 Physical Activity Guidelines for Americans: What's New? Implications for Clinicians and the Public. J Orthop Sports Phys Ther. 2019 Jul;49(7):487-490. doi: 10.2519/jospt.2019.0609.

    PMID: 31258047BACKGROUND
  • Cangiano C, Ceci F, Cairella M, Cascino A, Del Ben M, Laviano A, Muscaritoli M, Rossi-Fanelli F. Effects of 5-hydroxytryptophan on eating behavior and adherence to dietary prescriptions in obese adult subjects. Adv Exp Med Biol. 1991;294:591-3. doi: 10.1007/978-1-4684-5952-4_73. No abstract available.

    PMID: 1722953BACKGROUND

MeSH Terms

Interventions

5-Hydroxytryptophan

Intervention Hierarchy (Ancestors)

TryptophanAmino Acids, AromaticAmino Acids, CyclicAmino AcidsAmino Acids, Peptides, and Proteins

Limitations and Caveats

The primary limitation of this study was the lack of control for exercise. Although subjects were instructed to maintain the same training habits, it is certainly possible that training changed.

Results Point of Contact

Title
Dr. Jose Antonio
Organization
Nova Southeastern University

Study Officials

  • Jose Antonio, PhD

    Nova Southeastern University

    PRINCIPAL INVESTIGATOR

Publication Agreements

PI is Sponsor Employee
No
Restrictive Agreement
No

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
DOUBLE
Who Masked
PARTICIPANT, INVESTIGATOR
Masking Details
All subjects and investigators were blinded.
Purpose
OTHER
Intervention Model
PARALLEL
Model Details: This study followed a placebo (PLA)-controlled, double-blind and parallel-group design.
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Co-principal Investigator

Study Record Dates

First Submitted

December 7, 2021

First Posted

January 31, 2022

Study Start

January 1, 2021

Primary Completion

April 30, 2021

Study Completion

May 15, 2021

Last Updated

February 12, 2025

Results First Posted

February 20, 2024

Record last verified: 2025-02

Data Sharing

IPD Sharing
Will not share

Locations