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A phase II, randomized, double-blind, placebo-controlled, in parallel groups clinical trial to assess the safety and efficacy of dietary supplementation with tryptophan to achieve weight loss, and its neuropsychological effects in adolescents with obesity.

A phase II, randomized, double-blind, placebo-controlled, in parallel groups clinical trial to assess the safety and efficacy of dietary supplementation with tryptophan to achieve weight loss, and its neuropsychological effects in adolescents with obesity.

Status
Not yet recruiting
Phases
Unknown
Study type
Interventional
Source
EU CTR
Registry ID
EUCTR2009-016921-32-ES
Enrollment
Unknown
Registered
2009-11-18
Start date
Unknown
Completion date
Unknown
Last updated
2012-04-03

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

obesity MedDRA version: 14.1 Level: PT Classification code 10029883 Term: Obesity System Organ Class: 10027433 - Metabolism and nutrition disorders

Interventions

Product Code: TRIPTOFANO Pharmaceutical Form: Capsule INN or Proposed INN: TRIPTOFANO CAS Number: 73-22-3 Other descriptive name: TRYPTOPHAN Concentration unit: mg milligram(s) Concentration type: equ

Sponsors

Fundació Sant Joan de Déu
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Both male and female patients, attending the Pediatric Endocrinology Service on an out-patient basis. 2. Age from 12 to 17 years, inclusively. 3. Presence of a BMI > or = to 2SD and =65 years) no F.1.3.1 Number of subjects for this age range

Exclusion criteria

Exclusion criteria: 1. Obesity secondary to an endocrine disease (hypothyroidism, Cushing?s syndrome, polycystic ovary, hypothalamic syndromes, hypogonadism) or the use of medications such as cortisol. 2. Concomitant administration of other psychotrophic medication such as antidepressants or anxiolytics. 3. Patients included in the study must not be taking any vitamins or nutritional supplements or any anti-obesity preparations, including herbal remedies, pharmacy products or homeopathic products. 4. Patients with a known psychiatric disorder. 5. Patients treated with any kind of structured psychotherapy regime. 6. Patients with type 2 DM, arterial hypertension (blood pressure above the 95 percentile for gender and height) or steatotic liver (hypertransaminasemia with echographic image of fatty liver). 7. Patients with any severe food intolerance, or with a known allergy to any of the substances used in the study. 8. Patients in treatment with oral hypoglycemiants. 9. Pregnant or breast-feeding.

Design outcomes

Primary

MeasureTime frame
Main Objective: To assess the efficacy of a treatment of dietary supplementation with tryptophan to achieve weight loss, and the improvement of clinical parameters such as reduced body mass index and waist/hip ratio.;Secondary Objective: 1. To determine whether the administration of tryptophan as a dietary supplement helps to control intake, reducing the total number of calories consumed, and also the intake of carbohydrates throughout the day. 2. To assess the impact of tryptophan supplementation at reducing symptoms of anxiety, depression and other symptoms associated with eating disorders. 3. To determine tolerance of tryptophan as a dietary supplement in obese adolescents and its effects on plasma tryptophan levels, tryptophan/LNNAs ratio, and plasmatic serotonin.;Primary end point(s): The following clinical variables will be studied: weight, height, BMI, weight/height Z-scores, BMI Z-score, and height/blood pressure and waist/hip circumference Z-scores.;Timepoint(s) of evaluation of this end point: These parameters will be measured before starting the study and every month for the following six months.

Secondary

MeasureTime frame
Secondary end point(s): See protocol (variables associated with secondary objectives).;Timepoint(s) of evaluation of this end point: See protocol (variables associated with secondary objectives).

Countries

Spain

Contacts

Public ContactFundació Sant Joan de Déu

Fundació Sant Joan de Déu

rmorales@fjd.org+34936009751

Outcome results

None listed

Source: EU CTR (via WHO ICTRP) · Data processed: Feb 4, 2026