NCT05690126

Brief Summary

This study aims to test whether a saffron extract represents a good candidate to improve emotional well-being in subjects with subclinical symptoms of depression, fatigue, stress or anxiety. Given that mild depression, both subclinical and chronic, was shown to predispose to major clinical depression, early initiation of neuroactive nutrient supplementation may be useful to prevent or counteract the onset of chronic depression. The main objective of this study is to evaluate the efficacy of nutritional supplementation with saffron extract during 6 weeks in alleviating emotional well-being alterations in healthy adults presenting subclinical symptoms of depressed mood, anxiety, fatigue and/or stress. The secondary objectives are to assess the impact of saffron extract supplementation on the mood and neurovegetative components of emotional well-being and quality of life, namely:

  • depressive and anxious symptoms;
  • neurovegetative symptoms (fatigue, sleep quality);
  • perceived stress and quality of life. The exploratory objectives correspond to the biological assays for the evaluation of
  • the stress response system (stress hormones);
  • the inflammatory status;
  • saffron metabolites;
  • metabolome.

Trial Health

43
At Risk

Trial Health Score

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

Trial has exceeded expected completion date
Enrollment
50

participants targeted

Target at P25-P50 for not_applicable

Timeline
Completed

Started Dec 2022

Geographic Reach
1 country

1 active site

Status
unknown

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

December 8, 2022

Completed
13 days until next milestone

First Submitted

Initial submission to the registry

December 21, 2022

Completed
29 days until next milestone

First Posted

Study publicly available on registry

January 19, 2023

Completed
11 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 1, 2023

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

December 1, 2023

Completed
Last Updated

February 3, 2023

Status Verified

January 1, 2023

Enrollment Period

12 months

First QC Date

December 21, 2022

Last Update Submit

February 1, 2023

Conditions

Keywords

Saffron extractDepressive SymptomsFatigueEmotional wellbeingSleep qualityAnxietyInflammation

Outcome Measures

Primary Outcomes (1)

  • Change in emotional well-being composite score

    The primary endpoint is the change from baseline (V1) to 6 weeks (V2) in the composite Z-score of emotional well-being combining three components: depression (BDI score), anxiety (STAI state score) and fatigue (MFI score).

    Baseline (V1) and 6 weeks (V2)

Secondary Outcomes (14)

  • Change in mood

    Baseline (V1) and 6 weeks (V2)

  • Change in anxiety

    Baseline (V1) and 6 weeks (V2)

  • Change in stress

    Baseline (V1) and 6 weeks (V2)

  • Change in fatigue

    Baseline (V1) and 6 weeks (V2)

  • Change in sleep quality

    Baseline (V1) and 6 weeks (V2)

  • +9 more secondary outcomes

Study Arms (2)

Saffron extract

ACTIVE COMPARATOR

Daily, two dietary supplements (Saffron extract) will be taken orally with water, the first one at breakfast and the second one at dinner. Dietary supplements in capsule form

Dietary Supplement: Saffron extract

Placebo

PLACEBO COMPARATOR

Daily, two dietary supplements (Maltodextrin) will be taken orally with water, the first one at breakfast and the second at dinner. Dietary supplements in capsule form

Dietary Supplement: Maltodextrin

Interventions

Saffron extractDIETARY_SUPPLEMENT

Food supplements are taken during 6 weeks by healthy volunteers

Saffron extract
MaltodextrinDIETARY_SUPPLEMENT

Food supplements are taken during 6 weeks by healthy volunteers

Placebo

Eligibility Criteria

Age18 Years - 50 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64)

You may qualify if:

  • Healthy volunteers (as determines by medical history and clinical examination);
  • Male or female between 18 and 50 years of age;
  • Body Mass Index (BMI) 18.5 ≤ BMI \< 30 kg/ m2;
  • Subject with subclinical symptoms of depressed mood, anxiety, fatigue and/or stress, as determined by the presence of at least 6 or more symptoms of moderate intensity among the 18 symptoms listed in the modified neurotoxicity scale (NRS).
  • Subject able and willing to participate to the study by complying with the protocol procedures as confirmed by his dated and signed informed consent form;
  • Person affiliated or benefiting from a social security scheme.

You may not qualify if:

  • Psychiatric comorbidity determined with the Diagnostic and Statistical Manual of Mental Disorders 5 (DSM5) or history of psychiatric illness;
  • Neurodegenerative pathology (Alzheimer's disease, Parkinson's disease, dementia);
  • Cardio-metabolic diseases (cardiovascular diseases, type 1 or 2 diabetes...);
  • Untreated or unstabilised hypertension;
  • Severe chronic diseases (cancer, severe chronic pain, HIV, hepatitis, kidney disease, autoimmune diseases, etc.);
  • Chronic inflammatory diseases (Crohn's disease, coeliac disease, rheumatoid arthritis, etc.);
  • Pathologies likely to act on the Hypothalamus-Pituitary-Adrenal (HPA) axis or the adrenal cortical metabolism (e.g.: Cushing syndrome);
  • Untreated and/or unstabilised thyroid diseases (hypo/hyperthyroidism, Graves' disease...);
  • Subjects treated during the previous 6 months or being currently treated with psychotropic drugs prescribed and/or recommended for anxiety, depression, sleep disorders and generally for any neurological or psychological type of manifestation.
  • The same applies to:
  • Drugs likely to have direct or indirect effects on psychiatric symptoms, notably regular use of corticoids or steroidal anti-inflammatories (e.g. Betamethasone, Cortivazol, Dexamethasone, Methylprednisolone, Prednisolone, Prednisone, Tetracosactide, Triamcinolone, etc.);
  • Any drug treatment aimed at improving or maintaining cognitive functions (e.g. Aricept, Exelon, Reminyl, Ebixa etc.);
  • Food supplements during the last 3 months prior to participation in this study.
  • Personal or professional event with potential severe impact on the subject's emotional and/or psychological state within the last 8 weeks (e.g. but not limited to: change of job function/position, death of a family member, divorce, surgery, accident, etc.);
  • Use of antibiotic treatment (\<2 months);
  • +18 more criteria

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

CEN Experimental

Dijon, 21000, France

RECRUITING

Related Publications (1)

  • Amadieu C, Leyrolle Q, Farneti M, Anesi A, Bruchet E, Montet J, Dexpert S, Gaudout D, Mattivi F, Pourtau L, Castanon N, Capuron L. Effect of saffron extract supplementation on mood in healthy adults with subclinical symptoms of depression: a randomized, double-blind placebo-controlled study. Am J Clin Nutr. 2025 Dec;122(6):1625-1635. doi: 10.1016/j.ajcnut.2025.09.050. Epub 2025 Oct 3.

MeSH Terms

Conditions

DepressionFatigueSleep Initiation and Maintenance DisordersAnxiety DisordersInflammation

Interventions

maltodextrin

Condition Hierarchy (Ancestors)

Behavioral SymptomsBehaviorSigns and SymptomsPathological Conditions, Signs and SymptomsSleep Disorders, IntrinsicDyssomniasSleep Wake DisordersNervous System DiseasesMental DisordersPathologic Processes

Study Officials

  • Lucile Capuron, PhD

    INRAE-Laboratory of Nutrition And Integrative Neurobiology (NutriNeuro Lab)

    STUDY DIRECTOR

Central Study Contacts

Lucile Capuron, PhD

CONTACT

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
QUADRUPLE
Who Masked
PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
Purpose
PREVENTION
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

December 21, 2022

First Posted

January 19, 2023

Study Start

December 8, 2022

Primary Completion

December 1, 2023

Study Completion

December 1, 2023

Last Updated

February 3, 2023

Record last verified: 2023-01

Data Sharing

IPD Sharing
Will not share

Locations