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RecruitingNCT06864520GABAPAUSEUpdated Mar 7, 2025

Evaluation of the Beneficial Effects of a Product Containing Γ-aminobutyric Acid (GABA) on Climacteric Syndrome Disorders

An interventional study of GAMMA-AMINOBUTYRIC ACID - GABA and Placebo in Climacteric Symptoms and Hot Flashes, sponsored by Ospedale Policlinico San Martino. Recruiting at 1 site in Italy. Open to female participants. Per ClinicalTrials.gov, last updated 2025-03-07.

Sponsored by Ospedale Policlinico San Martino · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Primary completion was expected by Nov 2025, 1 year ago, but the record still lists the study as recruiting.
  • Registered 1 year 3 months after the study started (first participant enrolled Oct 2023, registered Feb 2025).
  • Started Oct 2023; still recruiting 3 years later.
Phase
Not applicable
Study type
Interventional
Enrollment
112
Allocation
Randomized
Sex
Female
01

Study summary

The goal of this clinical trial is to learn if the food supplement based on GABA works to treat climateric symptoms. It will also learn about the safety of supplement based on GABA. The main question aims to answer:

  • Does food supplement based on GABA lower the climateric symptoms, such as hot flashes, sleep, disturbances, mood swings?
  • The supplement that will be administered is commonly available on the market and can be used without particular precautions. No important side effects are reported.

Researchers will compare supplement based on GABA to a placebo (a look-alike substance that contains no active ingredients) to see if supplement based on GABA works to treat climateric symptoms.

Participants will:

  • Take supplement based on GABA or a placebo every day for 3 months
  • Visit the clinic on day 7, 37 and 97 after enrolment for checkups and tests
  • Keep a diary of number and intensity of hot flashes
  • To fill scales evaluating sleep quality, anxiety, depression and quality of life
Read the detailed description

This study aims to evaluate the effectiveness of a commercial supplement to alleviate symptoms associated with menopause such as hot flashes, sleep disturbances, and mood swings.

Participants will be required to come to the clinic for a few visits:

  • First visit in which the nature of the study will be explained, the intensity of symptoms will be assessed (using the Greene questionnaire), and the inclusion and exclusion criteria for participation in the study will be assessed. If the participant is eligible for the study, they will be asked to fill out a diary for the next 7 days in which to indicate the daily number and intensity of hot flashes;
  • Second visit in which the hot flash diary will be collected and the following questionnaires will be submitted: Greene Scale to determine climacteric symptoms; STAI-Y1 to determine state anxiety (20 questions); SDS to determine the presence of depression (20 questions); PSQI to determine the quality of sleep (9 questions); MenQoL, Quality of life (29 questions). At this visit, a new diary will be provided, in which the number and intensity of hot flashes during the last 7 days before the next visit must be reported, and the product to be taken for the following month will be provided; neither the participant nor the investigator are aware of the product provided: study product or placebo;
  • Third visit, in which the hot flash diary and the product package delivered at the previous visit will be collected. The participant will have to fill in all the questionnaires completed at the previous visit and will also be asked about the degree of satisfaction with the first 30 days of treatment. At this visit, a new diary will be provided, in which the number and intensity of hot flashes during the last 7 days before the next visit must be reported, and the product to be taken for the following two months will be provided;
  • Fourth visit, in which the hot flash diary and the product package delivered at the previous visit will be collected. The participant will have to fill out all the questionnaires completed at the previous visit and will also be asked about the degree of satisfaction with the treatment.
02

Conditions studied

  • Climacteric Symptoms
  • Hot Flashes

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03

In context

Hot Flashes

339 studies on the registry are indexed under Hot Flashes; 56 are open to participants now.

This study's planned enrollment of 112 is above the median of 90 across 306 interventional studies indexed under Hot Flashes.

Browse Hot Flashes studies →

Lead sponsor

Ospedale Policlinico San Martino is the lead sponsor of 30 studies on the registry; 11 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
Child (0–17), Adult (18–64), Older adult (65+)
Sexes eligible
Female
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Physiological or iatrogenic menopause (amenorrhea for at least 12 months or for 6 months with FSH ≥40 IU/L)
  • Greene Index value ≥ 15

Exclusion criteria

Exclusion Criteria:

  • Patients who do not consent to the study
  • Patients who have used hormone replacement therapy in the last 3 months
  • Patients who have used phytotherapeutics in the last 3 months
  • Patients who have used acupuncture in the last 3 months
  • Uncompensated hyper or hypothyroidism
  • Acute phase of endocrine pathologies
  • Patients with major psychiatric disorders
  • Addiction to opioids or alcohol
  • Glaucoma
  • Active liver disease
  • Use of antidepressants, benzodiazepines or any neuroactive drug
  • Known allergy to the components of the treatment being studied
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
112 participants (estimated)

Study arms

  • Active comparator
    Group A1 with 3 capsules

    Tablets containing 250mg of γ-aminobutyric acid (GABA) and 50mg of Melissa extract, to be taken one at lunch and two before bedtime for 12 weeks

    Dietary Supplement: GAMMA-AMINOBUTYRIC ACID - GABA

  • Placebo comparator
    Group A2 with 3 capsules

    Tablets containing microcrystalline cellulose, rice bran, bitter cocoa powder, to be taken one at lunch and two before bedtime for 12 weeks

    Other: Placebo

  • Active comparator
    Group B1 with 2 capsules

    Tablets containing 250mg of γ-aminobutyric acid (GABA) and 50mg of Melissa extract, to be taken one at lunch and one before bedtime for 12 weeks

    Dietary Supplement: GAMMA-AMINOBUTYRIC ACID - GABA

  • Placebo comparator
    Group B2 with 2 capsules

    Tablets containing microcrystalline cellulose, rice bran, bitter cocoa powder, to be taken one at lunch and one before bedtime for 12 weeks

    Other: Placebo

Interventions

  • Food supplement based on GABA and Melissa extract

  • OtherPlacebo

    Placebo based on microcrystalline cellulose, rice bran, bitter cocoa powder

06

What researchers measure

Primary outcomes

  1. Change of the Greene Climacteric Scale Score

    The Greene Scale is a verified measurement tool which provides a brief measure of menopause symptoms. It is composed of 21 items evaluating the bother of climacteric symptoms with a score for each symptom from none (value of 0) to mild (value of 1) to moderate (value of 2) to intense (value of 3). The total score of the ranges from 0 to 63, higher values corresponding to more intense climacteric symptoms. A value equal or greater than 15 indicates the presence of climacteric symptoms

    Time frame: From enrollment to the end of treatment at 12 weeks

Secondary outcomes

  1. Assessment of anxiety with the State-Trait Anxiety Inventory-Y1 (STAI-Y1) questionnaire

    The State-Trait Anxiety Inventory (STAI) is a commonly used measure of state (Y1) of anxiety with 20 items. It can be used to diagnose anxiety and to distinguish it from depressive syndromes. All items are rated on a 4-point scale (with 1 = not at all and 4 = very much) and the total score is between 20 and 80 with a threshold value predictive of anxious symptoms set at 40. Higher scores are positively correlated with higher levels of anxiety

    Time frame: From enrollment to the end of treatment at 12 weeks

  2. Assessment of sleep quality with the Pittsburgh Sleep Quality Index (PSQI) questionnaire

    The Pittsburgh Sleep Quality Index assesses sleep quality and disturbances. The global score ranges between 0 and 21, where higher scores indicate worse sleep quality

    Time frame: From enrollment to the end of treatment at 12 weeks

  3. Reduction in the number and intensity of hot flashes, assessed with a daily diary 7 days before follow up

    Participants report in their daily diary the number and intensity of hot flashes, rating them on a 3-point scale (1 = mild, 2 = moderate, and 3 = severe).

    Time frame: From enrollment to the end of treatment at 12 weeks

  4. Assessment of quality of life with the Menopause-specific Quality of Life (MenQoL) questionnaire

    The MENQOL consists of a total of 29 items in a Likert-scale format. Each item assesses the impact of one of four domains of menopausal symptoms: vasomotor, psychosocial, physical, and sexual. Items pertaining to a specific symptom are rated as present or not present, and if present, how bothersome on a zero (not bothersome) to six (extremely bothersome) scale. The possible score on any item ranges from one to eight, where higher score indicates higher symptoms

    Time frame: From enrollment to the end of treatment at 12 weeks

  5. Comparison of the efficacy of two dosages

    Time frame: From enrollment to the end of treatment at 12 weeks

07

Study locations

1 of 1 sites recruiting
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 7, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT06864520
Lead sponsor
Ospedale Policlinico San Martino
Responsible party
Angelo Cagnacci (Full Professor Obstetric and Gynecology - Director Academic Unit of Obstetrics and Gynecology, Ospedale Policlinico San Martino) — Principal investigator
First posted
Mar 7, 2025
Start date
Oct 25, 2023
Primary completion
Nov 2025 (estimated)
Completion
Dec 2025 (estimated)
Last update
Mar 7, 2025

Study contacts

ANGELO CAGNACCI
Contact
angelo.cagnacci@unige.it
+39-010-3537728
Angelo Cagnacci, MD, PhD
principal investigator · Clinica Ostetrica e Ginecologica, IRCCS-Ospedale San Martino di Genova

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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