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A Double-blind Randomized Placebo-controlled Clinical Study to Verify the Efficacy of TetraSOD® in the Improvement of Semen Quality in Patients With iIdiopathic Infertility

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What is being tested

Sham

+ Marine microalgae Tetraselmis chuii with high Superoxide Dismutase (SOD) activity

Dietary Supplement
Who is being recruted

Urogenital Diseases+3

+ Genital Diseases

+ Genital Diseases, Male

From 18 to 45 Years
See all eligibility criteria
How is the trial designed

Treatment Study

Interventional
Study Start: January 2024
See protocol details

Summary

Principal SponsorFitoplancton Marino, S.L.
Study ContactCarlos InfanteMore contacts
Last updated: January 28, 2026
Sourced from a government-validated database.Claim as a partner

Study start date: January 8, 2024

Actual date on which the first participant was enrolled.

This clinical trial focuses on exploring whether a dietary supplement called TetraSOD® can improve sperm quality in men with unexplained infertility. Infertility is a growing issue affecting many people worldwide, and male-related factors contribute to about half of these cases. Often, the cause of male infertility is unknown, but oxidative stress is believed to play a significant role. Oxidative stress can lead to damage in sperm DNA, which affects sperm quality. This study aims to determine if a lower dose of TetraSOD®, an antioxidant derived from marine microalgae, can enhance sperm quality by reducing oxidative stress and improving sperm DNA integrity. Participants in the study will take a daily dose of 125 mg of TetraSOD® for three months, which aligns with a full cycle of sperm production. Researchers will measure various semen parameters, such as sperm concentration, motility, and DNA fragmentation, to assess changes in sperm quality. The study will also evaluate the correlation between sperm DNA fragmentation and oxidative stress levels using a system called MiOXSYS. By comparing these results with those from a previous trial using a higher dose, the study aims to identify an effective dosage range for TetraSOD® as a treatment for male infertility. This research could offer new hope for improving fertility outcomes in men with idiopathic infertility.

Official TitleA Double-blind Randomized Placebo-controlled Clinical Study to Verify the Efficacy of TetraSOD® in the Improvement of Semen Quality in Patients With iIdiopathic Infertility
NCT06324071
Principal SponsorFitoplancton Marino, S.L.
Study ContactCarlos InfanteMore contacts
Last updated: January 28, 2026
Sourced from a government-validated database.Claim as a partner

Protocol

This section provides details of the study plan, including how the study is designed and what the study is measuring.
Design Details

50 patients to be enrolled

Total number of participants that the clinical trial aims to recruit.

Treatment Study

These studies test new ways to treat a disease, condition, or health issue. The goal is to see if a new drug, therapy, or approach works better or has fewer side effects than existing options.



Eligibility

Researchers look for people who fit a certain description, called eligibility criteria: person's general health condition or prior treatments.
Conditions
Criteria

Male

Biological sex of participants that are eligible to enroll.

From 18 to 45 Years

Range of ages for which participants are eligible to join.

Healthy volunteers not allowed

If individuals who are healthy and do not have the condition being studied can participate.

Conditions

Pathology

Urogenital DiseasesGenital DiseasesGenital Diseases, MaleInfertilityInfertility, MaleMale Urogenital Diseases

Criteria

Inclusion Criteria: * Age: 18 to 45 * Male patients with idiopathic infertility classified with asthenozoospermia, oligozoospermia or oligoasthenozoospermia after seminal assessment. * Not achieving pregnancy after at least one year of intercourse with the same partner without protective measures Exclusion Criteria: * Azoospermia (absence of spermatozoa) or severe oligozoospermia (\< 5 x 10\^6 spermatozoa/ml of ejaculate) * Testicular torsion or prostatitis * Urinary retention and infections * Drug consumption * Hormone treatments * Recent surgical interventions * Diabetes * Kidney or liver disease * Leukocytosis * Antioxidant supplement consumption in the last 3 months * BMI\>30 Kg/m2 * Endocrinopathies, hypo and hyperthyroidism * Chromosomal anomalies (XX, XYY, XXY) * Treatments with anticoagulants * Radiotherapy/Chemotherapy * Participation in another clinical study prior to inclusion in this study that could affect the objectives of the current study

Study Plan

Find out more about all the medication administered in this study, their detailed description and what they involve.
Treatment Groups
Study Objectives

2 intervention groups are designated in this study

This study does not include a placebo group 

Treatment Groups

Group I

Experimental
Group supplemented with a daily dose of placebo

Group II

Experimental
Group supplemented with 125 mg/day of TetraSOD®

Study Objectives

Primary Objectives

Secondary Objectives

Study Centers

These are the hospitals, clinics, or research facilities where the trial is being conducted. You can find the location closest to you and its status.

This study has 1 location

Recruiting

Hospital Clinic

Barcelona, SpainOpen Hospital Clinic in Google Maps
Recruiting
One Study Center