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L-Carnitine: a natural boost for Post-Workout recovery?

NCT ID NCT07492446

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study looked at whether taking L-carnitine supplements for 21 days can reduce muscle damage and soreness after high-intensity interval training in young male athletes. Thirty healthy athletes took either L-carnitine or a placebo, and researchers measured blood markers of muscle damage and self-reported pain. The goal is to see if this common supplement can speed up recovery and improve performance.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
L-carnitine (dietary supplement)
What this could lead to
If it works, this could point toward a simple supplement to help athletes recover faster from intense workouts.
What could go wrong
This is a small, completed study with only 30 participants, so results may not apply to everyone. The supplement may have little effect due to low absorption.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

30 people

The number who actually took part.

Started

May 2025

Finished

Jun 2025

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 to 25 years

Sex

Male participants only

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Male athletes aged 18-25 years * Regularly participating in organized sports training for at least 3 days per week * Healthy individuals with no diagnosed cardiovascular, metabolic, or musculoskeletal disorders * Willingness to comply with the supplementation protocol for 21 days * Agreement to refrain from consuming foods rich in carnitine (e.g., meat and dairy products) during the supplementation period * Agreement to avoid unfamiliar or strenuous exercise, particularly resistance exercise involving eccentric contractions, for one week prior to the experimental protocol * Provision of written informed consent to participate in the study Exclusion Criteria: * Use of dietary supplements (including L-carnitine) within the last 3 weeks * Presence of musculoskeletal injury or chronic disease that may affect exercise performance * Use of medications that may influence muscle metabolism or recovery * Known allergy or intolerance to the supplement components * Failure to comply with the dietary or supplementation protocol * Participation in another clinical or exercise intervention study during the study period * Any condition deemed unsuitable for participation by the research team

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Conditions

The condition(s) this trial relates to.

Motor Activity

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Contacts and locations

Locations

  • Istanbul Sabahattin Zaim University, Faculty of Sports Sciences

    Istanbul, Küçükçekmece, 34303, Turkey (Türkiye)

More trials for these conditions

Other studies related to the condition(s) this trial covers.