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Amino acid l-lysine tested for hormone effects in healthy volunteers

NCT ID NCT01220388

Knowledge-focused Sponsor: University Hospital, Rouen Source: ClinicalTrials.gov ↗

What the study statuses mean

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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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 L-lysine, a common amino acid, changes levels of aldosterone and cortisol—hormones that control salt balance and stress. Twenty healthy men took L-lysine or a placebo for 13 days, then switched. Researchers measured hormone responses to standing, a drug, and a low-salt diet. The goal was to understand basic hormone control, not to treat any disease.

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

20 people

The number who actually took part.

Start date

Oct 2010

Finished

Mar 2013

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 45 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 subjects; * Age ranging 18 - 45 years old; * Submitted to a social security regimen; * Agreeing to the study \& Informed consent form signed; * Body mass index (\[weight (kg)/height (m)\]²) \< 27; * No treatment received 6 weeks before inclusion; * No anomaly after: complete clinical examination, pulse measurement, ECG; * Blood pressure on AMBP : Mean systolic blood pressure \< 135 mmHg \& Mean diastolic blood pressure \< 85 mmHg * No biological abnormality after biological testing o No participation in a clinical trial 3 months before inclusion. Exclusion Criteria: * Subject not agreeing to the study or impossible to follow-up; * Known history of significant medical or surgical pathology, notably endocrine; * Renal or hepatic insufficiency; * Nephrotic syndrome; * Edematous syndrome; * Hypertension or postural hypotension; * Cardiac rhythm or conduction pathologies; * Cardiac insufficiency; * Epilepsy; * Significant psychiatric disorder; * Known history of severe allergy, hypersensitivity to metoclopramide; * Hereditary problems of fructose intolerance, glucose-galactose malabsorption or sucrase-isomaltase deficit; * Impaired lactose tolerance.

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As listed by the trial registrant

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

Healthy volunteers Male

Contacts and locations

Locations

  • Rouen Clinical research Centre (CIC 0204)

    Rouen, 76031, France

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