Can a simple seawater spray beat a stuffy nose?

NCT ID NCT06580210

Symptom relief Sponsor: Laboratoires Gilbert Source: ClinicalTrials.gov ↗

First seen Jun 27, 2026 · Last updated Aug 26, 2026 · Updated 2 times

Summary

This study is testing a seawater spray mixed with essential oils to see how well it relieves nasal congestion from colds, sinus infections, or allergies. About 114 people aged 12 and older will use the spray for 7 days. The main goal is to see if nasal blockage improves after 3 days of use.

What this could mean

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

Active substance: seawater spray with essential oils
What this could lead to: If it works, this could offer a simple, drug-free option for quickly easing stuffy noses during colds or allergies.
What could go wrong: This is a small, short-term study (7 days) with no comparison group, so results may not be conclusive. The spray is already on the market, so major safety issues are unlikely but possible.

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.

Participants

About 114 people

The number the study aims to enrol. It can still change while the study runs.

Started

Oct 2024

Expected to finish

Dec 2026

An estimate. End dates often move.

Lead sponsor

A company

The lead sponsor is a pharmaceutical, biotech, or medical-device company.

Who can take part

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

Who is studied

Participation in the study is open to patients who buy the mechanical decongestant seawater spray on request or on the advice of their pharmacist. Patients are offered the opportunity to take part in the clinical investigation at the time of payment and after the eligibility critera have been checked by the pharmacist.

Ages

12 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

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: * 1\. Patient ≥ 12 years, * 2\. Patient with acute rhinitis associated with nasal obstruction during infectious episodes such as rhynopharyngitis (cold), rhinosinusitis, or during non-infectious episodes as allergic rhinitis, * 3\. a. Informed adult patient who has given written consent prior to any study specific procedure, * b. Informed minor patients who has given assent and whose legal guardians have given written consent prior to any study specific procedure, * 4\. Patient able to meet the study requirements (questionnaire completion), * 5\. Patient affiliated to a social security scheme. Exclusion Criteria: * 1\. Patient who does not want to participate to the clinical investigation, * 2\. Hypersensitivity to seawater and/or known allergies to any of the ingredients of the spray, * 3\. A child with a history of febrile convulsions, * 4\. Diseases leading to respiratory insufficiency, * 5\. Patient suffering from nasal deformity or nasal polyps leading to chronic nasal obstruction, * 6\. Patient on local ans systemic vasoconstrictors, local and systemic corticosteroids and antihistamines, non-steroidal anti-inflammatory (NSAIDs), antibiotics and local antiseptics, * 7\. Concomitant use of other nasal sprays, essential oils for local nasal use and nsal cream or gel, * 8\. Patient under guardianship, curatorship of safeguard of justice.

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Conditions

The condition(s) this trial relates to.

allergic rhinitis common cold Nasal Obstruction nasopharyngitis Rhinitis, Allergic Rhinosinusitis sinusitis

As listed by the trial registrant

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

Acute rhinitis Allergic rhinitis Nasal obstruction Rhinopharyngitis Rhinosinusitis

How to take part

Only the study team decides who joins. These are the ways to reach them.

The places running it

3 sites. The list below names each one and where it is.
The official record

ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

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A doctor treating you

A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Can a simple seawater spray beat a stuffy nose?

What the study statuses mean