Evidence supporting the use of: Tea Tree
For the body system: Sinuses

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Table of Contents

Synopsis

Source of validity: Scientific
Rating (out of 5): 2

Tea Tree (Melaleuca alternifolia) has been traditionally used by indigenous Australians for its medicinal properties, particularly for respiratory ailments. Modern scientific research provides some support for its use in supporting the sinuses, though evidence remains limited and preliminary. Tea tree oil contains terpinen-4-ol, an active compound with demonstrated antimicrobial, antiviral, and anti-inflammatory properties in vitro. Laboratory studies have shown that tea tree oil can inhibit the growth of certain bacteria and fungi often implicated in sinus infections, such as Staphylococcus aureus and Aspergillus species. Some small clinical trials and case reports suggest that inhalation or topical application (never ingestion) of diluted tea tree oil may help reduce symptoms of sinus congestion or bacterial sinusitis, likely due to its antimicrobial action and potential to decrease inflammation in mucosal tissues. However, robust clinical trials in humans are lacking, and much of the evidence is extrapolated from laboratory studies or anecdotal reports. Tea tree oil should always be used with caution, as it can be irritating or toxic if misused. In summary, while there is a scientific rationale for using tea tree oil to support sinus health, the current level of evidence is low and further well-designed human studies are needed.

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