Evidence supporting the use of: Green tea
For the health condition: Conjunctivitis

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Synopsis

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

Green tea (Camellia sinensis) has a long history of traditional use in East Asian medicine for various eye conditions, including conjunctivitis (commonly known as “pink eye”). This use is primarily rooted in folk remedies, where cooled green tea bags or infusions are applied topically to the eyes to soothe irritation and reduce redness. The basis for this practice lies in green tea’s natural content of polyphenols, particularly catechins, which have demonstrated antimicrobial and anti-inflammatory properties in laboratory settings.

However, while there is some in vitro evidence that green tea polyphenols can inhibit certain bacteria and viruses—some of which can cause conjunctivitis—there is a lack of robust clinical trials directly evaluating green tea’s efficacy in treating conjunctivitis in humans. Most modern scientific literature only alludes to its potential, and reputable medical sources do not currently endorse green tea as a primary or adjunct treatment for conjunctivitis.

In summary, green tea’s use for conjunctivitis is mainly supported by tradition rather than strong scientific validation. The evidence rating is moderate (2/5) because, although some laboratory studies are promising, clinical evidence in humans is lacking, and the practice remains largely anecdotal. Individuals should consult healthcare professionals before using green tea or any home remedy for eye infections, as improper treatment can lead to complications.

More about green tea
More about Conjunctivitis

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Alzheimer's Disease
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Concentration (poor)
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Conjunctivitis
Constipation (adults)
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