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Green Tea Contributions by ColleenO

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Green tea is a popular and potentially medicinal beverage. Extracts are made to concentrate the active properties of green tea. A gargle made from green tea extract has shown promise for preventing the flu, and the oral consumption of a green tea extract might help prevent both colds and flus.

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  1. Snow JM. Camellia sinensi (L.) Kuntze (Theaceae). J Botanical Medicine. 1995;Autumn:28-32.
  2. Yamada H, Takuma N, Daimon T, et al. Gargling with tea catechin extracts for the prevention of influenza infection in elderly nursing home residents: a prospective clinical study. J Altern Complement Med. 2006;12:669-672.
  3. Rowe CA, Nantz MP, Bukowski JF, et al. Specific formulation of Camellia sinensis prevents cold and flu symptoms and enhances T cell function: a randomized, double-blind, placebo-controlled study. J Am Coll Nutr. 2007;26:445-452.
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Green tea contains high levels of substances called catechin polyphenols, known to possess strong antioxidant, anticarcinogenic, antitumorigenic, and even antibiotic properties.1

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A typical dosage is 100 mg to 150 mg three times daily of a green tea extract standardized to contain 80% total polyphenols and 50% epigallocatechin gallate.

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  1. Snow JM. Camellia sinensi (L.) Kuntze (Theaceae). J Botanical Medicine. 1995;Autumn:28-32.
  2. Yamada H, Takuma N, Daimon T, et al. Gargling with tea catechin extracts for the prevention of influenza infection in elderly nursing home residents: a prospective clinical study. J Altern Complement Med. 2006;12:669-672.
  3. Rowe CA, Nantz MP, Bukowski JF, et al. Specific formulation of Camellia sinensis prevents cold and flu symptoms and enhances T cell function: a randomized, double-blind, placebo-controlled study. J Am Coll Nutr. 2007;26:445-452.
... (more)

[Green tea][2] is a popular and potentially medicinal beverage. Extracts are made to concentrate the active properties of green tea. A gargle made from green tea extract has shown promise for preventing the flu.156 , and the oral consumption of a green tea extract might help prevent both colds and flus.

... (more)

In a double-blind, placebo-controlled study,156 124 residents of a Japanese nursing home gargled with green tea catechins or placebo for three months. All participants received standard influenza vaccine. The results showed that residents who gargled with the tea extract were less likely to develop influenza than those using the placebo. In addition, another double-blind study found preliminary evidence that oral consumption of a green tea extract might help prevent both colds and flus.163

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Green tea is a popular and potentially medicinal beverage. Extracts are made to concentrate the active properties of green tea. A gargle made from green tea extract has shown promise for preventing the flu, and the oral consumption of a green tea extract might help prevent both colds and flus.

... (more)

Green tea contains high levels of substances called catechin polyphenols, known to possess strong antioxidant, anticarcinogenic, antitumorigenic, and even antibiotic properties.1

... (more)