The green tea and its beneficial effect on the human body have been known for even 3000 years. The catechin is a type of tannin present in about 20% and which, when dissolved in water, contributes to the powerful content of the tea.
It has inhibitory effect on histamines (substances provoking allergic reactions) thus relieving other allergy symptoms.
Drinking green tea in Japan and China is the norm, while its beneficial effect has been proved with the fact that in regions like Japan, where this tea is consumed in abundance, the cases of malignant conditions are very rare.
Preparation: put one spoon of green tea in 250 ml hot water. Leave it for three minutes. Filter the tea out and drink it fresh.