Works as a deodorizer and excitant when applied locally for foul-smelling mucous discharges, e.

In 1906, Moore, Edie and Abram (2) at the Royal Infirmary in Liverpool, England, proposed that the "duodenum supplies a chemical excitant for the internal secretion of the pancreas and that in certain cases of diabetes, the appearance of sugar in the urine might be due to functional disturbance occasioned by the absence of such an intestinal excitant.

In the traditional medicine of the Asia-Pacific area, green tea is recognised as a mild excitant, central nervous stimulant, diuretic, carditonic and astringent.