The juice obtained from incisions made in the trunk of Pterocarpus marsupium inspissated without artificial heat. Malabar.

Characters. - Small angular, brittle, glistening, reddish-black fragments, translucent and ruby-red on the edges, inodorous, very astringent. When chewed it tinges the saliva blood-red.

Composition. - Kino-tannic acid and pyrocatechin, which differs very slightly from catechin, obtained from catechu-Through the action of kino-tannic acid, kino strikes a violet colour with ferrous salts, turning to green by exposure.

Dose. - Of powdered kino, 10-30 gr.

Preparations

B.P.

Dose.

Pulvis Catechu Compositus............. (p.951)..........................

20 40 gr.

,, Kino ,, (p.845)...........................

5 20 gr.

Tinctura Kino................................................

1/2-2 fl. dr.

U.S.P.

Tinctura Kino................................................

1/2 2 fl. dr. (2 8 c.c)

Action and Uses. - Kino has an astringent action both externally and internally. It is useful in relaxed sore-throat as a gargle. It is given internally in diarrhoea and in pyrosis. From its insolubility it is most useful when we desire an astringent action on the lower part of the intestinal canal, but when the astringency is required in the upper part it is not so useful as the more soluble astringents.