The bark of trees found in South America, somewhat similar to the Cinchona, having an aromatic resinous odor and pungent taste. It contains a bitter principle, cotoin, and has astringent action. It is irritant to the skin and mucous membranes.

Fluidextractum Coto. Fluidextract Of Coto Bark

Average dose,  viii.-0.5 mil.

Should be given in wine or other dilute alcohol, as it does not combine with water, but forms a precipitate.

Cotoin

Average dose, gr. i-0.06 Gm.

Paracotion, active principle of a similar bark, is given in larger dose.