Oak bark

 Oak Bark

Oak Bark is an astringent and tonic.

It is used externally  in the form of decoction, to restrain bleeding from lacerated surfaces. As a local astringent, it is used in the form of decoction, as a gargle in sore throat and relaxed uvula.

It is used internally  in the same diseases as catechu, and when combined with aromatics and bitters, in intermittent fevers.

Dose  of the powder , from fifteen to thirty grains; of the decoction , from two to eight drachms.