Hydrastis

(hi-dras' -tis). Golden seal. The roots of H. can a dens is, with properties due to several alkaloids, the principal being hydras tin, q. v. It is a simple, bitter tonic, with antiperiodic properties, and arrests the movements of white blood-corpuscles. It is useful in catarrh of the stomach and urinary organs, and as a lotion in gonorrhea and gleet. Dose of the fld. ext.,; of the tinct. H., Ext., Liquid. (B. P.) Dose H., Glyceritum, hydrastis 10, glycerin and water, q. s. H., Tinct., 20 per cent, strength. Dose n. Unof.