The root of Frasera carolinensis.—U. S.
Preparation.—Tincture of Frasera.
Dose.—Prom gtt. v. to 5ss.
Therapeutic Action.—American Columbo is tonic, laxative, antiseptic and febrifuge, when properly dried; emetic and cathartic, in its recent state. It is a mild, pure, simple bitter, and a very valuable tonic, and may be prescribed in all cases where a simple, pure tonic is indicated. Many think it fully equal to the imported columbo, as a tonic, and it is extensively used in the Western States as a substitute for that article; while others regard it as far inferior to it as a remedial agent in the various cases in which that is employed.