Arnica

(ar' -nik-ah). A genus of composite-flowered plants. The name in medicine denotes the plant commonly known as " Leopard's bane," A. montana. Both flowers and roots are used in medicine. Its properties are probably due to an alkaloid, trimethyl am in, In small doses it is a cardiac stimulant; in larger doses a depre ant. In toxic doses it frequently causes death. It is a popular remedy, when locally applied, for sprains, bruises and surface wounds, and is valuable also in typhus and typhoid fevers as an antipyretic. A., Emplastrum, contains ext. of root 33, resin plaster 67 parts. A., Ext. Radicis. Dose gr. j-iij. A., Ext. Rad. Fid. Dose TT. A., Infusum, 20 parts flowers, 100 parts water. Superior to the tincture for local use. A., Tinct., 20 per cent. Dose A., Tinct. Rad., 10 per cent. Dose Trimethyl am in, (unof.). Dose gr. ij-iij in syrup. Arnicae flores, arnica flowers. Arnicae radix, the root of arnica.