The dried root of Anacyclus Pyrethrum. The Levant.

Characters. - In pieces about the length and thickness of the little finger, covered with a thick brown bark studded with black shining points. It breaks with a resinous fracture, and presents internally a radiated structure. When chewed it excites a prickling sensation in the lips and tongue, and a glowing heat.

Composition. - A resin, the properties of which are not yet fully known; also a volatile oil and sugar.

Preparation.

B.P. and U.S.P.

Dose.

Tinctura Pyrethri..........................................................................

10-20 m.

Action and Uses. - Pellitory is a local irritant, increasing the flow of saliva when taken into the mouth. It is used as a masticatory in dryness of the mouth, relaxed conditions of the throat, aphonia, and paralysis of the tongue or throat. It is also employed as a masticatory in headache and neuralgia of the head or face. The tincture diluted with water may be used as a gargle in similar conditions. The tincture may be applied on cotton wool to carious teeth to lessen the pain, but that of the pharmacopoeia is hardly strong enough. It has been given internally with success in globus hystericus in doses of 10 to 20 drops four times a day.