Extract of Fox′glove. Syn. Extractum Digitalis (Ph. E.), L. Prep. 1. (Ph. L. 1836.) From the leaves of Digitalis purpurea, as EXTRACT OF ACONITE—(Ph. L.)
2. (Ph. E.) From the filtered expressed juice, either evaporated in vacuo, with the aid of heat, or by exposure to a current of dry air.
3. (P. Cod.)—a. As EXTRACT OF BISTORT—P. Cod.
b. As EXTRACT OF BOX—P. Cod.
4. (Ph. Baden.) As ALCOHOLIC EXTRACT OF ACONITE—Ph. Bad.
Obs. The juice of foxglove is very readily injured by exposure to air and heat. The evaporation should therefore be conducted as rapidly as possible, but at a low temperature. It is narcotic, sedative, and is powerfully poisonous.—Dose, 1⁄2 gr., cautiously increased to 2 or 3 gr. It is principally given in fevers, dropsy, diseases of the heart, pulmonary consumption, epilepsy, scrofula, and asthma. This extract spoils by long keeping. The last two are stronger than the rest, and keep better. It is omitted in the present Ph. L.
Extract of Fu′mitory. Syn. Extractum Fumariæ, L. Prep. 1. From either the infusion or decoction of the dried leaves of common fumitory (Fumaria officinalis).
2. (B. Cod.) From the clarified juice of the fresh herb. Slightly aperient, diaphoretic, and alterative. It has been given in obstructions of the liver and cutaneous affections of the leprous kind.
Extract of Galls. Syn. Extractum gallæ, E. gallarum, L. Prep. 1. From the infusion by maceration or displacement with cold water.
2. From the hot infusion or decoction. The first is to be preferred. Astringent. Used chiefly in ointments and injections for piles, foul ulcers, &c., and, internally, in hæmorrhages, spitting of blood, &c.