Aconite liniment (linimentum aconiti), made from the root with spirit, and flavoured with camphor; officinal in the British Pharmacopœia. It may contain about 2·0 per cent. of aconitine.
Aconite tincture, officinal in all the pharmacopœias.
Aconite ointment, 8 grains of aconitine to the oz. (i.e., 1·66 per cent.); officinal in the British Pharmacopœia.
Aconite extract, the juice of the leaves evaporated; officinal in most of the pharmacopœias. The strength in alkaloid of the extract varies; in six samples examined by F. Casson, the least quantity was 0·16 per cent., the maximum 0·28 per cent.[466]
[466] Pharm. Journ., 1894, 901.
Fleming’s tincture of aconite is not officinal, but is sold largely in commerce. It is from three to four times stronger than the B.P. tincture.
§ 423. The Alkaloids of Aconite.—The researches of Dr. Alder Wright and Luff, and especially those of Professor Dunstan,[467] have established that in the root of the true aconite there exist four alkaloids, one only of which has been as yet crystallised.