The root of Atropa belladonna. Cylindrical pieces, entire or longitudinally split, 1/2 - 1 foot in length, 3/8 - 3/4 inch in diameter, externally longitudinally wrinkled, and greyish-brown in colour, internally whitish and starchy. Important active constituent, the alkaloid, atropine.

1Extractum Belladonnæ Liquidum. An alcoholic extract standardized to contain 0.75% of alkaloids. 3/4 gr. in 110 min.

1Extractum Belladonnae Alcoholicum. Dose, 1/4 - 1 gr.; 15 - 60 mgms.

The above evaporated and milk sugar added to form a slightly coherent powder. Standardized to contain 1% of alkaloids.

2Suppositoria Belladonnæ. 1/60 gr. of alkaloids in each. - 10; Oil of Theobroma to 100.

2Emplastrum Belladonnæ. Base, Resin Plaster. Contains 0.5% of alkaloids.

2Linimentum Belladonnæ - 50; Camphor, 5; Water, 10; Alcohol, to 100.

1Tinctura Belladonnæ. Dose, 5 - 15 min.; 0.5 - 1 c.c. - 6.26; Alcohol, to 100. Standardized to contain about 0.05% of alkaloids.