The leaves of Atropa Belladonna, U.S.P. The fresh leaves, with the branches to which they are attached, of the deadly nightshade, Atropa Belladonna; also the leaves separated from the branches and carefully dried; gathered from wild or cultivated British plants when the fruit has begun to form, B.P

Characters. - Leaves alternate, three to six inches long, ovate, acute, entire, smooth, the uppermost in pairs and unequal. The expressed juice, or an infusion, dropped into the eye, dilates the pupil.

Composition. - Less than one per cent. of atropine, and a small proportion of asparagin. More atropine is obtained from the leaves of mature plants than from those gathered before inflorescence.

Preparations.

B.P.

Dose.

Extractum Belladonnae (green)............................................................

1/4-1 gr.

Tinctura ,, (from dried leaves)........................................

5-30 min.

Succus ,, (from fresh leaves).........................................

5-15 min.

U.S.P.

Extractum Belladonnae Alcoholicum......................................................

1/4 gr.

Tinctura Belladonnae..............................................................................

8-30 min.

Unguentum ,, ..............................................................................