Scammony (3 gr.) triturated with milk (1 fl. oz.).

Scammoniae Resina, B.P. Resina Scammonii, U.S.P. Resin of Scammony.

Characters. - In brownish, translucent pieces; brittle; resinous in fracture; of a sweet fragrant odour if prepared from the root. It cannot form singly an emulsion with water. Ether dissolves it entirely.

Preparation. - Extracted from the root by percolating with alcohol.

Composition. - Principally jalapin soluble in ether, in this respect differing from the convolvulin of jalap. The resin also contains other substances the properties of which are imperfectly known. Contains no gum.

Impurity. - Guaiacum fraudulently added.

Test. - The tincture does not render the fresh cut surface of a potato blue.

Preparations.

B.P.

Dose.

Confectio Scammonii........................................................................

10-30 gr. or more.

Extractum Colocynthidis Compositum..............................................

5-15 gr.

Pilula Colocynthidis Composita (vide p. 522)...................................

5-10 gr.

,, ,, et Hyoscyami (vide p. 522)..............................

5-10 gr.

Pilula Scammonii Composita (vide p. 523).....................................

5 gr.

Pulvis Scammonii Compositus........................................................

10-20 gr.

U.S.P.

Extractum Colocynthidis Compositum..............................................

5-20 gr.