The dried tubercles of Ipomoea Purga (Exogoniun Purga), B.P. The tuberous root of Exogonium Purga, U.S.P. Mexico.

Fig. 210. Jalap, reduced to 1/3 in size.

Fig. 210. - Jalap, reduced to 1/3 in size.

Characters. - Varying from the size of a nut to that of an orange, ovoid, the larger tubercles frequently incised, covered with a thin, brown, wrinkled cuticle; presenting, when cut, a yellowish-grey colour, with dark brown concentric circles.

Preparations.

B.P.

Dose.

Extractum Jalapae.................................................................................

5-15 gr.

Pulvis Jalapae Compositus....................................................................

20-60 gr.

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

10-20 gr.

Resina Jalapae..............................................................................................................................................

2-5 gr.

Tinctura Jalapae....................................................................................

1/2-2 fl. dr.

U.S.P.

Abstractum Jalapae...............................................................................

7-10 gr.

Pulvis Jalapae Compositus....................................................................

30-60 gr.

Resina Jalapae.......................................................................................

2-5 gr.

Pilulae Catharticae Compositae (vide p. 523).............................................................

1-3 pills.

Pulvis Jalapae Compositus. Compound Jalap Powder. - B.P. Jalap, 5; acid tartrate of potassium, 9; ginger, 1 part. U.S.P. Jalap, 35; acid tartrate of potassium, 65.