The ripe seed of the bitter almond tree, Prunus Amygdalus (Amygdalus communis), var. amara. Mogadore.

Characters. - Resembles the sweet almond in appearance, but is rather broader and shorter; has a bitter taste, and when rubbed with a little water, emits the odour of hydrocyanic acid.

Composition. - Bitter almonds contain all the constituents of sweet almonds, the fixed oil, however, being in less proportion, and in addition a glucoside amygdalin upon which emulsin (either of sweet or bitter almonds) acts as a ferment producing hydrocyanic acid and volatile oil of bitter almonds, thus :-

Preparations.

B.P.

Dose.

Oleum Amygdalae............................

1 fl. dr.-1/2 fl. oz.

U.S.P.

Syrupus Amygdalae....................

2 fl. dr.-2 fl. oz. (7 60 c.c.)