Practically the same as diacetylmorphine. It is a subtle and dangerous drug of habit-forming qualities, and is employed in many trade or commercial preparations. It has been much used as a sedative, and when new was considered comparatively harmless and useful.

The addiction of young delinquents to it has brought it into notoriety, and parents should be warned against cough syrups which may possibly contain it. Dose, gr. 1/20-1/10 (0.003-0.006 Gm.) in pill or powder, or in aqueous solution with a few drops of dilute acetic acid.