Enema Asscetidae. Br.- Like the preceding, this enema is useful in flatulence and tympanites, and especially when occurring in hysterical females. To prepare it, a drachm of assafetida may be rubbed with half a pint of barley-water, flaxseed mucilage, or simply water. The British Pharmacopoeia directs six fluidrachms of tincture of assafetida and six fluidounces of mucilage of starch.