Bromide of ammonium, 640 grains.

Simple elixir, 15 1/2 fluidounces.

Dissolve the bromide of ammonium in the simple elixir, and filter if necessary.

Each teaspoonful of the finished elixir contains five grains of bromide of ammonium.

The National Formulary directs the addition of thirty grains of citric acid to sixteen fluidounces of this elixir.