Strychnine, 1 1/4 grains.

Elixir of pyrophosphate of iron with cinchonidine, 16 fluidounces.

Acetic acid, a sufficient quantity.

Powder the strychnine and gradually add acetic acid until it is dissolved, then mix with this solution the elixir of pyrophosphate of iron with cinchonidine. Each fluidrachm (teaspoonful) of the finished elixir contains one grain of pyrophosphate of iron, acetate of cinchonidine equivalent to one-half grain of cinchonidine, and one-hundredth of a grain of acetate of strychnine.

The National Formulary prepares this elixir with phosphate of iron, citrate of potassium, sulphate of cinchonidine, and sulphate of strychnine. The finished product resembles that of our formula, the amount of iron, however, being twice as great.