Elixir of pyrophosphate of iron,. 8 fluidounces.

Elixir of citrate of ammonium and bismuth with pepsin, 8 fluidounces.

Mix them together.

Each fluidrachm (teaspoonful) of the finished elixir contains one grain of pyrophosphate of iron and only one half grain each of pepsin and of ammonio-citrate of bismuth. The solution has an alkaline reaction, and the pepsin, under these conditions, is of uncertain quality.