Ammonio-citrate of bismuth, 128 grains.

Distilled water, 2 fluidounces.

Elixir of calisaya bark with iron, a sufficient quantity.

Dissolve the ammonio-citrate of bismuth in the distilled water, cautiously adding ammonia water if necessary; then add elixir of calisaya bark with iron, sufficient to make sixteen fluidounces. Should a precipitate follow, the addition of either ammonia water or acetic acid, as the case may demand, to render the liquid neutral, will redissolve it.

Each fluidrachm (teaspoonful) of the finished elixir contains one grain of ammonio-citrate of bismuth, about two grains of pyrophosphate of iron, and represents nearly four grains of officinal calisaya bark.