This section is from the "Elixirs And Flavoring Extracts. Their History, Formulae, & Methods of Preparation" book, by John Uri Lloyd. Also available from Amazon: Elixirs and flavoring extracts,: Their history, formulae, and methods of preparation;
Elixir of phosphate of quinine, 8 fluidounces.
Elixir of pepsin and ammonio-citrate of bismuth, 8 fluidounces.
Strychnine, 1 1/4 grains.
Acetic acid, a sufficient quantity.
Triturate the strychnine in a mortar with acetic acid in amount sufficient to effect its solution, and then add the elixirs, having previously mixed them together. If the elixir has an acid or an alkaline reaction, cautiously add enough ammonia water or acetic acid, as the case may demand, to render it neutral.
Each fluidrachm (teaspoonful) of the finished elixir contains one-half grain each of saccharated pepsin, quinine, and ammonio-citrate of bismuth, and about one-hundredth of a grain of strychnine. This is an association of incongruities and should be discarded.