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;
The National Formulary prepares this elixir by adding five hundred and twelve minims of citro-chloride of iron to enough elixir of pepsin to make sixteen fluidounces. Each fluidrachm represents about one-half grain of chloride of iron and one grain of pepsin.