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;
Iodide of potassium, 256 grains.
Simple elixir, a sufficient quantity.
Dissolve the iodide of potassium in enough simple elixir to produce sixteen fluidounces, and filter if necessary.
Each fluidrachm (teaspoonful) of the finished elixir contains two grains of iodide of potassium.