Tincture of nux vomica, 256 minims.

Simple elixir, 14 fluidounces.

Alcohol, 1/2 fluidounce.

Acetic acid, 60 minims.

Powdered wood charcoal, a sufficient quantity.

Triturate the tincture of nux vomica in a capacious mortar with powdered wood charcoal in amount sufficient to form a pasty mixture, then gradually add the simple elixirwhich has previously been mixed with the acetic acidstirring well, and filter. Lastly, mix the filtrate with the alcohol.

Each fluidrachm of the finished elixir represents two minims of tincture of nux vomica.

The foregoing is a modification of a formula suggested by Mr. E. J. Davidson in the American Journal of Pharmacy, 1878. We use acetic acid to hold the alkaloids in solution should the charcoal be alkaline, and use charcoal since the menstruum is incompatible with both magnesium carbonate and magnesium phosphate.