Elixir Cocæ.—1 in 6 of Simple Elixir.
Dose.—1 to 4 drachms in water is a palatable preparation.
Extractum Cocæ Liquidum (Off.).
Syn.—Extractum Erythroxyli Fluidum, U.S.
Dose.—½ to 2 drachms.
Coca leaves are exhausted by percolation with proof spirit, the second part of percolate concentrated and dissolved in the first portion, and the strength adjusted so that 1 ounce=1 of leaves; this preparation contains all the properties of the leaf. If freed from the coca wax it is miscible with water and more palatable, and, so purified, if added to port, sherry, or burgundy, in the proportion of half a teaspoonful to a wineglassful (about an ounce to a bottle), it forms an exhilarating mental stimulant.
By distilling off the spirit and concentrating by evaporation, a solid semi-alcoholic preparation is obtained about four times the strength of the above, known as:—
Extractum Cocæ.
Dose.—2 to 15 grains or more, in pills or pastils.
Infusum Cocæ.—1 in 50 of boiling water.