Related entry: Spiritus.—Spirits
Essences are alcoholic solutions of volatile oils differing from the official class of preparations known as Spiritus or Spirits, in strength only. Essences, as a rule, are about three times stronger than the spirits. The British Pharmacopoeia recognizes two essences, Essence of anise and Essence of peppermint.
ESSENTIA ANISI, Essence of anise.—Mix 1 fluid ounce of oil of anise with 4 fluid ounces of rectified spirit. This is in accordance with the British Pharmacopoeia. Properties same as oil of anise, which see. Dose, from 10 to 20 drops.
ESSENTIA MENTHAE PIPERITAE, Essence of peppermint.—Mix 1 fluid ounce of oil of peppermint with 4 fluid ounces of rectified spirit. This accords with the formula of the British Pharmacopoeia. Properties those of oil of peppermint, which see. Dose, 10 to 20 drops.