Anhidrotic.—A medicine that diminishes the secretion of perspiration as Belladonna, etc.
Anodyne.—A medicine that lessens sensibility to pain, by diminishing the excitability of nerve centers, as Cannabis Indica, Chloral Hydrate, etc.
Anodynes Local.—Are drugs that diminish pain by acting locally on sensory nerves, and are applied in the form of a liniment over painful swellings, as Belladonna, Aconite, Opium, hot and cold packs, etc.
Antacid.—A medicine that counteracts or neutralizes acidity of the stomach or intestines as liquor Potassium, Sodium Carbonate and Bicarbonate, etc.
Antagonistic.—A medicine which counteracts the action of another medicine in the system, as would Potassium Bromide and Nux Vomica or Strychnine.
Anthelmintic.—A medicine efficiently destroying or expelling worms or preventing their development, as Santonin, Arecae Nut, etc.
Antidote.—A substance preventing or counteracting the action of a poison. Antidotes are distinguished as: chemical, those that change the chemical nature of the poison; mechanical, those that prevent absorption of poison; physiologic, those that counteract the effects of poison by producing other effects.
Antiemetic.—A medicine which prevents or arrests vomiting, as Bismuth Subnitrate.
Antifebrile.—A medicine that reduces temperature, as Acetanilid, etc.
Antiferment.—A medicine which prevents the formation of gases, as Sodium Bicarbonate, Turpentine, etc.