Purgatives. - Drugs which increase the secretion of the intestines and the action of their vessels. Examples: Castor oil, rhubarb, Epsom salts, cascara.
Alteratives. - Drugs which benefit the nutrition of the body. Examples: Cod-liver oil, arsenic, and various preparations of iron, which are also blood tonics.
Aromatics. - Drugs which relieve pain in the digestive tract and stimulate the digestive juices. Examples: Peppermint and cinnamon.
Anodynes. - Drugs which relieve pain, as phenacetin and antipyrin.
Sedatives. - Drugs which depress the vitality and action of the heart or nervous system, such as opium and the bromides.
Expectorants. - Drugs which help the discharge of secretion from the respiratory passages, such as syrup of squills and ipecacuanha wine.
Astringents. - Drugs which lessen secretion, such as alum and chalk.
Hesmostatics. - Drugs which arrest internal haemorrhage, such as morphia.
Diaphoretics. - Drugs which induce sweating, such as opium and ipecacuanha.