This section is from the book "Botanic Drugs Their Materia Medica, Pharmacology and Therapeutics", by Thomas S. Blair. Also available from Amazon: Botanic Drugs, Their Materia Medica, Pharmacology and Therapeutics.
Cloves, Eugenia aromatica. Official. Dose: 1 to 5 grains. Oil of Cloves is markedly carminative and is of great value for its anesthetic and caustic effect on exposed nerves in carious teeth. Eugenol, an hy-droxylated terpene, is the active agent.