Bismuth Subnitrate.
Calomel: in acute sthenic type.
Castor Oil: in small doses, with opium.
Cathartics: to cause local depletion.
Cold: Enemata of ice cold water to relieve pain and tenesmus.
Copaiba: in some cases.
Copper Arsenite.
Copper Sulphate.
Corrosive Sublimate: in small doses, when stools are slimy and bloody.
Creolin.