Acid, Carbolic: one drop of 95 per cent. applied to fissure.
Belladonna: locally; relieves spasms.
Bismuth: with glycerin, as a local application.
Calomel: as ointment.
Carron Oil: as a dressing.
Castor Oil: to keep motions soft.
Chloral Hydrate: in dilute solution (2 per cent.) as a dressing.
Chloroform: diluted with half its bulk of alcohol, will aid healing.
Cocaine: in ointment.
Collodion: locally, to protect.