Acidum Carbolicum therapeutic range of actions as per Boericke Materia Medica

It is used in old-schools practice as an escharotic (ending to produce an eschar; corrosive; caustic) for warts and warty tumors, for phagedenic ulcer (a cutaneous ulcer that rapidly spreads peripherally), chancres (a painless ulcer, particularly one that develops on the genitals), poisoned bites

The dilute acid is used internally in fevers to quench thirst, in bronchitis and phthisis to diminish the excessive secretions, in some cases of syphilis, in phosphaturia.

It has been injected into the bladder in a dilute form to dissolve calculi (Brunton).