Conium: in scrofulous joints.

Counter-irritation.

Gaduol: as alterative and reconstitutive.

Glycerinophosphates.

Heat.

Ichthalbin: as tonic and alterative.

Ichthyol.

Iodine: injection in hydrarthrosis after tapping; or painted over.

Iodoform: solution in ether, 1 in 5, injected into tuberculous joints; also as a dressing after opening.

Iodoformogen.