A sanitary outlet fitting with a liquid guide which opens into an outlet fitting, in the region of which an insertable cartridge is provided. The liquid guide is matched in at least the mouth region of the outlet fitting to the insertable cartridge. The insertable cartridge is held in the outlet fitting by a sleeve-shaped intermediate holder, which is held in the outlet fitting in a radially sealed manner. A peripheral edge region on the admission side of the insertable cartridge is held in an axially sealed manner in the outlet fitting. The insertable cartridge is inserted with the aid of the intermediate holder supporting it into the outlet fitting to a depth such that the insertable cartridge is held securely. Accordingly, the insertable cartridge is scaled axially in its peripheral region on the admission side. The intermediate holder can also be held in a radially sealed manner in the outlet fitting to prevent undesired creepage.