An intradermal injection assembly for injecting a medicament into skin could form an intradermal needle with an adapter, an intradermal syringe with an adapter or an adapter for a merger with a syringe with a cannula. The intradermal adapter in these devices has a body having a longitudinal axis, a central portion having a cannula channel and a distal protrusion extending generally parallel to the longitudinal axis. The distal protrusion of the adapter has a first skin contacting surface extending generally parallel to the longitudinal axis. At least a portion of the distal protrusion is generally transparent such that the portion of the cannula that extends distally relative to a demarcation plane can be viewed through the distal protrusion during insertion of the cannula into a patient's skin.
