A method and system of delivering a first medicament to a first injection depth and a second medicament to a second injection depth using a single dispense interface. An example medicated module is attachable to a drug delivery device, where the drug delivery device includes a drug reservoir holding a first medicament. The medicated module includes a needle cannula having a sidewall, at least one micro-hole in the sidewall of the needle cannula, and a flexible membrane sealably fixed to an inner surface of the needle cannula. The flexible membrane holds a second medicament between the flexible membrane and a portion of the sidewall having the at least one micro-hole. The first and second medicaments can be delivered to two, axially separate injection depths.