This dataset contains summary information on overdose responses and naloxone administrations by Pennsylvania criminal justice agencies and some third-party (i.e. EMS, Fire, Medical Staff, etc) first responders voluntarily entering incident data. Due to the voluntary nature of the application, the ODIN information provided may not represent the totality of all overdose and/or naloxone administration incidents involving criminal justice agencies occurring within the Commonwealth. Although this dataset does include some third-party administrations of naloxone, it should not be used to measure overdose response and naloxone administration incidents among all first responders.