Requires county health departments to maintain reserve stock of opioid antidotes to dispense to certain entities on interim basis to ensure uninterrupted supply.

S 3128 requires New Jersey county health departments to maintain a reserve stock of opioid antidotes (like naloxone) to provide to specific entities - such as emergency medical services, substance abuse programs, and schools with approved policies - when their regular supply runs low. This directly affects county health departments, which must manage the reserve, and the designated entities that can receive the antidotes under the bill. The key mechanism creates a backup supply system to prevent interruptions in access to opioid antidotes during overdose emergencies. The bill aims to ensure continuous availability of these life-saving medications without expanding new access pathways.