MANKATO, Minn. – Three teenagers who overdosed on poisoned pills were found in time and rushed to a hospital. Police injected the overdose antidote Narcon on the scene.  Hours later, one remained in critical condition. The others revived sufficiently to go home. Police blamed fake oxycodone M30 pills that contained fentanyl. The laved drugs can slow heartbeats and respiration to life-threatening rates.