Opioid Overdose Prevention Naloxone : Overdose deaths from opioids are a public health crisis in New York. These overdose deaths are preventable. Naloxone, an opioid antagonist, can safely reverse an opioid overdose. In New York State, it’s legal and safe for anyone to carry and use it. This brief 30 minute or less training will teach you how to recognize and reverse an opioid overdose. You will become a Certified Opioid Overdose Responder and receive an Overdose Rescue Kit with naloxone--a medication that reverses the effects of an opioid overdose and restores breathing.