Narcan Nasal Spray contains naloxone hydrochloride. Naloxone blocks or reverses the effects of opioid medication, including extreme drowsiness, slowed breathing, or loss of consciousness. An opioid is sometimes called a narcotic.
Narcan Nasal Spray is used to treat an opioid overdose in an emergency situation. This medicine should not be used in place of emergency medical care for an overdose.
Narcan Nasal Spray is also used to help diagnose whether a person has used an overdose of an opioid.