On December 22, 2021, Teva Pharmaceuticals announced that it had launched its first generic version of Narcan (naloxone hydrochloride nasal spray) in the United States.

What is naloxone hydrochloride nasal spray?
Naloxone hydrochloride nasal spray is a prescription drug used to treat opioid emergencies such as opioid overdose or possible overdose, signs of respiratory problems, severe drowsiness, or inability to respond.
Naloxone hydrochloride nasal spray should be administered immediately. The drug should not be used as a substitute for emergency medical care. Even when a patient wakes up, immediately after giving the first dose of naloxone hydrochloride nasal spray, they need to seek urgent medical help.
Naloxone hydrochloride nasal spray is safe and effective in children with known or suspected opioid overdose.
What should we know about naloxone hydrochloride nasal spray?
Naloxone hydrochloride nasal spray is used to temporarily reverse the effects of opioids. The drug in naloxone hydrochloride nasal spray has no effect on people who are not taking opioids. In the event of an opioid emergency, be sure to carry naloxone hydrochloride nasal spray with you.