Amneal Pharmaceuticals announces the availability of over-the-counter naloxone hydrochloride (naloxone HCI) nasal spray, USP, 4 mg, following Abbreviated New Drug Application approval from the US FDA. The spray is manufactured in the US and is a generic equivalent to over-the-counter NARCAN HCI nasal spray, a medication that is widely used to help treat drug overdose from opioids, including heroin, fentanyl, and prescription opioid medications.