(3) An authorized health care practitioner may prescribe and dispense an emergency opioid antagonist to a patient or caregiver for use in accordance with this section, and pharmacists may dispense an emergency opioid antagonist pursuant to such a prescription or pursuant to a non-patient-specific standing order for an autoinjection delivery system or intranasal application delivery system, which must be appropriately labeled with instructions for use. Such patient or caregiver is authorized to store and possess approved emergency opioid antagonists and, in an emergency situation when a physician is not immediately available, administer the emergency opioid antagonist to a person believed in good faith to be experiencing an opioid overdose, regardless of whether that person has a prescription for an emergency opioid antagonist. see full law