1. a. Notwithstanding any other provision of law to the contrary, a licensed health care professional may prescribe an opioid antagonist in the name of a service program, law enforcement agency, or fire department to be maintained for use as provided in this section.

 b. (1) Notwithstanding any other provision of law to the contrary, a pharmacist licensed under chapter 155A may, by standing order or through collaborative agreement, dispense, furnish, or otherwise provide an opioid antagonist in the name of a service program, law enforcement agency, or fire department to be maintained for use as provided in this section.

 (2) A pharmacist who dispenses, furnishes, or otherwise provides an opioid antagonist pursuant to a valid prescription, standing order, or collaborative agreement shall provide instruction to the recipient in accordance with the protocols and instructions developed by the department under this section.
 2. A service program, law enforcement agency, or fire department may obtain a prescription for and maintain a supply of opioid antagonists. A service program, law enforcement agency, or fire department that obtains such a prescription shall replace an opioid antagonist upon its use or expiration.
 3. A first responder employed by a service program, law enforcement agency, or fire department that maintains a supply of opioid antagonists pursuant to this section may possess and provide or administer such an opioid antagonist to an individual if the first responder reasonably and in good faith believes that such individual is experiencing an opioid-related overdose.
 4. The following persons, provided they have acted reasonably and in good faith, shall not be liable for any injury arising from the provision, administration, or assistance in the administration of an opioid antagonist as provided in this section:

 a. A first responder who provides, administers, or assists in the administration of an opioid antagonist to an individual as provided in this section.
 b. A service program, law enforcement agency, or fire department.
 c. The prescriber of the opioid antagonist.
 5. The department may adopt rules pursuant to chapter 17A to implement and administer this section.