Health and Safety Code §483.102

(a) A prescriber may, directly or by standing order, prescribe an opioid antagonist to: (1) a person at risk of experiencing an opioid-related drug overdose; or (2) a family member, friend, or other person in a position to assist a person described by Subdivision (1). (b) A prescription issued under this section is considered as issued for a legitimate medical purpose in the usual course of professional practice. (c) A prescriber who, acting in good faith with reasonable care, prescribes or does not prescribe an opioid antagonist is not subject to any criminal or civil liability or any professional disciplinary action for: (1) prescribing or failing to prescribe the opioid antagonist; or (2) if the prescriber chooses to prescribe an opioid antagonist, any outcome resulting from the eventual administration of the opioid antagonist.