Cal. Health and Safety Code § 11872

(a) (1) Notwithstanding any other law except for Division 5 (commencing with Section 6300) of the Labor Code and Chapters 3.2 (commencing with Section 330), 3.3 (commencing with Section 345), 3.5 (commencing with Section 401), 4 (commencing with Section 450), and 7 (commencing with Section 14000) of Division 1 of Title 8 of the California Code of Regulations, a person who, in good faith, administers naloxone hydrochloride or another opioid antagonist by nasal spray or by auto-injector on the premises of a stadium, concert venue, or amusement park to a person who appears to be experiencing an opioid overdose shall not be liable in a civil action, or be subject to criminal prosecution for their acts or omissions in administering the naloxone hydrochloride or another opioid antagonist. (2) (A) The protection specified in subdivision (a) shall not apply in a case of gross negligence or willful and wanton misconduct of the person who renders emergency care treatment by the use of naloxone hydrochloride or another opioid antagonist. (B) Subparagraph (A) shall not apply to an employee of a stadium, concert venue, or amusement park, or an employee of an entity that owns, occupies, or operates a stadium, concert venue, or amusement park. (b) Notwithstanding any other law except for Division 5 (commencing with Section 6300) of the Labor Code and Chapters 3.2 (commencing with Section 330), 3.3 (commencing with Section 345), 3.5 (commencing with Section 401), 4 (commencing with Section 450), and 7 (commencing with Section 14000) of Division 1 of Title 8 of the California Code of Regulations, a stadium, concert venue, or amusement park, or its employees, or an entity that owns, occupies, or operates a stadium, concert venue, or amusement park, or its employees, shall not be liable in a civil action, or be subject to criminal prosecution, for the administration of naloxone hydrochloride or another opioid antagonist on the premises of the stadium, concert venue, or amusement park, including by an employee of the stadium, concert venue, or amusement park, or by an employee of the entity that owns, occupies, or operates the stadium, concert venue, or amusement park. (c) Notwithstanding any other law except for Division 5 (commencing with Section 6300) of the Labor Code and Chapters 3.2 (commencing with Section 330), 3.3 (commencing with Section 345), 3.5 (commencing with Section 401), 4 (commencing with Section 450), and 7 (commencing with Section 14000) of Division 1 of Title 8 of the California Code of Regulations, a stadium, concert venue, or amusement park, or its employees, or an entity that owns, occupies, or operates a stadium, concert venue, or amusement park, or its employees, shall have no obligation to administer naloxone hydrochloride or another opioid antagonist in the event of an apparent opioid overdose on the premises of the stadium, concert venue, or amusement park, and shall not be liable in a civil action, or be subject to criminal prosecution, if they fail to identify an apparent opioid overdose or fail to administer naloxone hydrochloride or another opioid antagonist on the premises of the stadium, concert venue, or amusement park.