Cal. Food & Agric. Code § 75504

No action taken by the commission or by any individual in accordance with this chapter or with the regulations adopted under this chapter, is a violation of the Cartwright Act (Chapter 2 (commencing with Section 16700) of Part 2 of Division 7 of the Business and Professions Code), the Unfair Practices Act (Chapter 4 (commencing with Section 17000) of Part 2 of Division 7 of the Business and Professions Code), or any statutory or common law against monopolies or combinations in restraint of trade.