Cal. Food & Agric. Code § 78204

No action taken by the commission, or by any individual in accordance with this chapter or with regulations adopted under this chapter, is a violation of the so-called 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 that Part 2), or any statutory or common law against monopolies or combinations in restraint of trade.