California Code, Health and Safety Code - HSC § 110413

No publisher, radio or television broadcast licensee, or agency or medium for the dissemination of an advertisement, except the manufacturer, packer, distributor, or seller of the food, drug, device, or cosmetic to which a false advertisement relates, shall be liable under this article for the dissemination of the false advertisement, unless he or she has refused to furnish the department with the name and address of the manufacturer, packer, distributor, seller, or advertising agency, residing in this state who caused him or her to disseminate the advertisement.