Cal. Health & Safety Code § 110280

If the guarantee is to the effect that the food, drug, device, or cosmetic is not in violation within the meaning of the federal act, it shall be sufficient for all the purposes of this part, and shall have the same force and effect as though it referred to this part, unless, pursuant to this part, the standard for the food, drug, device, or cosmetic concerned is higher than the standard for a like food, drug, device, or cosmetic under the federal act. In that case, this part shall prevail over the federal act.