The label of any package of a food, drug, device, or cosmetic that bears a representation as to the number of servings of the commodity contained in the package shall bear a statement of the net quantity, in terms of weight, measure, or numerical count, of each serving.
Source:
Section 110345, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=HSC§ionNum=110345..