3-662. Manufacture or sale not prohibited
This article does not prohibit the manufacture or sale of:
1. Trade products complying with this chapter.
2. Proprietary foods containing milk or skim milk to which have been added any fat or oil other than milk fat if these foods are clearly labeled to show their composition and the fact that they are to be sold exclusively for use as directed by a physician or a registered nurse practitioner for the feeding of invalids and children.
3. Real products flavored with chocolate or cocoa, with the presence of cocoa fat in an amount not exceeding that which is naturally present in the chocolate or cocoa used.
4. Real products the vitamin content of which is increased with the presence of a food oil as a carrier of such vitamins, if the quantity of such food oil does not exceed one one-hundredth per cent of the weight of the finished real products.