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Publication 52 - Hazardous, Restricted, and Perishable Mail >
4 Restricted Matter > 47 Controlled Substances and Drugs > 475 Rulings
Rulings must be based on the chemical composition of a product; the composition of commercial products is ever–changing-e.g., the packaging declares a “new and improved formula.”
Requests for rulings must include the trade name of the product, as well as information regarding any know hazardous ingredients. A generic description of the item (e.g., “tranquilizers”) is not sufficient. Requests for rulings are directed to the local postmaster (see 215.3).