FDA or USDA: who regulates my food product?

It depends on the product. The USDA Food Safety and Inspection Service (FSIS) regulates aspects of the safety and labeling of traditional (non-game) meats, poultry and certain egg products, and the FDA regulates other foods, including dietary supplements, bottled water, food additives and infant formula.

Some products with small amounts of meat fall to the FDA. According to the FDA, these include game meats such as deer or rabbit, products with 3% or less raw meat or less than 2% cooked meat, products with less than 2% cooked poultry meat or less than 10% cooked poultry skins, and closed-face sandwiches unless part of a dinner. USDA-inspected meat and poultry establishments follow the FSIS HACCP rule (9 CFR 417). A plant regulated exclusively by the USDA throughout the entire facility does not have to register with the FDA; if it also makes FDA-regulated products, that exemption does not apply.