A certificate of free sale is evidence that goods such as food items, cosmetics, biologics, or medical devices are legally sold or distributed in the open market, without restrictions and approved by the regulatory body in the United States.
A certificate of free sale may be stamped by either a U.S. Chamber of commerce or the U.S. Food and Drug Administration, depending on the custom requirements of the importing country. Some countries require that the certificate of free sale is authenticated by a Notary public and a Secretary of State or by legalization.