The United States' Food and Drug Administration (FDA) is the nation's regulatory body for food and drug products. The administration reviews new products as well as oversees the management of food related issues around the country.
The openFDA API provides publicly accessible data from the FDA about three subjects: drugs, devices, and foods. This API is currently a beta research project and the results unvalidated. The data is Public Domain released from Creative Commons CC0. Results are returned as JSON. An API key is required and is free.