Data sources and licences

openFDA Animal & Veterinary adverse event reports

• Publisher: U.S. Food and Drug Administration, Center for Veterinary Medicine, through openFDA.
• Access: the bulk download files listed at api.fda.gov/download.json (quarterly partitions of zipped JSON). No API key is involved.
• Licence: CC0 1.0 public domain dedication; use is subject to the openFDA terms of service.
• Masking: FDA replaces the brand name and manufacturer of every drug with "MSK". The site keeps that masking; see why you will not find brand names in the statistics.
• Release used: 28 Sep 2026, 1,357,245 reports with a usable receive date, received through 31 Mar 2026. 92 records without a usable receive date are left out.
• Cadence: quarterly; FDA notes a delay of three to six months between receiving a report and posting it.
• Required notice, shown in the footer of every page: "Do not rely on openFDA to make decisions regarding medical care. While we make every effort to ensure that data is accurate, you should assume all results are unvalidated. We may limit or otherwise restrict your access to the API in line with our Terms of Service."

FDA Approved Animal Drug Products (Green Book)

• Publisher: FDA Center for Veterinary Medicine, Animal Drugs @ FDA.
• Used for: the dictionary of active-ingredient names against which report ingredient fields are matched, and the reference lists of approved products (trade names, sponsor, ingredients, species, application number) shown separately from the statistics (2,429 applications as of 30 Sep 2026). It is never joined to a report: openFDA masks brand and manufacturer names, and no count on this site is attributed to a brand, application or company.
• Licence: work of the U.S. government, public domain (17 U.S.C. §105). Trade names are the property of their owners and are used only to identify the products FDA lists.
• Cadence: monthly; the copy used here is refreshed weekly.

FDA's statement on using these data

An API dataset query result cannot be used to estimate the risk associated with the product or compare one drug or device product with another. When looking at the results, be aware that there is no certainty that the reported drug or device caused the adverse event. This dataset should not be the sole source of information for clinical decision-making or other assumptions about the safety or effectiveness of a product. The adverse event may have been related to an underlying disease, other drugs used at the same time or other non-drug related sources.

Source: FDA, Adverse Event Reports for Animal Drugs and Devices. Any reference to a commercial product on this site is not an endorsement by FDA, and FDA has not reviewed this site.