Inspection Services Division

1220 N Street, Sacramento, CA 95814 •

Livestock Drug Program

The Livestock Drug Program regulates over-the-counter livestock drugs. A program Registration Specialist reviews the livestock drugs for safety and efficacy. Particularly, livestock drugs intended for food production animals should be used in a way as not to cause a drug residue in food products derived from these animals. Fees are collected for licensing and registration to fund this program. Veterinarian prescriptions are exempt from registration.


AUS Regulation Status Update

The program has released modified regulation text regarding the sale of Medically Important Antimicrobial Drugs and restricted livestock drugs. The comment period has closed. The modified text can be found at:

The program is in the process of reviewing public comments. Updates will be posted as they become available.

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livestock resource books


All Medically Important Antimicrobial Drugs (MIADs) will require a prescription or Veterinary Feed Directive (VFD) to be purchased or used in California after January 1, 2018. This change will affect certain MIADs that have been available over the counter (OTC); a list of drugs affected by this change is available here.

For more information about the new requirements for MIADs, please visit the Antimicrobial Use and Stewardship website:

Please NOTE: The requirements to maintain a Restricted Livestock Drug Retailer license are not changing and drugs such as wormers, hormones, coccidostats, and non-MIAD antibiotics can continue to be sold under your Restricted Livestock Drug Retailer license. A list of drugs are not affected by this change is available here.

CDFA Division of
Inspection Services