Veterinary Feed Directive: VCPR, Written Orders, and Withdrawal

The Veterinary Feed Directive is the FDA rule that controls how medically important antibiotics get into animal feed. Since January 2017, a producer cannot buy these drugs over the counter for feed use. A licensed veterinarian has to issue a written VFD order first, and the feed can only be used to treat, control, or prevent disease, not to promote growth. The rule reaches the veterinarian who writes the order, the mill that manufactures the feed, the distributor that ships it, and the producer who feeds it, and a missing signature or an incomplete field can make the feed legally adulterated.

Which Drugs and Animals Fall Under the Rule

A drug is covered when the FDA classifies it as “medically important,” meaning it belongs to a class also used in human medicine. Tetracyclines, penicillins, and macrolides are among the most commonly affected classes, and the full list spans dozens of individual drugs.¹ Guidance for Industry #213 asked drug sponsors to voluntarily move these products from over-the-counter to VFD status for feed use and to prescription status for water use, and all affected sponsors completed the shift by January 2017.²

The rule applies whenever a medically important antimicrobial is delivered through feed, in any species. Beef cattle, dairy cows, swine, chickens, and turkeys are the most commonly affected. Sheep, goats, aquaculture species, and honeybees also fall under the rule when treated with a VFD drug.³

Not every medicated feed additive triggers the rule. Ionophores and certain coccidiostats stay available without veterinary authorization because they are not used in human medicine.⁴ To confirm whether a specific product requires a VFD, check the FDA’s list of VFD drugs or the Green Book database of approved animal drug products.⁵

The Veterinarian-Client-Patient Relationship Comes First

No VCPR, no VFD. The federal definition requires three things at once: the veterinarian has taken responsibility for medical judgments about the animals, the client has agreed to follow the veterinarian’s instructions, and the veterinarian has enough familiarity with the animals to make at least a preliminary diagnosis.⁶

That familiarity has to come from physically examining the animals or making timely visits to the premises. Phone calls, video consults, and emailed photos are not enough on their own to create the relationship in the first place. The FDA has stated that telemedicine cannot substitute for the in-person component when the VCPR is being established, though it can help maintain a relationship that already exists.⁷

The veterinarian must be licensed in the state where the animals are kept. Some states impose stricter VCPR rules than the federal baseline, and in those states the stricter rules apply. The veterinarian also has to remain available for follow-up if the treatment fails or the animals react badly.

What Has to Be on the Written Order

The VFD order is the legal document that lets a distributor release medicated feed to a producer. Every required field has to be complete before the feed can be shipped. Under 21 CFR 558.6(b)(3), the order must include:

The veterinarian’s name, address, phone number, and signature (electronic or handwritten).
The client’s name, address, and phone number.
The premises where the animals are kept.
The date of issuance and the expiration date.
The drug name, indication for use, concentration in the feed, and duration of use.
The species, production class, and approximate number of animals to be fed by the expiration date.
The withdrawal time, special instructions, and any cautionary statements required by the drug’s approval.
The number of authorized reorders, if the label allows any. If the label is silent on refills, none are allowed.
The mandatory extra-label prohibition statement.
For feed containing more than one VFD drug, a combination-drug affirmation from the veterinarian specifying which drugs are authorized together.

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The refill point matters in day-to-day practice. If the approval does not expressly authorize reorders, the veterinarian cannot add any, and a producer who needs another round has to get a new order rather than calling the mill for a refill.³

Expiration Date Is Not the Same as Duration of Use

These two fields cause more compliance problems than almost anything else on the form. The expiration date is the last day the authorization is valid, meaning the last day the medicated feed may be fed. The duration of use is the number of days the animals actually eat the medicated feed as part of the treatment protocol.⁹

Tilmicosin for swine, for example, carries a 21-day duration of use inside a 90-day expiration window. The 90 days give the producer time to obtain the feed and start treatment; the animals only receive it for 21. If a VFD is about to expire before treatment is complete, the producer has to contact the veterinarian for a new order rather than keep feeding past the expiration date. If the drug’s approved label does not specify a shorter window, the expiration date defaults to six months from the date of issuance.⁸

No Extra-Label Use in Feed

This is the sharpest limit in the whole framework. Federal law flatly prohibits extra-label use of any approved drug in animal feed.¹⁰ A veterinarian cannot authorize a VFD drug at a different dose, in a different species, or for a different disease than the label specifies. Every order must carry the statement: “Use of feed containing this veterinary feed directive (VFD) drug in a manner other than as directed on the labeling (extralabel use) is not permitted.”⁸

AMDUCA gives veterinarians broad authority to prescribe approved drugs for off-label uses in animals, but the statute carves feed out of that authority explicitly.¹¹ The FDA does exercise enforcement discretion for certain extra-label medicated feed uses in minor species, but no producer should assume that discretion applies without checking with the veterinarian and the relevant FDA guidance.¹²

Records, Labels, and Distribution

When the order is finalized, the veterinarian keeps the original and the client and distributor each get a copy. Transmission can happen by mail, fax, or electronic system. The distributor cannot release the feed until a valid VFD is in hand.⁸

All three parties must keep their copies for two years from the date of issuance. The veterinarian retains the original in whatever form it was created; the distributor and client can keep paper or electronic copies. The records have to be available for FDA inspection during normal business hours.⁸

Distributors have extra obligations. Every distributor has to file a one-time notification with the FDA before shipping VFD feed for the first time. When one distributor ships to another rather than to the end client, the shipping distributor must first obtain an acknowledgment letter from the receiving distributor. The FDA’s 2024 final revision of Guidance #120 spells out these distributor-to-distributor scenarios in detail.¹³

Every bag or container of VFD feed must carry a prominent label reading: “Caution: Federal law restricts medicated feed containing this veterinary feed directive (VFD) drug to use by or on the order of a licensed veterinarian.”¹⁴

Withdrawal Periods

The withdrawal period is the minimum number of days between the last dose of medicated feed and the day an animal can be slaughtered for food or its milk or eggs sold. The order must list the applicable withdrawal time, and the producer is legally responsible for observing it. Sending an animal to slaughter before the withdrawal period ends can produce violative drug residues in meat, which brings its own consequences under the USDA’s residue monitoring program.

The Food Animal Residue Avoidance Databank, known as FARAD, is a USDA-funded, university-based program that provides scientifically based withdrawal interval recommendations. Veterinarians, extension specialists, and producers can reach FARAD through its toll-free call center or its public website when a label is unclear or a treatment course is complicated.¹⁵

Penalties for Getting It Wrong

Failure to follow VFD requirements makes the resulting feed legally adulterated and misbranded under the Federal Food, Drug, and Cosmetic Act. Enforcement usually starts with a warning letter that gives the producer or distributor 15 working days to respond with a corrective action plan. The letter identifies the specific violations and warns that seizure of the feed and court injunctions may follow if the problems are not fixed.¹⁶

Criminal penalties under 21 USC 333 come in two tiers. A first-time violation is a misdemeanor punishable by up to one year in prison, a fine of up to $1,000, or both. A second conviction, or a violation committed with intent to defraud or mislead, becomes a felony punishable by up to three years in prison, a fine of up to $10,000, or both.¹⁷ Most VFD enforcement stops at the warning letter stage when the operation corrects the problems promptly. Records that are incomplete, missing, or fabricated push an investigation toward the harder end of that scale.

1
World Health Organization. WHO List of Medically Important Antimicrobials
2
U.S. Food and Drug Administration. Guidance for Industry #213
3
U.S. Food and Drug Administration. Veterinary Feed Directive Requirements for Veterinarians
4
U.S. Food and Drug Administration. Drugs with Veterinary Feed Directive (VFD) Marketing Status
5
U.S. Food and Drug Administration. Approved Animal Drug Products (Green Book)
6
eCFR. 21 CFR 530.3 – Definitions
7
U.S. Food and Drug Administration. Veterinarian-Client-Patient Relationships, Prescribing/Dispensing Animal Drugs and Telemedicine
8
eCFR. 21 CFR 558.6 – Veterinary Feed Directive Drugs
9
U.S. Food and Drug Administration. Veterinary Feed Directive (VFD) Producer Requirements
10
eCFR. 21 CFR Part 530 – Extralabel Drug Use in Animals
11
Office of the Law Revision Counsel. 21 USC 360b – New Animal Drugs
12
U.S. Food and Drug Administration. CPG Sec. 615.115 Extralabel Use of Medicated Feeds for Minor Species
13
U.S. Food and Drug Administration. VFD Requirements for Distributors (Who Do Not Manufacture VFD Feed)
14
U.S. Food and Drug Administration. Veterinary Feed Directive Producer Requirements
15
Food Animal Residue Avoidance Databank. About Us
16
U.S. Food and Drug Administration. Land View, Inc. MARCS-CMS 638704 — November 07, 2022
17
Office of the Law Revision Counsel. 21 USC 333 – Penalties