veterinary feed directives for the sheep industry how … · · 2017-02-07veterinary feed...
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Veterinary Feed Directives for the Sheep IndustryHow Did We Get Here?
And What Do We Do Now?
Meg Oeller, DVMDirector, Office of Minor Use & Minor Species
FDA Center for Veterinary Medicine
American Sheep Industry Association ConventionDenver, ColoradoJanuary 27, 2017
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Today’s Topics
• What is a Veterinary Feed Directive?
• Why is this change happening?
• The paper trail
• How does it affect you?
• Some specifics
• Other options
• Looking into the future
www.fda.gov
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What is a Veterinary Feed Directive?
• It is a Marketing status – animal drugs are approved as:– Over-the-counter (OTC)
– Prescription (Rx) (injections, water medications, tablets, etc.), or
– Veterinary Feed Directive (VFD) (medicated feed)
• This is based on the directions for use and whether (Rx, VFD) or not (OTC) a veterinarian’s knowledge is needed to use the product safely/effectively.
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Prescriptions
• Some antimicrobial water soluble powdersused for preparing medicatedwater changed from OTC to Rxstatus.
• Rx status requires a licensed veterinarian.
• The prescription can be filled by your vet or by a pharmacist at a distributor.
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The VFD
• It is prepared by your veterinarian and given to you for presentation to the feed mill, or it can go there electronically.
• Vet makes the diagnosis, chooses the medication, determines the dose and duration, notes the withdrawal period, etc. as labeled.
• It must be issued within a valid veterinarian-client-patient relationship (VCPR).
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What’s a valid VCPR?• There are 3 main points (paraphrased):
1. A licensed vet has assumed responsibility for making medical judgements for the animal(s)
2. The vet knows the animal(s) well enough to make at least a preliminary diagnosis
3. The vet is available for follow up in case of adverse reactions or failure of treatment
• State or Federal definition - See: http://www.fda.gov/AnimalVeterinary/DevelopmentApprovalProcess/ucm460406.htm
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OTC to VFD• Till now medicated feeds and water were
almost all OTC.
• As of this month (January, 2017) medically important antimicrobials used in medicated feeds and water are VFD or Rx, respectively.
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Why is this change happening?
• Antimicrobial Resistance!
• Complex issue – many causes–All uses are part of the picture
(human, animal, horticultural, other)
www.fda.gov
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Antimicrobial Resistance
• In very simple terms, use of an antibiotic, especially at a low dose, can kill the weak (sensitive) bacteria and leave the strong (resistant) ones to multiply.
• If food from treated animals becomes contaminated with these strong bacteria, and
• If people get sick from eating that food, the antibiotics normally used may not work.
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Antimicrobial Resistance…• This same problem occurs with resistance of
parasites to de-wormers, etc.
• At this time, we are only looking at the issue of antibiotic use in animal agriculture that can have an impact on human medical use –“medically-important antimicrobials”.
• There are many people/groups concerned about use of these medicines, especially any prolonged low-dose use in farm animals.
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The Paper Trail - Chronologically
• Guidance for Industry # 152
• Guidance for Industry # 209
• Guidance for Industry # 213
www.fda.gov
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GFI #152 (10/2003)
Evaluating the Safety of Antimicrobial New Animal Drugs with Regard to Their
Microbiological Effects on Bacteria of Human Health Concern
In other words, information a drug company needs to provide to FDA to address antimicrobial resistance as part of the human food safety data supporting a new approval of an antibiotic for use in a food-producing animal.
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GFI #209 (4/2012)
The Judicious Use of Medically Important Antimicrobial Drugs in Food-Producing Animals
• FDA’s overall policy
• Limit use of medically-important antimicrobial drugs in food-producing animal to those uses
– Considered necessary for animal health (therapeutic uses)
– Include veterinary oversight/consultation
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GFI #213 (12/2013)
New Animal Drugs and New Animal Drug Combination Products Administered in or on Medicated Feed or Drinking Water of Food
Producing Animals: Recommendations for Drug Sponsors for Voluntarily Aligning Product Use
Conditions with GFI #209
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GFI #213 Contents
• Dec 2016 was the target for sponsors to make the changes recommended in GFI #209.
• Withdraw some production label claims –E.g., “for weight gain and feed efficiency”.
• Transition to veterinary oversight –
– Medicated drinking water to Prescription (Rx)
– Medicated feeds to Veterinary Feed Directive (VFD)
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How Does This Affect You?
• What drugs are included?
• What do you need to do?
• What do your vets need to do?
• What about the feed mills?
www.fda.gov
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What Drugs Are Included?
“Medically-Important” Antibiotics:
• Antimicrobial drugs that are considered important for therapeutic use in humans.
• These drugs are listed in Appendix A of GFI #152.
• And on the next slides…
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Approved applications for VFD medicated feed as of 1/2017
Apramycin Oleandomycin Sulfamerazine
Hygromycin B Erythromycin Sulfamethazine
Neomycin Tylosin Sulfaquinoxaline
Streptomycin Penicillin Chlortetracycline
Ormetoprim Virginiamycin Oxytetracycline
Lincomycin Sulfadimethoxine
www.fda.gov
Note: Red = withdrawn. Some others may not be marketed
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Already VFD status
Avilamycin, florfenicol, tilmicosin, and tylvalosin were already approved as VFD drugs before this change came about.
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Drugs that need a prescription for use in drinking water
Apramycin Erythromycin Carbomycin
Gentamicin Tylosin Sulfachloropyrazine
Neomycin Penicillin Sulfadimethoxine
Spectinomycin Oxytetracycline Sulfamerazine
Streptomycin Chlortetracycline Sulfamethazine
Lincomycin Tetracycline Sulfaquinoxaline
:
Note: Some may not be marketed
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Already Rx status
Florfenicol, tilmicosin, and tylvalosin were already approved as prescription drugs for use in drinking water before this change came about.
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What do you need to do?
• Don’t panic. Most drugs aren’t affected –dewormers, etc.
• Be sure you have a valid Veterinarian-Client-Patient Relationship (VCPR).
• Be sure that your vet understands your needs.
• Check how to get prescriptions or VFDs to your distributor or feed mill.
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VFD Feed Distributors
Listed by state -
http://www.fda.gov/downloads/AnimalVeterinary/Products/AnimalFoodFeeds/MedicatedFeed/UCM096059.pdf
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Online Sources for You
• http://www.fda.gov/AnimalVeterinary/Products/AnimalFoodFeeds/MedicatedFeed/BlueBirdLabels/ucm081800.htm shows the label claims and marketing status of medicated feeds for sheep (there is also a link for goats).
• https://animaldrugsatfda.fda.gov/adafda/views/#/search is a searchable database for approved animal drugs.
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What do your vets need to do?• Prepare the VFD – a written statement by a
licensed veterinarian that authorizes the use of a VFD drug (or combination) in or on animal feed.
• Work in the context of a valid VCPR.
• Follow the rules for what information needs to be included.
• FDA Brochures available: Veterinary Feed Directive (VFD) Requirements for Veterinarians 2015: http://www.fda.gov/AnimalVeterinary/DevelopmentApprovalProcess/ucm455416.htm
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This information includes:
• Vet’s name, address, phone
• Client’s name, address, phone
• Location of the animals
• Date issued, Date of expiration
• Name of the drug
• Species & production class & approximate number of animals to be treated
• Indication (disease or condition)
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And…• Level of drug in the feed and duration of use
• Withdrawal time
• 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.”
• Signature (electronic or written)
• Some other information in special cases
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VFD Expiration Date
– Specifies the period of time for which the VFD authorization is valid.
– A VFD feed should not be fed after the expiration date (i.e., after VFD authorization expires).
– May be specified on the product label; if not – it cannot exceed 6 months after the date of issuance.
– The veterinarian can use his or her medical judgment to determine whether a more limited period is warranted.
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Refills?
• Currently, there are no approved VFD drugs that allow refills or reorders.
• Means that the vet cannot write on the VFD that you can refill it.
• If you have another outbreak, the vet needs to decide whether or not a new VFD is appropriate.
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What about the feed mills?
• The regulations refer to a ‘‘distributor’’ There are two kinds of distributors:1. Only distributes VFD feed
2. Manufactures and distributes VFD Feed
• Distributors must notify FDA:– Prior to the first time they distribute animal
feed containing a VFD drug
– Within 30 days of any change of ownership,business name, or business address
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Excellent Resource for VFDshttp://www.fda.gov/AnimalVeterinary/
DevelopmentApprovalProcess/ucm071807.htm
For very good overview video:
http://www.fda.gov/AnimalVeterinary/SafetyHealth/AnimalFeedSafetySystemAFSS/ucm529868.htm
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Some Sheep/Goat Specifics
• What drugs are approved?
• Other options
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What medicated feeds are approvedfor Sheep?
Drug Indication Status
Chlortetracycline Vibrionic abortion VFD
Thiabendazole Roundworms OTC
Decoquinate Coccidiosis OTC
Oxytetracycline(also + neomycin)
Bacterial enteritis & Pneumonia
VFD
Lasalocid Coccidiosis OTC
Neomycin Bacterial enteritis VFD
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What water medications are approvedfor Sheep?
Drug Indication Status
Oxytetracycline Bacterial enteritis & Pneumonia
Rx
Neomycin Bacterial enteritis Rx
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Other Options
• Legal Extra-label use
• Compliance Policy Guide 615.115
• Drug Approvals in the pipeline
www.fda.gov
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Ranking• Best – use a drug approved for the species and
disease to be treated – not a lot available– Shown to be safe and effective– Dosing and withdrawal times have been accepted
• Next best – Legal extra-label use – for water meds, not an option for medicated feed
• Next best – Enforcement discretion for medicated feeds for minor species – CPG 615.115
• Worst – illegal use – unapproved drugs
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Legal Extra-label Drug Use (ELDU)
• Veterinarians can use approved human and animal drugs in food-producing animals for uses not on the label if -
– No approved product is available for the use
– A valid VCPR exists
– The use is therapeutic (not production)
– The vet assigns a withdrawal time
– The vet keeps appropriate records
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Limitations of Legal ELDU
• Some drugs are prohibited from extra-label use in food-producing animals - E.g., clenbuterol, chloramphenicol, fluoroquinolones…
• ELDU is ok for “dosage form” drugs (water medications, injectable, topical, tablets, etc.)
• EXTRA-LABEL USE OF MEDICATED FEED IS NOT PERMITTED.
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Status
• So.
• Few medicated feeds for sheep.
• Extra-label use of medicated feed is not legal.
• FDA recognized the problem for producersof minor species that need medicated feedfor treatment.
www.fda.gov
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CPG 615.115
• CPG = Compliance Policy Guide
• A CPG gives directions to the enforcement part of FDA (inspectors in the field).
• It is a way to allow use under certain specific conditions.
• In short, if you follow this CPG, we areunlikely to take action against you even though what you are doing isn’t legal.
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Brief History• First published in April, 2001
• Just for minor species (not horses, cattle, pigs, chickens, turkeys, dogs, or cats)
• Use medicated feeds just as approved for a major species extra label in a minor species
• Could use medicated cattle feed for sheep, but could not change the label, concentration, nutrition, etc.
• Did not include VFDs
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Revised CPG 615.115
• Published 12/2016
• Change of many feeds to VFD – no ELDU
• Committee assembled to rewrite the CPG
• Covers how to use OTC and VFD feeds for minor species
• The CPG now allows the nutrition to be changed to be appropriate for the minor species.
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Conditions of the CPG
• You need a valid VCPR.
• The use must be therapeutic, not production.
• For sheep, the medicated feed must be approved in a mammalian species (the CPG limits avian to avian, mammal to mammal, and aquatic to aquatic species).
• You still cannot change the concentration of the drug in the feed from the approved level.
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And…
• The responsibilities of the vet, producer, and feed mill are spelled out in the CPG.
• Includes instructions for how the vet should fill out the VFD (special instructions).
• Describes the records that each must keep and how long you need to keep them.
• http://www.fda.gov/AnimalVeterinary/NewsEvents/CVMUpdates/ucm529164.htm
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Going Forward
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Looking into the Future
• Need more drugs approved for sheep & goats.
• Tell the pharmaceutical companies what you need.
• Support researchers doing studies to support drug approvals.
• FDA’s Office of Minor Use & Minor Species will continue to advocate for more safe and effective products for legal use.
www.fda.gov
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Approvals in the Pipeline
• The CPG is a short-term solution.
• More approvals are needed.
• USDA’s Minor Use Animal Drug Programwith FDA’s Dr. Amy Omer are currently working to do the studies to support approval of more products for use in sheep and goats.
www.fda.gov
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Status of those Projects
A new animal drug application contains thefollowing sections:
• Effectiveness
• Target Animal Safety
• Human Food Safety
• Environmental Safety
• Manufacturing
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Progesterone for Goats
Technical Section Status
Effectiveness Study complete – to be reviewed
Target Animal Safety Complete
Human Food Safety Complete
Environmental Safety Complete
Manufacturing Complete
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Other Projects
• Early work done with tulathromycin for respiratory disease in sheep and goats
• Looking at new projects for:
– Chlortetracycline for sheep for respiratory disease
– Meloxicam for sheep for pain, fever, & inflammation
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For More Information
• Meg Oeller – Director, Office of Minor Use & Minor Species Animal Drug Development
[email protected] (240) 402-0566
• Amy Omer – FDA Liaison to USDA’s Minor Use Animal Drug Program
[email protected] (240) 402-0564
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Questions?
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