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Recall data is sourced from official U.S. government agencies (CPSC, FDA, NHTSA, USDA) and processed using AI to improve readability. This site is not affiliated with or endorsed by any government agency. Always refer to the original agency notice for authoritative information.

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Medium RiskFDA Vet
Pets & Animals/Pet Medications

Virbac Inc: Iverhart Plus and Worm Shield Recalled for Stability Failure

Agency Publication Date: September 9, 2009
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Summary

Virbac Inc. is recalling 8,859 display units of Iverhart Plus and Worm Shield chewable tablets (ivermectin/pyrantel) used for heartworm and worm prevention in large dogs (51-100 lbs.). The recall was initiated because the medication failed stability testing at the 3-month interval, showing lower-than-expected potency. These prescription tablets were distributed nationwide to veterinary distributors in 10-box display units, with each box containing six blister-packaged tablets.

Risk

The reduced potency of the active ingredients means the medication may not effectively prevent heartworm disease or control intestinal parasites in dogs. This could lead to undiagnosed infections and serious health complications for pets relying on the treatment.

What You Should Do

  1. Identify if you have the affected products by checking for 'Iverhart Plus Flavored Chewables' (51-100 lbs.) or 'Worm Shield Flavored Chewables' (51-100 lbs.) with ANADA number 200-302 on the packaging.
  2. Check your medication boxes for the specific dosage of 272 mcg. ivermectin and 227 mg. pyrantel, typically sold in blue-coded packaging for dogs weighing 51 to 100 pounds.
  3. Contact your veterinarian or pharmacist immediately to determine if your specific lot is affected and to discuss alternative heartworm prevention for your pet.
  4. Return any unused blister packs or boxes to the veterinary clinic or pharmacy where they were purchased for a refund.
  5. Contact Virbac Inc. directly at their Bridgeton, Missouri headquarters or through your veterinarian for further instructions regarding this recall.
  6. For additional questions, contact the FDA Center for Veterinary Medicine at 1-240-402-7002.

Your Remedy Options

💰Full Refund

Contact healthcare provider and return product

How to: Contact your healthcare provider or pharmacist for guidance. Return any unused product to the pharmacy for a refund

Affected Products

Product: Iverhart Plus Flavored Chewables (51-100 lbs.)
Model:
ANADA 200-302
Recall #: V-272-2009
Product: Worm Shield Flavored Chewables (51-100 lbs.)
Model:
ANADA 200-302
Recall #: V-272-2009

Additional Information

Agency: Food and Drug Administration (FDA)
Event ID: 52894
Status: Resolved
Manufacturer: Virbac Inc
Sold By: veterinary distributors
Manufactured In: United States
Units Affected: 8,859/10/6-tablet box display units
Distributed To: Nationwide

Were You Affected by This Recall?

If you or a family member were harmed by this recalled product, you may have legal rights. Consider consulting a consumer protection attorney to understand your options for compensation.

Find an Attorney

This is general information, not legal advice. Go Backs is not a law firm and does not provide legal services.

AI-Enhanced Content: The summary, action steps, and risk assessment on this page were generated by AI from official government recall data to improve readability. This is not legal or medical advice. Always refer to the official agency sources below for authoritative information.

Sources: FDA iRES · Raw API Response