Heartworm and Parasite Preventive Recalled

Virbac Animal Health voluntarily recalled one lot of its canine heartworm and internal parasite preventive Iverhart Max Chewable Tablets.

By | Posted: April 13, 2012, 5 p.m. EDT

The company has recalled the tablets because the ivermectin failed to meet the company’s stability specifications. .

Dogs dosed with tablets from the affected lot (#110482 for large dogs, 50.1 to 100 lbs.) may not be protected against heartworm disease, the company says.

The lot number is stamped on the side lid or flap of the product’s box in a white text field and on the blister foil of the individual doses.
Virbac, of Fort Worth, Texas, sent letters to veterinary distributors instructing them to cease distribution of the affected lot and to advise veterinary clinics in receipt of the recalled product to cease dispensing it.

The other active ingredients in Iverhart were not affected, the company said, meaning the tablets should provide protection against other internal parasites. Virbac tested other lots of Iverhart and confirmed only one lot was affected.

No heartworm-related adverse events or illnesses had been reported to Virbac as of late March. If veterinarians see a potentially affected dog, they should contact Virbac Technical Services at 1-800-338-3659 x3052 to discuss testing procedures.

If a dog taking the product is infected with heartworms, its treatment will be covered under the Iverhart product satisfaction guarantee, the company says.


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Kiley Rae   Omaha, NE

4/17/2012 12:22:49 AM

Man... I remember some of the scariest moments in my teenage years were when my beloved Rottweiler (Angel Buster Dog the Great, died at 14½ years) had seizures not once, but twice, from heartworm medication. He was a BIG dog... so it took 3 girls to take him to the vet right away in the "doggy gurney."

Eventually we stopped giving it to him because he much preferred to be inside anyway... the risk paid off in the mean time. Eventually they did find a heartworm med that didn't make him so sick. That dog weighed 165lbs at the times & that medicine still dang near took him out. Pretty scary. =(

I hope not many of you can relate to this!

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