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Iverhart Max Lot Recalled on Efficacy Concern

Posted: April 13, 2012, 3:45 p.m. EDT

Virbac Animal Health voluntarily recalled one lot of its canine heartworm and internal parasite preventive Iverhart Max Chewable Tablets (ivermectin, pyrantel pamoate, praziquantel) because the ivermectin failed to meet the company’s stability specifications.

Some 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 said.

heartworm
Virbac is recalling one lot of its canine heartworm preventative Iverhart Max Chewable Tablets.
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 said.

 

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Iverhart Max Lot Recalled on Efficacy Concern

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Reader Comments
I'm horrified to learn about this recall just now. We lost a wonderful male Doberman at about 9 years of age after faithful dosing and yesterday, we discovered our female is affected by heartworms while on this medicine. I'm absolutely sick about this. How did I just now learn this?
Robin, Savoy, TX
Posted: 2/27/2014 8:28:17 AM
My dog was on this medicine and I didn't know anything about the recall. My dog has now tested positive for heartworm!!
Tonya, Barling, AR
Posted: 7/24/2013 11:14:57 AM
Shouldnt we contact clients to ensure that they get blood tests? I am concerned that a reactive approach is not the right one? Anyone else have a concern?
Sandra, Phoenix, AZ
Posted: 4/30/2013 11:39:57 AM
It was a wise move. I just hope Virbac made a sincere effort to test and not a random, minimal one. Their recall is commendable.
Melinda, Virginia Beach, VA
Posted: 4/28/2012 7:16:17 AM
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