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Recall issued for six lots of Iverhart Plus chewable heartworm tablets

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Just as the insect-borne disease season gets underway here in the Chicago area, news of a heartworm medication recall has surfaced as well. The American Veterinary Medical Association reported a drug recall this week. On 4/10/13, six lots of Iverhart Plus Flavored Chewables, a heartworm preventive, were recalled by manufacturer Virbac Animal Health of Fort Worth, Texas, because the medication’s active ingredient, ivermectin, failed to meet stability specifications in testing, Insufficient stability can reduce medication efficacy before the printed expiration date.

Iverhart Plus, a generic equivalent to Merial Ltd.’s Heartgard Plus, is used to prevent heartworm disease and for the treatment and control of roundworms and hookworms. Iverhart Plus Chewable tablets are packaged in a foil-backed blister card.

The recall involves these six lot numbers:
• For large dogs (51 to 100 pounds): lots 120076, 120086 and 120856.
• For medium dogs (26 to 50 pounds): lot 120202.
• For small dogs (up to 25 pounds): lots 120196 and 120844.

Stability concerns led had also led Virbac to recall a single lot of Iverhart MaxChewable Tablets (ivermectin, pyrantel pamoate, praziquantel) just a year ago, in April 2012.

Veterinarians or pet owners who have questions regarding recalled products may contact Virbac Technical Services at 800-338-3659, ext. 3052.

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