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American Regent Recalls Adequan Joint Injections for Dogs and Horses Over Glass Fibers

Glass fibers turned up in retained samples of the widely used joint medication; no injuries reported so far.

By THRYV Life Desk·Published August 26, 2026·Updated August 26, 2026·4 min read
American Regent Recalls Adequan Joint Injections for Dogs and Horses Over Glass Fibers
Pets · Illustration commissioned for THRYV. Photography is replaced with original imagery as each story is produced.

The takeaway

American Regent has recalled specific lots of its Adequan Canine and Adequan i.m. injections after finding glass fibers in retained product samples. The joint medication, widely used in dogs and horses, was distributed nationwide through veterinary practices, online pharmacies and wholesalers. No injuries have been reported, but particulate matter in injectable products can cause site pain, swelling or infection.

American Regent Animal Health has recalled select lots of Adequan Canine Injection and Adequan i.m. Injection, two widely used joint medications for dogs and horses, after discovering glass fibers in retained product samples during routine testing.

Which lots are affected

  • Adequan Canine Injection (100 mg/mL, 5 mL multidose vials), lots 3369 and 25011
  • Adequan i.m. Injection (500 mg/5 mL, single-dose vials), lots 24416 and 25265P
  • Distribution dates for the affected lots ranged from May 2024 through January 2026

What went wrong

American Regent says the glass fibers were found during company testing of retained samples, not through a reported adverse event. The affected products reached veterinary practices, online pharmacies, distributors and wholesalers nationwide. The recall was carried out with the FDA's knowledge.

Risk to pets

The company warns that injecting a product containing particulate matter such as glass fibers may cause injection-site pain, local irritation, swelling, inflammation, infection or abscess formation. As of the announcement, no injuries in dogs or horses had been reported.

What pet owners and vets should do

  • Check the lot number printed on any Adequan Canine or Adequan i.m. vial on hand against the affected lots
  • Do not administer product from a matching lot; set it aside and contact your veterinary supplier
  • Veterinarians should quarantine affected stock and follow return instructions from American Regent
  • Report any adverse reactions to your veterinarian and to the FDA

Sources

This article is original writing by THRYV. We link to primary reporting and official documents rather than reproducing them.

  1. Adequan Injection Recall: Key Facts — dvm360
  2. Nationwide recall issued for dog, horse medications after glass fibers found in vials — FOX 4 Dallas-Fort Worth

Why you can trust this article

Written and edited in-house by the THRYV Life Desk. We do not republish or reword agency copy, and we do not invent quotes, statistics, testimonials or ratings. Where figures move frequently, we point you to the primary release rather than printing a number that will be out of date. Advertising and affiliate partnerships have no influence on our reporting — see our editorial standards, fact-checking policy and affiliate disclosure. Spotted an error? Write to newsroom@thryv-news.com.

General information only. Not personalised financial, medical or legal advice.

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