American Regent, Inc. Animal Health is recalling four lots of Adequan injectable products following the detection of glass fibers in internally retained samples. The recall affects two lots of Adequan Canine Injection (100 mg/mL, 5 mL multi-dose vials) for dogs—lots 25011 and 3369—and two lots of Adequan i.m. Injection (500 mg/5 mL, single-dose vials) for horses—lots 24416 and 25265P. According to the company, administration of an injectable product containing particulate matter such as glass fibers may cause local irritation, swelling, inflammation, injection-site pain, infection or abscess formation. No adverse events associated with the recalled lots had been reported at the time of the recall. Adequan Canine is prescribed for the treatment of noninfectious degenerative or traumatic joint dysfunction in dogs, while Adequan i.m. is used in horses for similar joint conditions and associated lameness. Both products are administered intramuscularly by or under the direction of a licensed veterinarian. The recalled products were distributed nationwide in the United States to veterinary practices, distributors, wholesalers and online pharmacies. Adequan Canine lots were distributed in May 2024 and April 2025, while the affected Adequan i.m. lots were distributed in May 2025 and January 2026. Product Description NADA Lot # Distribution Date Expiration Date AdequanCanine Injection,100 mg/1 mL 5 mL multi-dose vial 141-038 3369 05/22/2024 10/31/2026 AdequanCanine Injection,100 mg/1 mL 5 mL multi-dose vial 141-038 25011 04/14/2025 12/31/2027 Adequan i.m. Injection,500 mg/5 mL 5mL single-dose vial 140-901 24416 05/08/2025 11/30/2027 Adequan i.m. Injection,500 mg/5 mL 5mL single-dose vial 140-901 25265P 01/22/2026 03/31/2027 Veterinary professionals should verify product lot numbers and follow recall instructions before administering affected products. For more information, check out the U.S. Food and Drug Administration (FDA) announcement.