Pet owners and veterinary clinics across the United States are being urged to stop using certain Adequan injection products after testing found glass fibers inside some medication vials, prompting a nationwide recall.
The recall affects selected lots of Adequan Canine Injection and Adequan i.m. Injection, two veterinary medications used for joint-related conditions in dogs and horses. The affected products were distributed nationwide through veterinary providers, wholesalers, distributors, and online pharmacies.
The U.S. Food and Drug Administration (FDA) announced the recall after the manufacturer identified the issue during routine quality testing. No injuries or adverse events linked to the recalled products have been reported, according to the available recall information.
The products involved are injectable treatments normally supplied as clear, colorless to slightly yellow solutions. The presence of foreign material inside an injectable medication raised concerns because the material could enter the body during treatment.
The recall applies to specific production lots only, meaning pet owners and veterinary professionals are advised to check product labels carefully before deciding whether a medication is affected.
FDA Warns About Potential Risks From Contaminated Injectable Products
The FDA stated that consumers should immediately stop using the recalled medications and follow manufacturer instructions for disposal or return. The agency’s warning focuses on the possible risks associated with injecting medication containing foreign particles.
“An intramuscular injectable product containing particulate matter, such as glass fibers, may result in local irritation, swelling, inflammation, injection site pain, infection, or abscesses,” the recall warns.
The affected products are administered through intramuscular injection, which means any particulate contamination could create problems at the injection site or lead to other complications after treatment.
The manufacturer discovered the glass fibers during routine testing procedures designed to evaluate product quality and safety. The company has not reported confirmed cases of harm connected to the recalled lots.
Veterinary clinics that store or administer these medications are being advised to review their inventory and separate any affected products. Pet owners who have received these treatments for their animals are encouraged to contact their veterinarian for guidance.
The recall highlights the role of quality-control checks in veterinary medicine, where injectable treatments require strict manufacturing standards because they are delivered directly into an animal’s body.

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Four Medication Lots Included In The Nationwide Recall
The recall covers two lots of Adequan Canine Injection and two lots of Adequan i.m. Injection intended for horses. The affected dog medication is a 100 mg/mL, 5 mL multi-dose vial, while the horse medication is a 500 mg/5 mL single-dose vial.
The recalled Adequan Canine Injection lots include:
- Lot 3369 — distributed May 22, 2024 — expiration date October 31, 2026.
- Lot 25011 — distributed April 14, 2025 — expiration date December 31, 2027.
The recalled Adequan i.m. Injection horse medication lots include:
- Lot 24416 — distributed May 8, 2025 — expiration date November 30, 2027.
- Lot 25265P — distributed January 22, 2026 — expiration date March 31, 2027.
The recalled products were supplied throughout the United States, increasing the likelihood that some veterinary practices and animal owners may have purchased or received affected inventory.
Checking the lot number printed on the medication packaging is the primary way to determine whether a specific vial is included in the recall.
American Regent Provides Instructions For Replacement And Returns
The recalled medications were manufactured and distributed by American Regent, which is handling requests related to replacement products and credits.
Consumers seeking assistance can contact American Regent customer service at 800-645-1706 or by email at [email protected].
Veterinary professionals and animal owners are advised not to continue using affected vials while waiting for replacement instructions. Any unused recalled medication should be handled according to the company’s recall guidance.
The recall affects only the listed lots, and other Adequan products not included in the announcement are not part of this action.
For pet owners, the warning serves as a reminder to regularly review medication supplies and verify recall notices involving treatments prescribed for animals. Veterinary medications can have strict storage and tracking requirements, making communication between manufacturers, clinics, and consumers a key part of maintaining animal safety.








