• Now safe for cats 4 months and older*

    3 days of postoperative pain relief, just where it’s needed

    * Use in cats ≥ 5.5 lbs (2.5 kg) and ≥ 4 months of age.

    Gray cat
  • Remedy for Relief

    We asked. Veterinarians confirmed.

    Onsior® (robenacoxib) makes the grade for veterinarians, pet owners, and patients!

    Gray cat with butterfly
  • Relief. Just where it’s needed.

    Finally! 3 days of postoperative pain relief for cats.

    *Use in cats ≥ 5.5 lbs (2.5 kg) and ≥ 4 months of age.

    Download Onsior PI

    Orange cat

Effective pain management is an essential component of companion animal medicine. It reduces disease morbidity, facilitates recovery, enhances quality of life, and solidifies the relationship between the veterinarian, client and pet.”

Epstein, et al. ISFM and AAFP consensus guidelines: 2015 AAHA/AAFP Pain Management Guidelines for Dogs and Cats. J Feline Med Surg. 2015 Mar;17(3):251-72. doi: 10.1177/1098612X15572062.

Why choose Onsior® (robenacoxib)?

  • Demonstrated efficacy

  • 3-day use

  • Small, yeast-flavored tablets

  • Convenient for vets & owners

Cat diagram

What is tissue selectivity?

Onsior (robenacoxib) is the only veterinary NSAID both highly COX-2 selective and tissue selective (as demonstrated in a tissue cage model); clinical significance unknown.

Onsior safety

Onsior is supported by a field study and safety studies.

Onsior Box

Packaging and dosing

Onsior tablets are specially formulated for cats.

Important Safety Information
Onsior® (robenacoxib) tablets should not be used in cats that have a hypersensitivity to robenacoxib or known intolerance to NSAIDs. Do not administer ONSIOR tablets in conjunction with any other oral or injectable NSAID or corticosteroid. Owners should be advised to observe for signs of potential drug toxicity. The most commonly reported adverse reactions are surgical site bleeding, infected surgery sites, lethargy, vomiting and inappetance. Please see the product insert for full prescribing information