• Injection is here!

    New convinient formulation. Trusted postoperative pain relief.

    * Use in cats ≥ 4 months of age. Use for a maximum of up to 3 days.

    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 both COX-2 selective and tissue selective (as demonstrated in a tissue cage model1); 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, and are
safe to use interchangeably
with injection.

1.Pelligand, L., et al. Pharmacokinetic/pharmacodynamic modelling of robenacoxib in a feline tissue cage model of inflammation. Journal of Veterinary Pharmacology and Therapeutics, 35, 19-32. doi:
10. 1111/j. 1365-2885.2011.01288.x

Important Safety Information
Onsior® (robenacoxib) injection or tablets should not be used in cats that have a hypersensitivity to robenacoxib or known intolerance to NSAIDs.
All cats should undergo a thorough history and physical examination before the initiation of NSAID therapy. Do not administer Onsior in conjunction
with any other oral or injectable NSAID or corticosteroid. Owners should be advised to observe for signs of potential drug toxicity.

Onsior injection is for subcutaneous use in cats only. The most common adverse reactions in clinical studies for Onsior injection were incision site bleeding, incision site infection, vomiting, lethargy, anorexia. Please see the product insert for full prescribing information.

The most common adverse events based post approval experience for Onsior tablets are anorexia, depression/lethargy, vomiting, elevated BUN, elevated creatinine, renal insufficiency/ faliure, and diarrhea. Please see the product insert for full prescribing information.