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Onsior Cat

Please note: a valid prescription is required for all prescription medication.

Price:

Price range: $40.99 through $73.99

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Onsior for Cats is a prescription non-steroidal anti-inflammatory drug (NSAID) used to relieve pain and inflammation in cats, especially after surgery such as spaying, neutering, or orthopedic procedures. It contains robenacoxib, which provides fast, targeted pain relief with a short duration in the body—making it suitable for short-term use.

Benefits

  • All ProductsProvides effective relief from post-operative pain and inflammation
  • Fast-acting, typically working within hours
  • Specifically formulated and flavored for cats
  • Once-daily dosing for convenience
  • Helps your cat recover more comfortably and move more easily

Dosage

  • For cats weighing 2.5 kg or more and 4 months of age or older
  • The recommended dose is 1 mg/kg once daily, using the 6 mg tablet
  • Administer once daily for up to 3 days, starting just before or right after surgery
  • Tablets should be given by mouth, with or without food
  • Do not split or crush the tablet
  • Only use as directed by your veterinarian

Warnings and Precautions

  • Not for use in cats under 2.5 kg or younger than 4 months
  • Not for long-term use or for chronic conditions
  • Do not use with other NSAIDs or corticosteroids
  • Use with caution in cats with kidney, liver, heart, or gastrointestinal issues
  • Not recommended for pregnant, nursing, or breeding cats
  • Tell your vet about any other medications or supplements your cat is taking

How to Use

  • Give the full tablet by mouth once per day
  • Can be given with or without food, but try to stay consistent
  • Ensure your cat has access to fresh water
  • Observe your cat for any side effects during treatment
  • Do not exceed the recommended duration unless advised by your vet

Storage

  • Store at room temperature (15–30°C / 59–86°F)
  • Keep in original blister packaging until use
  • Keep out of reach of children and pets

Side Effects

  • Common: vomiting, soft stools, decreased appetite
  • Possible: tiredness, behavioral changes, increased thirst
  • Serious (contact vet immediately): black or bloody stools, yellowing of eyes or gums, allergic reactions (swelling, itching, breathing difficulty)

Express Shipping - from $25.00

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Prices:
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  • Cold-Packed Products $35.00
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  • Worldwide (excludes some countries***)

Standard Shipping - $15.00

Shipping with this method takes 5-10 days

Prices:
  • Dry-Packed Products $15.00
  • Not available for Cold-Packed products
Shipping Countries:
  • United States (all contiguous states**)
  • Worldwide (excludes some countries***)

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