Skip header
Free Shipping Over $49
Live Customer Care
Monday-Friday: 8AM - 7PM EST
Saturday: 9AM - 5PM EST
My ProfileMy OrdersMy AutoShipMy RxMy PetsMy VetsMy RewardsSign In
Save Up To 10% On Your First AutoShip

Onsior for Cats, 6 mg 3 tablets Rx

4.50 out of 5 stars
This Item Ships FREE!
Save 5% on your 1st AutoShip order and 5% on all future AutoShip orders

Please confirm

This item is already on your autoship schedule! Are you sure you want to add it again?

Product Overview

How To Use

What’s in it?


Questions & Answers

Product Description

Onsior for Cats (Robenacoxib) is an NSAID medication (non-steroidal anti-inflammatory drug) that works to relieve pain and reduce inflammation caused by soft tissue or orthopedic surgery. It only requires one daily dose a period of 3 days or less.

Who is Onsior for Cats, 6 mg 3 tablets for?

For use in cats.

Why use Onsior for Cats, 6 mg 3 tablets?

Features of Onsior:
  • Tasty tablets with a yeast flavor are readily accepted by the majority of cats
  • Works to relieve pain caused by soft tissue or orthopedic surgeries
  • One daily dose alleviates pain quickly for a 24-hour period

How does Onsior for Cats, 6 mg 3 tablets work?

Onsoir uses a non-steroidal anti-inflammatory drug called robenacoxib. This ingredient works to target the pain-causing COX-2 enzyme. It does not affect the COX-1 enzyme, which protects the blood platelet function and the gastrointestinal tract. These tablets are absorbed quickly from the GI tract, and they provide 24 hours of relief.



Active ingredient(s):

Robenacoxib 6 mg

How is Onsior for Cats, 6 mg 3 tablets sold?

Three 6 mg tablets.

What are the side effects of Onsior for Cats, 6 mg 3 tablets?

If your cat exhibits any of the following side effects, which could indicate a serious problem, notify your veterinarian:
  • Unusual bleeding or bruising
  • Eye yellowing
  • Itching
  • Skin rash
  • Lethargy or fatigue
  • Water retention
  • Unexplained weight gain
  • Vomit with blood
  • Tarry, bloody, or black stools
  • Appetite changes
  • Abdominal discomfort, tenderness, or pain
If you notice any of these symptoms of an allergic reaction, withdraw use and seek immediate veterinary attention:
  • Hives
  • Swollen face
  • Swollen tongue
  • Swollen lips
  • Difficulty breathing
Other reactions can also occur. Note and discuss any unusual side effects with your veterinarian.

What special precautions are there?

  • Do not administer with corticosteroid or other NSAID drugs.
  • Exceeding the treatment duration or dose can cause a life-threatening, serious reaction.
  • Only for pain treatment in cats.
  • Do not use for over three days.

What to do if overdose?

Contact your closest emergency pet hospital.

How can I store Onsior for Cats, 6 mg 3 tablets?

Store in a dry and cool environment.

Helpful Tips:

Onsior can be administered on its own, or for convenience, it may be administered with a little bit of food.

Pharmacists are standing by to offer Pet Parent counseling regarding prescription medication purchased from Allivet before and after dispensing. Pharmacists on duty are available Monday-Friday, 9:30AM - 5:30PM EST and will be on call Saturday 12:00PM - 4:00PM EST for consultation.


Dosing schedule:
• The recommended dose is 1 mg/kg body weight.
• Administer once a day at the same time of day for up to 3 days.
• For oral use only. Do not divide or administer with other pain relievers.
Cat Weight:
5.5 - 13.3 lbs        1-6 mg tablet daily
13.3 - 26.4 lbs      2-6 mg tablet daily

Main Ingredients

Robenacoxib 6 mg

Write a Review

Onsior for Cats, 6 mg 3 tablets

Customer Submitted Questions

number of actual pills in a 3pk of onsior 6mg

1 Answer
Ask a New Question

Don’t know something or can’t find the information you are looking for? Ask us a question!

*Required Fields
We will ONLY use your email to notify you in regards to your submission.Privacy StatementQuestions & answers are typically posted within 24 hours, pending approval.