Onsior (robenacoxib) Tablets for Cats

By Onsior
Rated 4.8649 out of 5 stars
Prescription Item
$11.35Chewy Price
$10.78Autoship Price
(Save an extra 5%)

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FREE delivery on first-time orders over $35
Usually arrives in 3-5 days
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Medications ship separately. Delivery times may vary.

About This Item


Onsior tablets are a prescription non-narcotic, nonsteroidal anti-inflammatory (NSAID) medication that helps control postoperative pain and inflammation associated with declawing, spaying, and neutering in pets 5.5 pounds or more and four months of age or older, for a maximum of three days.

Proudly sourced directly from the manufacturer or their approved distributor. Guaranteed genuine and backed by the manufacturer.

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Play Video: Learn More About Onsior From Our Team of Experts
Learn More About Onsior From Our Team of Experts

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Total Price: $67.94

ReviewsWrite a Review

Rated 4.8649 out of 5 stars
37 Ratings
Would recommend to a friend

36 Customer Reviews

Always consult a veterinarian about your pet’s health needs. Customer reviews should not be used as medical advice.
Rated 5 out of 5 stars
By MarshsMeowmmy on Aug 21, 2023

My Baby Can Play

I have had two kitties on this med prior to this current kitty and did not hesitate to ask for this medicine in lieu of a sedating pain med for his chronic pain. None of the past two or my current baby has had any sedation whatsoever. Actually, I do not think I have ever noticed any side effects. Marsh does so well that he sometimes plays a little too hard and forgets that he might get sore later which I have to be the mean one and stop him because he is not good at regulating that. But seriously, that is how well this works on pain. All three cats were on it for very different reasons. I am not sure what all pain it covers but it did wonders for all of them when everything else sedated them. And truly - - what a savings at Chewy!

Rated 5 out of 5 stars
By Rose on Nov 10, 2023

pharmacy order

So glad we can order from you directly. Great customer service, delivery and price.

Rated 5 out of 5 stars
By Cathy on Jun 28, 2023


Thank goodness we can get this Prescription from Chewy, the cost @vet crazy! We have 5 cats and one the like to play a bit ruff, and one cat with Arthritis, this takes care of and Inflammation and pain

Rated 5 out of 5 stars
By TabbycatMom on Apr 23, 2023

A medicine that cats take readily

This was prescribed for both of my cats for inflammatory conditions. It seems to ease their discomfort, and the best part is that they will eat it from their bowls with no coaxing needed!

Rated 5 out of 5 stars
By Shadow on Jun 26, 2022

Our Cat Shadow is a new boy

Our big kitty is 16 and has a torn CCL and we have been giving this every other day as he heals. It has been very good at managing pain and helping him get around

Rated 5 out of 5 stars
By MaxandJackMom on Feb 14, 2022

Necessity for my Cat

This medication gives my cat the mobility he needs to function since he has degenerative joint disease at the age of 5! (thanks to the dominant Scottish fold/Manx gene he carries) With his veterinarians care he needs it every other day for the rest of his life and Chewy makes it affordable for me. Onsior is literally giving my cat a quality of life. Thank you Onsior and thank you Chewy!

Rated 4 out of 5 stars
By Gigi on Jan 4, 2022

Onsior tablets

The combination of this medication, fluids every 48 hours and prescription urinary food saved my cat. She had a calcium oxalate stone trapped in her Urethra for a period of 3 months. On this regimen her bladder is now clearing. My only complaint is the price. If the malady continues in my cat she’ll have to be on this for a long period of time, possibly life and that could get unaffordable. However, I am grateful these meds are available from Chewy and my kitty Butterscotch is doing much better now.

Rated 5 out of 5 stars
By Tonya on Oct 11, 2021

Effective medication for my cat’s urinary tract inflammation

This medicine purchased from Chewy is 1/3 of the cost at my veterinarian’s office. I love my veterinarian and they take excellent care of my cat, but I treating her chronic condition is costly and it helps to save a little money where possible. I also purchase her prescription urinary wet food, Cosiquin supplements, and Felway calming pheromones from Chewy. And the kitty litter for the multiple litter boxes that must be frequently changed. Having all this arrive via auto shipments makes my life easier.

Rated 5 out of 5 stars
By Bonn on Jun 14, 2021

Works Wonders

My geriatric cat has arthritis and kidney disease, so it was hard to find him an NSAID that’s safer for his kidneys but Onsior does the trick! His bloodwork still looks good after taking it. I can tell from the way he walks and jumps on and off of furniture that he feels much more comfortable.

Rated 5 out of 5 stars
By Yeppp on Oct 19, 2021

wonderful price

My kitty has bladder cancer and this has been helping him feel a lot better