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Onsior (robenacoxib) Rx
for Cats, 6mg Tablet
Starting At
$4.43
per tablet
Onsior (robenacoxib) Rx
$4.43
per tablet
In Stock
Free shipping when you buy 14 or with a $59 order
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$4.21
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Usually ships the same weekday before 3pm CT with veterinary approval.
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Requires veterinary authorization.
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Your pet's veterinarian will provide directions for use.
What are Onsior Tablets for Cats and Dogs?
- Onsior is a prescription nonsteroidal antiinflammatory drug (NSAID) used to relieve pain and inflammation.
- The drug in Onsior is Robenacoxib.
Why do cats and dogs use Onsior?
- Onsior is one of the only NSAID medications available to treat pain and inflammation in cats.
- Onsior may also be prescribed for cats and dogs recovering from surgery or soft tissue injury.
What else should I know about Onsior?
- Flavored tablets for easier dosing.
- Effective pain reliever for cats.
- Eases pain due to orthopedic surgery and soft tissue damage.
- Does not contain steroids.
- Onsior 10 mg, 20 mg, and 40 mg tablets for dogs have been discontinued by the manufacturer.
What problems could my dog or cat have with Onsior?
- Onsior tablets for dogs should not be given to cats as the larger milligram tablets will be too hard to dose.
- Giving cats Onsior for more than three days increases the risk of serious side effects.
- Call your veterinarian immediately if you see decreased appetite, vomiting, changes in bowel movements, changing in drinking or urination, changes in behavior, seizures, or jaundice.
How do you use Onsior?
- Give Onsior tablets by mouth as directed by your veterinarian.
- Pregnant women, especially if close to term, should be very careful when handling Onsior.
What is in Onsior?
- The drug in Onsior is Robenacoxib, a nonsteroidal antiinflammatory drug (NSAID) of the coxib class.
- Coxib class NSAIDs inhibit cyclooxygenase, reducing the production of prostaglandins that lead to inflammation.
Will I get what I see in the picture?
- Onsior is a brand name. You will receive the exact brand that you request.
Is it important for my dog or cat to finish all of the Onsior?
- Dogs and cats may use Onsior for different lengths of time. Please consult your veterinarian if you have any questions.
Review Summary
15 total reviews
Rated 4.40 out of 5 stars
0% of respondents would recommend this to a friend
Ratings Distribution
12 5 star reviews
1 4 star reviews
0 3 star reviews
0 2 star reviews
2 1 star reviews
Most Liked Positive Review
Saved my cats life
Honestly, like nsaids in humans, Onsior does carry some risks. However, for my immune-suppressed cat, it's a literal life saver. She often has fever of unknown origin, sometimes as high as 106+. Intravenous fluids, other medications, nothing else touches her fever. Cats can decline very quickly, and with high fever they often will not eat or drink, as is the case with my cat. Onsior is the only medication that breaks her fever, and makes her feel better. She is able to eat and drink until she is strong enough to make it through the episode. Literal life saver for us.
Most Liked Negative Review
not good news
Took my 12 yr. old cat to vet today with swollen left neck. His organs all felt good. He is diabetic & has shots 2x a day. He prescribed the 3 tablet Onsior & Clavamox. He had the first pill @ 11:30 a.m. At 9:30 p.m., he had a violent seizure & I thought I was going to lose him. He finally settled down but has not gotten up & walked yet. He has never had a seizure before..I will call the vet tomorrow but I will not be giving him the other 2 pills. I feel that it is the cause, as it is one of the "adverse" reactions. He is a large, 16 # cat, so hopefully, he will pull through.
Reviews
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Saved my cats life
From Atlanta, GAComments about Onsior (robenacoxib)Honestly, like nsaids in humans, Onsior does carry some risks. However, for my immune-suppressed cat, it's a literal life saver. She often has fever of unknown origin, sometimes as high as 106+. Intravenous fluids, other medications, nothing else touches her fever. Cats can decline very quickly, and with high fever they often will not eat or drink, as is the case with my cat. Onsior is the only medication that breaks her fever, and makes her feel better. She is able to eat and drink until she is strong enough to make it through the episode. Literal life saver for us. -
Excellent site for purchasing medications.
From undisclosedComments about Onsior (robenacoxib)This medication is reasonably priced here. Even though they had to request the prescription from our vet, the delivery time was very fast. -
not good news
From Walnut Shade, Mo.Comments about Onsior (robenacoxib)Took my 12 yr. old cat to vet today with swollen left neck. His organs all felt good. He is diabetic & has shots 2x a day. He prescribed the 3 tablet Onsior & Clavamox. He had the first pill @ 11:30 a.m. At 9:30 p.m., he had a violent seizure & I thought I was going to lose him. He finally settled down but has not gotten up & walked yet. He has never had a seizure before..I will call the vet tomorrow but I will not be giving him the other 2 pills. I feel that it is the cause, as it is one of the "adverse" reactions. He is a large, 16 # cat, so hopefully, he will pull through. -
New cat
From UndisclosedComments about Onsior (robenacoxib)The vet recommended that we try this on my 17 yr. old cat who was howling, lethargic, and losing weight. The vet thought arthritis or other pain might be causing the symptoms. We noticed an improvement almost immediately. His appetite has improved and he is much more alert - following us around and interested in what is going on. -
worked very well
From Richmond, VA, USAComments about Onsior (robenacoxib)I was given this drug for my cat who has a mass along the gum line. The next day there was significant decrease in swelling with no side effects.
Displaying Reviews 11 - 15
Q & A
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How many times a year can you give your cat the 3 day dosage??
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Under the guidance of a veterinarian, Onisor may be used in an extra-label manner (not consistent with manufacturer labeled directions), based on the individual needs of your cat. There is no data to set a maximum number courses prescribed per year. Please consult your veterinarian regarding Onsior as they will have the most comprehensive medical history for your cat.
Verified Answer
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can onisor 6 mg for cats used on my dog, she is same weight?
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Please contact your veterinarian regarding appropriate dosing of this medication in your cat.
Verified Answer
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side effects for onsior robenacoxib for cats?
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The most common side effects noted with Onsior are vomiting, diarrhea, decreased appetite, dark or tarry stools, increased water consumption, and increased urination. If any of these persist or happen multiple times per day, you should stop the medication and contact your veterinarian immediately. This medication is only approved by the FDA in cats for short term use (6 days or less), however if your cat is on this medication long term, they should be regularly monitored for any of these side effects. Thank you, VetRxDirect
Verified Answer
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Is Onsior compatible in diabetic patients? Primarily, Prozinc? Thanks!?
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Robenacoxib (Onsior) is a non-steroidal anti-inflammatory drug (NSAID) used for pain management in cats. Currently there is no data stating that onsior cannot be used in diabetic cats. There is also no known drug interactions between onsior and prozinc insulin. Talk with your veterinarian to determine if Onsior is the best treatment option for your cat. Thank you, VetRxDirect
Verified Answer
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Side effects? After giving first dose, my kitten passed out (fell asleep & doesn't want to wake up like a teenager). Is that normal for her to fall asleep so heavily? I'm assuming just from exhaustion from being in pain, just want to double check. ?
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I would read the package insert with the RX information for side effects. Never take someone's word on a subject because not all cats react the same to a prescription. (The link below is identical to my insert that I received from my vet.) Renal failure is always a risk with pain relievers and cats. But on the brighter side, My cat had an injury and our vet prescribed this for his pain, and it is such a low dose that the weight of my cat was able to handle it. I don't know about a kitten. I do believe it helped with my cats inflammation and pain that he was having, because he did show improvements after taking it. Getting up, moving around more. I would 100% recommend this product for people like me with older animals. My only complaint is that the vet sticker they gave me does not say how long it takes to expire. Its expiration is blank. So I'm hopeful that because they are in sealed foil pill pockets that they would last the normal shelf life of a human medicine. But anyone with an accurate answer feel free to respond. I am very glad to find this same medicine, which works, without the huge vet bill. https://vetrxdirect.naccvp.com/index.php?u=country&p=msds&prodnum=1131031&id=1131031&m=product_basic_view
Community Answer -
Rosey, Onsior (robenacoxib) has the potential for causing lethargy or decreased activity while on the medication. Drowsiness or dizziness is not noted as a potential adverse effect. If the pain has hindered your cat’s ability to fall asleep then this pain-relieving medication may help your pet sleep. If drowsiness or decreased activity persists please follow up with your veterinarian. Thank you, VetRxDirect
Community Answer
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Can a cat die from this drug??
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Pamela, We are sorry to hear about your cat. Onsior is a potent NSAID and is labeled specifically for the relief of pain during and after surgery or other painful procedures, for a maximum of three days. Onsior can cause side effects that could lead to death in a cat. This is usually due to an underlying disease which may or may not have been previously diagnosed by your pet's veterinarian. Take care, VetRxDirect
Community Answer
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