Onsior for cats
Onsior is a drug used in veterinary practice to relieve inflammation and pain in cats. It is absorbed in the gastrointestinal tract and then enters the systemic circulation.
Content
Compound
This medication belongs to the coxib class of nonsteroidal anti-inflammatory drugs (NSAIDs). Its main active ingredient is robenacoxib. Other excipients include magnesium stearate, yeast, povidone, crospovidone, and others.
Release forms
The drug is available in two forms:
- round tablets, brown or beige in color, in blisters of 6 pieces;
- injection solution.

Indications and contraindications
Indications for the use of Onsior in cats:
- dislocations and wounds;
- inflammation in soft tissues;
- joint diseases (arthrosis or arthritis in cats).
The drug can also be used as a premedication before surgery (approximately half an hour before the administration of the narcotic substance).
Onsior is strictly contraindicated for use in pregnant and lactating cats. Other contraindications:
- chronic diseases of the liver, kidneys and heart;
- a state of severe dehydration;
- age (kittens under 4 months);
- individual intolerance or hypersensitivity to the components of the drug;
- The animal's weight is less than two and a half kilograms.
Side effects
If you follow the dosage recommended by your veterinarian, side effects are usually not observed.
An overdose of the medication may cause the following unpleasant consequences:
- vomit;
- problems with stool;
- symptoms of kidney failure;
- symptoms of liver failure.
Typically, these symptoms resolve on their own and don't require additional medication. If your cat is allergic to Onsior, your vet will prescribe antihistamines.

Instructions for use
It's best to administer the medication separately from feeding. If this isn't possible, add it to the food. The recommended dosage is 1 tablet per day for a weight of 2.5 to 6 kg, and 2 tablets per day for a weight of 6 to 12 kg.
For acute pain, the medication is administered once or twice daily. For joint conditions, Onsior can be taken for 7 days.
When performing surgery, the medication is administered at a dose of 1-2 mg per kilogram of the cat's body weight.
Compatibility with other drugs
Onsior should not be used concurrently with certain other medications. These include:
- ACE inhibitors;
- diuretics;
- nonsteroidal anti-inflammatory drugs.
All of the above medications can increase the toxic effects of Onsior.
How to store
Tablets should be stored in a cool, dry place, protected from ultraviolet rays. The recommended temperature range is 0-25 degrees Celsius.
About precautionary measures
When using this medication, certain safety precautions must be observed. If Onsior accidentally comes into contact with skin or mucous membranes, rinse immediately with water. Empty medication containers are strictly prohibited from being used for household purposes.
Price
Onsior is available in pharmacies in Moscow, St. Petersburg, and other cities. A six-pack of 6 mg tablets costs 550-600 rubles, and a 20 ml vial of injection solution costs 2,200-2,400 rubles.

Owner reviews
Natalia Sergeeva:
"My cat fell out of a second-story window at our dacha. As a result, her hind leg was injured, and she started limping. I took her to the veterinarian for a checkup. The specialist diagnosed a dislocation and recommended giving her Onsior for two or three days to reduce pain and inflammation. I bought the medication at the pharmacy and gave her one tablet a day for three days straight. I didn't notice any side effects from this medication."
Maria Nesterenko:
"My cat is many years old, and she recently started suffering from hip osteoarthritis. At a routine veterinary appointment, the doctor recommended giving her Onsior for severe pain. Since then, I've been using it occasionally if she starts to feel discomfort and becomes very restless. But this is only a supportive measure that helps quickly relieve the pain. Our primary treatment is different. The specialist warned that the medication shouldn't be used on a regular basis due to the risk of side effects."
Veterinarian Reviews
Victoria Antipenko:
"I've been using Onsior in my work for a long time. It's effective for relieving pain from dislocations and musculoskeletal disorders in cats. The medication works quickly and effectively. It can also be used as premedication before surgery. However, it needs to be prescribed with caution, as there are a number of contraindications."
Vladimir Pirogov:
"In my veterinary practice, I often prescribe Onsior to cats with chronic joint diseases or injuries. It effectively relieves pain and reduces inflammation. However, it should be noted that sometimes animals develop an intolerance to the drug's components. In such cases, I discontinue the medication and replace it with other alternatives."
Read also:
- Gabapentin, an anticonvulsant drug for cats
- Pain relievers for cats
- Seizures in cats: causes and treatment
Add a comment