Onsior® Tablets for Cats

Onsior is a nonsteroidal anti-inflammatory medicine for cats used to control postoperative pain and inflammation. This page explains how it works, who it suits, and how to order. It also outlines US delivery from Canada and options if paying without insurance.

What Onsior Is and How It Works

Onsior® contains robenacoxib, a COX-2 selective NSAID for cats. It helps reduce pain and swelling after orthopedic and soft tissue surgery. This medicine targets prostaglandins that drive inflammation while sparing COX-1 to a degree.

CanadianInsulin.com is a prescription referral platform. We verify prescriptions with your prescriber when required, and licensed Canadian pharmacies dispense your order.

The treatment is intended for short courses as directed by your veterinarian. It is not a chronic arthritis therapy for cats. Use only under veterinary supervision and follow the approved label.

For a plain-language overview of indications and key considerations, see What Is Onsior Cat Medicine Used For.

Who It’s For

This class is approved for cats undergoing orthopedic or soft tissue surgery. Healthy adults and seniors may be candidates when a veterinarian considers benefits and risks. It is not for dogs or for other species.

Cats with active ulcers, intestinal bleeding, severe kidney or liver disease, or dehydration should avoid use. Do not use in breeding, pregnant, or lactating cats unless the prescriber advises otherwise. Do not give to kittens below the label age or weight limits. Tell the veterinarian about all illnesses and all medicines your cat takes.

For a broader overview of joint disease across species, see Understanding Arthritis In Dogs And Cats.

Dosage and Usage

Follow your veterinarian’s instructions. Dosing is based on body weight and the timing of surgery. Give the tablet once daily for a short, defined period after the procedure. Administer around the same time each day.

Offer a small amount of food or give on an empty stomach as directed on the label. Have fresh water available. Do not split, crush, or chew the tablet. If your cat vomits persistently or refuses food, contact the clinic before another dose.

Strengths and Forms

Availability can vary by pharmacy and by country. Common presentations include:

• Onsior 6 mg tablets for cats.
• Blistered packs in small counts for short perioperative courses.
• Injectable solution used by veterinarians in clinic settings.

Missed Dose and Timing

If a dose is missed, give it when remembered unless it is close to the next scheduled time. If it is near the next dose, skip the missed dose. Do not double up. Because courses are short, call the veterinarian if timing issues occur on a surgery day.

Storage and Travel Basics

Store tablets in the original blister until use. Keep them in a dry place at room temperature, away from moisture and direct light. Keep out of reach of children and other animals. Do not use tablets that are damaged or expired.

When traveling, carry the labeled package and a copy of the prescription. Pack the medicine in your hand luggage if flying. You can show the label at security if needed. Plan ahead so you have enough tablets for the prescribed course.

Benefits

This therapy provides targeted pain control around surgical procedures. Once-daily dosing is convenient for home administration. Short courses limit exposure compared with long-term NSAID use. Small tablet size can aid acceptance in many cats. The treatment can be combined with non-NSAID analgesics as directed by the veterinarian.

Side Effects and Safety

Common side effects are usually mild and transient. Report problems promptly if they persist or worsen. Known effects can include:

• Vomiting or regurgitation
• Diarrhea or soft stools
• Decreased appetite
• Lethargy
• Injection-site events if given in clinic

Serious risks are uncommon but can occur with any NSAID. Stop the medicine and contact the veterinarian immediately for black or bloody stools, repeated vomiting, severe lethargy, jaundice, facial swelling, breathing trouble, seizures, or reduced urine output. Risk may be higher in cats with preexisting renal, hepatic, gastrointestinal, or bleeding disorders. Dehydration can increase the chance of kidney problems.

Drug Interactions and Cautions

Avoid using this NSAID with another NSAID or with corticosteroids. Combining similar medicines increases gastrointestinal and renal risks. Use caution with anticoagulants, certain blood-pressure medicines, and diuretics. Tell the prescriber about any supplements, flea and tick products, or recent injections. Your veterinarian may recommend baseline labs in higher-risk cats or when other therapies are needed.

What to Expect Over Time

Pain relief typically begins soon after dosing on the day of surgery. The course is brief and focused on the operative period. Some cats may need additional non-NSAID analgesics during recovery. Appetite, activity, and comfort should trend toward normal as healing progresses. If pain seems uncontrolled, or adverse effects appear, contact the clinic to reassess the plan.

Compare With Alternatives

Veterinarians may consider other options when this tablet is unsuitable. A liquid meloxicam option for cats is available as Metacam Oral Suspension For Cats. In some cases, an injectable form of the same class is used in clinic, such as Onsior Solution. Your veterinarian will choose the analgesic plan that best fits your cat’s health status and procedure.

Pricing and Access

CanadianInsulin lists current pricing and pack options for this medicine. View detailed information to compare course lengths and dispensing pharmacies. We provide Canadian pricing with fulfilment that Ships from Canada to US. You can review Onsior 6 mg for cats cost considerations by pack size and see how pharmacy choices affect final totals. Checkout is encrypted. For potential coupons and seasonal offers, see Promotions. You can also browse related items in Pet Medications.

Availability and Substitutions

Supply can vary by pack size and pharmacy. If a specific pack is not available, your veterinarian may recommend a suitable alternative or adjust the postoperative plan. Do not substitute another NSAID unless your prescriber directs the change.

Patient Suitability and Cost-Saving Tips

This therapy suits cats that need short-term pain control around surgery and can swallow tablets reliably. It may not suit cats with significant kidney, liver, gastrointestinal, or clotting disease. It is not for long-term daily use in feline arthritis.

• Plan ahead for scheduled procedures so you can order in time.
• Upload the prescription promptly to avoid delays in processing.
• Ask the clinic to note the full course on the script when appropriate.
• Set a reminder on your phone for the daily dose time.
• Keep a small treat ready to help your cat accept the tablet.
• Contact the veterinarian before adding any other pain medicine.

Questions to Ask Your Clinician

• What dose, schedule, and duration are right for my cat?
• Should I give the tablet with food or on an empty stomach?
• What specific side effects should I watch for during recovery?
• Do any of my cat’s current medicines interact with this NSAID?
• What should I do if vomiting occurs after a dose?
• How long should I continue therapy after surgery?
• Are blood tests recommended before or after the course?
• What is the plan if additional pain control is needed?

Authoritative Sources

Elanco Manufacturer PageFDA Animal Drugs DatabaseHealth Canada Drug Product Database

Ready to proceed? Start your order with CanadianInsulin for your cat’s postoperative pain plan. We offer US shipping from Canada with prompt, express delivery and temperature-controlled handling when required.

This information is not a substitute for veterinary advice. Always follow your veterinarian’s directions and the approved label.