Onsior Cat (robenacoxib) Tablets

Onsior Cat is a prescription NSAID (nonsteroidal anti-inflammatory drug) containing robenacoxib to help manage pain and inflammation in cats under veterinary direction. BorderFreeHealth helps coordinate access through licensed Canadian partner pharmacies with prescription verification, and Ships from Canada to US. This page explains what the medication does, how it’s commonly used, and what to know about safety, storage, and access, including cash-pay options without insurance.

What Onsior Cat Is and How It Works

Robenacoxib is a veterinary NSAID used to reduce inflammation and relieve pain by lowering prostaglandins (chemical messengers involved in swelling and discomfort). It is often described as relatively COX-2 selective (cyclooxygenase-2 selective), which means it is designed to target pathways tied to inflammation more than those that help protect the stomach and kidneys. Even with that design, any NSAID can still affect the gastrointestinal tract and kidney blood flow in some cats, especially when other risk factors are present.

Prescriptions are confirmed with the prescriber before dispensing. A practical way to think about this therapy is “short-term control of pain and inflammation” when a veterinarian decides an NSAID is appropriate for a cat’s overall health status. For background on how robenacoxib fits into comfort and mobility planning, the guide Onsior Cat Medicine Guide offers additional context to discuss with a clinic.

Who It’s For

Onsior Cat may be prescribed for cats that need NSAID-based pain control, commonly around procedures or other situations where inflammation is a key driver of discomfort. The exact indication and duration depend on local labeling, the cat’s medical history, and the prescriber’s judgment. Some regions’ references discuss use in chronic joint disease, but whether that is appropriate can vary, and decisions should follow the veterinarian’s plan and the official label for the product supplied.

This medicine is not appropriate for every cat. NSAIDs are generally avoided or used with extra caution in cats with a history of stomach or intestinal ulceration, bleeding disorders, significant kidney or liver disease, dehydration, or very low blood pressure. Cats taking certain other medicines may also need a different approach. For help recognizing discomfort that warrants a veterinary call, see Signs A Cat Is In Pain. Related browseable hubs include Pain Collection and Inflammation Collection, and the broader Pet Medications Category for other prescription options a clinic might consider.

Dosage and Usage

Onsior Cat dosing is determined by a veterinarian and is typically based on the cat’s body weight and the reason for treatment. Many NSAIDs in cats are used once daily, but the prescribed schedule and total length of therapy should be followed exactly, because cats can be more sensitive to NSAID effects than some other species. Tablets should be given only as directed on the prescription label; do not change the dose, frequency, or duration without veterinary instructions.

If a dose is missed, the safest step is to contact the prescribing clinic for guidance rather than “doubling up.” If vomiting, marked appetite loss, black/tarry stools, sudden lethargy, or reduced drinking occurs while on an NSAID, the prescriber should be contacted promptly, because these can be warning signs of intolerance or complications.

Giving a Tablet to a Cat

Some cats accept tablets best when offered calmly and consistently. Options that a clinic may suggest include placing the tablet at the back of the tongue followed by a small amount of water or food, using a pill-giver device, or hiding the dose in a small portion of a veterinarian-approved treat. If the product label includes specific instructions about giving with food, follow that guidance because absorption can vary among medications.

Quick tip: Keep a simple dose log (date/time) to reduce accidental extra doses.

Because robenacoxib is a prescription therapy, any questions about split tablets, compounding, or using a different formulation should be directed to the veterinarian so the plan stays consistent with the intended exposure and monitoring needs.

Strengths and Forms

Onsior Cat is commonly supplied as 6 mg tablets for cats. Presentation can include blister packs or bottles depending on the source and market, and the appearance may vary by manufacturer or packaging updates. A veterinarian will specify the strength and number of tablets needed based on the prescribed regimen, so the dispensed quantity may differ from one cat to another.

Robenacoxib can also appear in other dosage forms in some settings (for example, a solution or injectable product). Those forms are not interchangeable without a prescriber’s direction, because the intended use, dosing approach, and administration route can differ. Availability may vary across partner pharmacies and across time.

Storage and Travel Basics

Store tablets at controlled room temperature, in the original packaging, and protected from moisture and direct light, unless the label states otherwise. Keep this medication out of reach of children and animals, and avoid transferring doses into unmarked containers because mix-ups are common when multiple pet medicines are being used at once.

For travel, carry the medicine in its labeled packaging so the drug name, strength, and prescription details remain available if care is needed away from home. Try to avoid leaving tablets in hot cars, near heaters, or in very humid environments like bathrooms. If tablets look crumbled, discolored, or have an unusual odor, a pharmacist or clinic can advise whether replacement is needed.

Side Effects and Safety

While many cats tolerate Onsior Cat, side effects can occur. The more common reactions reported with NSAIDs include vomiting, diarrhea, reduced appetite, and lethargy. These issues may be mild, but they can also be early signs of gastrointestinal irritation. More serious problems—such as stomach or intestinal ulceration/bleeding, kidney injury, or liver-related effects—are less common but require urgent veterinary attention if suspected.

Why it matters: Early recognition can help prevent dehydration and worsening kidney strain.

Dispensed through licensed Canadian partner pharmacies. Risk tends to be higher in cats that are dehydrated, elderly, already have kidney disease, or are taking other medicines that affect hydration or blood pressure. A veterinarian may recommend baseline or follow-up bloodwork for higher-risk cats, especially if any appetite, drinking, or urination changes appear. If signs like black stools, repeated vomiting, pale gums, collapse, or facial swelling occur, emergency care is appropriate.

Drug Interactions and Cautions

NSAIDs should generally not be combined with other NSAIDs or corticosteroids (such as prednisone), because the overlap can raise the chance of ulceration or kidney complications. Caution is also warranted with medicines that affect the kidneys or blood pressure (for example, certain diuretics, ACE inhibitors, or other drugs a veterinarian may use for heart or kidney conditions). Always provide the clinic a complete, current list of prescription drugs, supplements, and flea/tick products so interaction risk can be reviewed.

Extra care is also needed around anesthesia, fluid balance, and acute illness. A cat that is vomiting, has diarrhea, is not eating, or seems dehydrated may need a pause and reassessment rather than continued NSAID dosing. If any other anti-inflammatory or pain medicine is being considered, the prescriber can outline washout timing and monitoring steps to reduce additive risk.

Compare With Alternatives

When discussing options beyond Onsior Cat, veterinarians often weigh the expected benefit against safety factors such as hydration status, kidney function, prior gastrointestinal sensitivity, and the need for short-term versus longer-term comfort. Another NSAID used in cats in some contexts is meloxicam, which may be available in specific veterinary formulations such as Metacam Oral Suspension For Cats. Because NSAIDs are not interchangeable, the choice and dose should follow the prescribed plan and the official product information for that formulation.

In certain cases, a clinic may consider non-NSAID options (for example, gabapentin or opioids) or multimodal pain control, especially when NSAID risk is a concern. For general educational context on a different pain medicine class, see Gabapentin Uses And Side Effects. If a different robenacoxib product form is being discussed, Onsior Solution is a separate listing that may have different directions and use cases to confirm with a veterinarian.

Pricing and Access

For Onsior Cat, access typically requires a valid veterinary prescription, because it is a regulated prescription medication. BorderFreeHealth supports cross-border fulfillment by coordinating with partner pharmacies and ensuring prescription details are in place before dispensing. This model can be helpful when U.S.-based customers are using cash-pay instead of submitting coverage, including without insurance, but the prescriber’s directions remain the main reference for how the medicine is used.

Cash-pay options are available when insurance isn’t used. Costs can vary based on the prescribed quantity and available packaging. For site-wide savings opportunities that may apply to eligible items, review Current Promotions. If there are questions about documentation, accepted prescription formats, or transfer steps, customer support can help clarify what information is needed for processing.

Authoritative Sources

For the most reliable details on indications, contraindications, and adverse reactions, it helps to review regulatory and veterinary references alongside a veterinarian’s guidance. The sources below are useful for confirming official labeling language and broader NSAID safety considerations in cats.

For deeper background on another NSAID, the resource Meloxicam Uses And Dosage can support informed conversations about anti-inflammatory drug classes and monitoring topics.

• FDA Animal Drugs @ FDA listing: Animal Drugs @ FDA
• Veterinary reference on NSAID risks: Merck Veterinary Manual

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This content is for informational purposes only and is not a substitute for professional medical advice.