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Robenatail (Robenacoxib) Dose for Cats: Strengths & Dose Calculator

Robenatail is a 6 mg robenacoxib tablet for cats from Vivaldis (India), in strips of 3 [1]. No label dose was found online; robenacoxib for cats on the US Onsior label is 1 mg/kg once a day for up to 3 days [2].

Contains
Robenacoxib
Company
Vivaldis Health and Foods
Forms
Robenatail 6 mg tablet
Label species
Label not available online
Data from
India
Type
NSAID / pain relief

Robenatail dose calculator

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Results are calculated in your browser from the doses and strengths on this page. Check the strength printed on your pack and the label in your country before giving any dose.

Robenatail strengths and presentations

PresentationContainsStrength check
Robenatail 6 mg tablet
PO
Robenacoxib 6 mg per tablet[1]
From the product name on one retail listing.
One source — check pack

Robenatail dose by species

The Robenatail label dose is not published online. The doses below are reference doses for robenacoxib from the cited sources — not from the Robenatail label.

SpeciesUseDoseRouteHow oftenBasis
CatsPost-operative pain (tablets)
Cats ≥ 2.5 kg and ≥ 4 months old.
1 mg/kg[2]POOnce daily · Maximum 3 daysReference — robenacoxib
CatsPost-operative pain (injection)
First dose about 30 minutes before surgery.
2 mg/kg[4]SCOnce daily · Maximum 3 daysReference — robenacoxib

Warnings and precautions

  • The US Onsior label: not for cats under 2.5 kg; robenacoxib can prolong the QT interval [2].

About robenacoxib (the active ingredient)

Non-steroidal anti-inflammatory drug (NSAID, coxib — highly COX-2 selective).

How it works

NSAIDs reduce prostaglandin production by inhibiting the cyclooxygenase (COX) enzymes [3]. Robenacoxib is highly selective for COX-2 [3].

Key safety points

  • Do not use the tablets in cats under 2.5 kg (5.5 lb) — they cannot be dosed accurately [2].
  • Robenacoxib has been shown to prolong the QT interval [2].
  • Do not give with any other oral or injectable NSAID or corticosteroid [4].

All about robenacoxib — doses by species and every brand →

Pack sizes

  • Strip of 3 tablets [1].

Frequently asked questions

What is in Robenatail?

Robenacoxib 6 mg per tablet [1].

What is the Robenatail dose for cats?

No brand label dose was found online; robenacoxib 6 mg tablets for cats are labelled in the US at 1 mg/kg once a day for up to 3 days [2].

Other brands of robenacoxib

More from Vivaldis Health and Foods

All veterinary products →

Robenatail is a trademark of its owner. This page is an independent clinical reference and is not affiliated with Vivaldis Health and Foods. Strengths, species and withdrawal periods can differ between countries — always follow the pack insert in your country.

Have a case in front of you?Ask WeVet — the AI assistant built for veterinarians. Differentials, treatment plans with calculated doses, drug info from trusted sources and SOAP notes.
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R
Medically reviewed by
Dr. Ravi Baraiya, B.V.Sc.
Veterinarian · Reviewed 2 Nov 2026

References

  1. Vivaldis Robenatail (Robenacoxib 6mg) Painkiller Tablet for CatsSupertails (retail listing) · 2026 · Retail listing
    Passage read from this source
    Vivaldis Robenatail (Robenacoxib 6mg) Painkiller Tablet for Cats
    1 Strip (3 tablets)
  2. ONSIOR (robenacoxib) 6 mg tablets for cats — FDA labelingAnimal Drugs @ FDA — US label (reference product) · 2026 · Regulator database
    Passage read from this source
    The dose of ONSIOR tablets is 0.45mg/lb (1mg/kg) orally once daily, for a maximum of 3 days.
    Do not use in cats weighing less than 5.5 lbs, as cats less than 5.5 lbs cannot be accurately dosed.
    ONSIOR has been shown to prolong the QT interval.
  3. Nonsteroidal Anti-inflammatory Drugs in AnimalsMerck Veterinary Manual — S. H. Edwards (updated Sep 2024) · 2024 · Veterinary reference
    Passage read from this source
    Robenacoxib is a coxib-class highly selective COX-2 inhibitor
    Dosage is 2 mg/kg, PO, initially and then 1–2 mg/kg per day thereafter (for up to 6 days in cats).
    NSAIDs act primarily to reduce the biosynthesis of prostaglandins by inhibiting cyclooxygenase (COX).
  4. ONSIOR (robenacoxib) injection — FDA labelingAnimal Drugs @ FDA — US label, Elanco · 2026 · Regulator database
    Passage read from this source
    0.91 mg/lb (2 mg/kg) subcutaneously once daily, for a maximum of 3 days
    The first dose should be administered approximately 30 minutes prior to surgery
    The first dose should be administered approximately 45 minutes prior to surgery
    Do not administer ONSIOR injection or tablets in conjunction with any other oral or injectable NSAID or corticosteroid.

For veterinary professionals. Information supports — never replaces — clinical judgement; always check the current product label and local regulations.

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