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NOTE: It’s easy! Submit your order and Pet’s First Choice will verify your pet’s prescription with your veterinarian. Please allow 24-48 hours for this validation.


This item is by prescription only.

$4.23 per pill


ONSIOR is an excellent pain relief option, as it is the only FDA-approved oral NSAID for cats and is the #1 feline NSAID brand in the US. Many cats require just a single tablet to obtain the full daily dose, which absorbs rapidly. ONSIOR persists at the site of inflammation and is then quickly cleared from the bloodstream.

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