Carprofen Dosage Chart by Dog Weight (Vet-Reviewed Guide)

Published 2026-05-18

"How much carprofen does my dog need?" is one of the most-searched questions about this medication — and for good reason, since dose scales closely with body weight. Here's how that relationship generally works, and how to use a dosage chart the right way.

Weight Is the Starting Point, Not the Whole Story

Published veterinary references generally describe carprofen dosing in terms of milligrams per pound of body weight per day, most commonly landing around 2 mg per pound per day. But your vet will also factor in your dog's kidney and liver function, other medications, and how the drug is tolerated — which is why two dogs of the same weight can end up on slightly different regimens.

A Rough Sense of Scale

Our full carprofen dosage chart lays out typical published reference ranges by weight band, plus an interactive calculator you can use to get a general sense of scale before your vet visit. Strength-specific detail is also available for 25mg, 50mg, 75mg, and 100mg tablets.

Why Vets Sometimes Combine Tablet Strengths

Because dosing scales with exact body weight rather than round numbers, a dog that weighs, say, 42 lbs won't necessarily land neatly on a single tablet strength. Vets often combine strengths, or prescribe partial tablets (carprofen chewables are typically scored for splitting), to land closer to a dog's calculated target dose than a single strength alone would allow. This is normal and not a sign that something is "off" about the prescription.

Why the Chart Isn't a Prescription

Dosage charts are useful for understanding scale — they're not a substitute for a vet visit. Your vet may choose a different total daily amount, a different schedule (once vs twice daily), or a combination of tablet strengths based on factors a chart can't account for, including bloodwork results, age, and other medications your dog is taking.

How Dosing Can Change Over Time

The dose your dog starts on isn't necessarily permanent. As dogs age, gain or lose weight, or show changes on periodic bloodwork, vets sometimes adjust the carprofen dose up or down. This is a normal part of long-term NSAID management, not a sign the original prescription was wrong. See our guide on how long a dog can safely stay on carprofen for more on what that ongoing relationship looks like.

What to Bring to Your Vet Visit

An accurate, current weight (ideally measured at the clinic), a list of any other medications or supplements, and any GI or kidney history will help your vet land on the right dose faster. If your dog has had any prior reaction to an NSAID, mention it explicitly, even if it seemed minor at the time.