Rimadyl Dosage for Dogs
Rimadyl dosage — sometimes searched as "rimadyl for dogs dosage," "rimadyl canine dosage," or just "how much rimadyl for my dog" — follows the same active-ingredient math as generic carprofen, since Rimadyl is carprofen. This page summarizes typical published reference ranges by weight, covering 25mg, 50mg, 75mg, and 100mg strengths; see our full interactive dosage calculator for a weight-based reference tool that applies equally to Rimadyl and generic carprofen.
Only your veterinarian can determine the correct Rimadyl dose for your dog. The figures below are commonly published reference ranges, not dosing instructions.
| Dog weight | Commonly referenced daily total | Typical strength |
|---|---|---|
| 10–20 lbs | ~10–40 mg/day | 25 mg |
| 21–40 lbs | ~25–80 mg/day | 25 mg, 50 mg, or 75 mg |
| 41–60 lbs | ~50–120 mg/day | 75 mg |
| 61–90 lbs | ~75–180 mg/day | 100 mg |
| 91+ lbs | ~100–220 mg/day | 100 mg (may combine strengths) |
Once vs Twice Daily
Rimadyl can be prescribed once daily or split into two doses roughly 12 hours apart, depending on your dog's condition and your vet's preference. Follow the label and your vet's written instructions exactly, and never double up on a missed dose without checking with your vet's office first — see our guide on what to do if you miss a dose.
25mg, 50mg, 75mg, and 100mg Rimadyl: Which Strength Is Which?
Rimadyl's strengths follow the same logic as generic carprofen — smaller tablets for smaller dogs, larger tablets for larger dogs, with combinations used to fine-tune the total daily dose to an individual dog's exact weight. A 25mg Rimadyl chewable is typically used for small dogs or as a fine-tuning strength; 75mg and 100mg cover most small-to-large dogs; 50mg (available in select Rimadyl and Carprieve lines) fills the gap for dogs who don't land neatly on the more common strengths. See our full dosage chart for the underlying weight-based math.
Try the Interactive Reference Calculator
Use our carprofen dosage chart and calculator — the same math applies to Rimadyl since it contains the same active ingredient.
Frequently Asked Questions
Is Rimadyl dosage different from generic carprofen dosage?
No. Rimadyl and generic carprofen products share the same active ingredient at the same strengths, so dosing math is identical — your vet sets the actual prescription.
Can I give Rimadyl once a day?
Some dogs are prescribed a once-daily dose while others receive a split twice-daily schedule. Follow your vet's specific instructions.
What's a typical Rimadyl dosage chart by weight?
Published references generally scale close to 2 mg per pound of body weight per day across the 25mg, 50mg, 75mg, and 100mg strengths — see our full interactive chart for the breakdown by weight band.
Is 25mg Rimadyl enough for a medium-sized dog?
It depends entirely on the dog's actual weight and the vet's calculated total daily dose — 25mg tablets are often combined with other strengths or given in multiples rather than used alone for larger dogs.