Dosage Guide • FL · NY · VA • Reviewed by Dr. Tiffany Delacruz, DVM
Carprofen Dosage for a 20 lb Dog
carprofen · Non-steroidal anti-inflammatory drug (NSAID) · Small breed (20 lb / 9 kg)
What pet owners in Florida, New York, and Virginia need to know about Carprofen dosing for a 20 lb (Beagles-sized) dog — written by a licensed vet, no specific dose given without an exam.
The dosing principle for Carprofen
The FDA-labeled dose for carprofen in dogs is approximately 2 mg per pound (4.4 mg/kg) total per day, given as a single dose or split into two doses 12 hours apart.
Carprofen is metabolized by the liver and cleared by the kidneys. Dosing above the labeled range or in a dog with subclinical kidney or liver disease can cause GI ulceration, acute kidney injury, or liver damage. The right dose for your specific dog accounts for weight, age, organ function (verified by bloodwork), and concurrent medications — especially other NSAIDs, steroids, or ACE inhibitors.
Why 20 lb matters
A 20 lb (9 kg) dog falls into the small category — typical examples include Beagles, Cavalier King Charles Spaniels, Pugs, and Boston Terriers.
Small breeds in this weight range are common pet sizes, but breed-specific predispositions (e.g., Pug airway issues, Cavalier heart disease) can affect drug choice and dosing. A breed-aware vet is especially valuable for these dogs.
What Carprofen is approved for
- Pain and inflammation from osteoarthritis
- Post-surgical pain control
- Soft-tissue and orthopedic pain
What to watch for in your 20 lb dog
- Decreased appetite, vomiting, or diarrhea — call your vet same day
- Black, tarry, or bloody stool (possible GI ulceration — urgent)
- Yellow gums or eyes (possible liver issue — urgent)
- Increased thirst or urination (possible kidney involvement)
- Lethargy that's new or worsening
Get a Carprofen prescription or refill in your state
RexVet is licensed in Florida, New York, and Virginia. Our veterinarians can examine your 20 lb dog by video, calculate the right Carprofen dose for their specific situation, and either fill the prescription through our in-house pharmacy or send it to a local pharmacy near you.
Florida
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New York
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Virginia
Online vet care for VA pet owners — Virginia Beach, Richmond, Norfolk, Arlington, and 20+ VA cities.
Frequently asked questions
Frequently asked questions
How much Carprofen can I give my 20 lb dog?
The FDA-labeled dose for carprofen in dogs is approximately 2 mg per pound (4.4 mg/kg) total per day, given as a single dose or split into two doses 12 hours apart. For a 20 lb (9 kg) dog, this gives a range that a licensed vet will narrow down based on the indication, your dog's age, kidney/liver function, and any other medications. RexVet vets serve Florida, New York, and Virginia and can calculate the right dose for your specific dog in a $64.99 video visit.
Is Carprofen safe for a small dog like mine?
Carprofen (carprofen) is widely used in dogs in the 20 lb range, but "safe" depends on the specific dog, not just the weight. Small breeds in this weight range are common pet sizes, but breed-specific predispositions (e.g., Pug airway issues, Cavalier heart disease) can affect drug choice and dosing. A breed-aware vet is especially valuable for these dogs. A licensed vet will check your dog's history, current medications, and any underlying conditions before prescribing.
What should I watch for after giving my 20 lb dog Carprofen?
The most common things to watch for are: Decreased appetite, vomiting, or diarrhea — call your vet same day; Black, tarry, or bloody stool (possible GI ulceration — urgent); Yellow gums or eyes (possible liver issue — urgent). If you see anything concerning, contact a vet. For small dogs specifically: Small breeds in this weight range are common pet sizes, but breed-specific predispositions (e.g., Pug airway issues, Cavalier heart disease) can affect drug choice and dosing.
Can a RexVet online vet prescribe Carprofen for my 20 lb dog?
Yes — if your dog is in Florida, New York, or Virginia and the medical situation is appropriate. Carprofen is one of the medications RexVet's licensed veterinarians can prescribe via a $64.99 video visit. The vet will examine your dog by video, ask about history, and either prescribe Carprofen at the right dose for your dog's weight (20 lb) or recommend a different approach if needed.
Can I get a Carprofen refill in Florida, New York, or Virginia online?
Yes. RexVet is licensed in all three states and can refill Carprofen prescriptions for dogs already established on the medication. Refill visits are also $64.99. Prescriptions are filled through RexVet's in-house pharmacy (RexVetRx) or can be sent to your local pharmacy. Same-day delivery is available in most ZIP codes in FL, NY, and VA.
Carprofen dosing for other dog weights
Other medications dosed for a 20 lb dog
Sources
Last fact-checked: 2026-06-01. Reviewed by Dr. Tiffany Delacruz, DVM. RexVet (Rex Vets Inc.) is licensed in Florida, New York, and Virginia.
Get the right Carprofen dose for your 20 lb dog
Licensed RexVet veterinarians serving Florida, New York, and Virginia. $64.99 video visits, no membership required.