Dosage Guide • FL · NY · VA • Reviewed by Dr. Tiffany Delacruz, DVM
Solensia Dosage for a 8 lb Cat
frunevetmab · Monoclonal antibody (anti-NGF) for feline osteoarthritis · Small adult breed (8 lb / 3.6 kg)
What pet owners in Florida, New York, and Virginia need to know about Solensia dosing for a 8 lb (small adult cats — Siamese-sized) cat — written by a licensed vet, no specific dose given without an exam.
The dosing principle for Solensia
Solensia (frunevetmab) is dosed at a minimum of 1 mg/kg subcutaneously once monthly, administered by a veterinarian. Pre-filled syringes come in fixed volumes (0.4 mL = 5.6 mg, 0.7 mL = 9.8 mg) — vets pick the closest fit for the cat's weight.
Solensia is administered by a veterinarian — there's no at-home component for the injection itself. Weight matters because the dose is fitted to the closest pre-filled syringe size. Most cats respond within 1-2 monthly injections. It's currently considered the most well-tolerated chronic pain option for cats and has revolutionized feline arthritis management.
Why 8 lb matters
A 8 lb (3.6 kg) cat falls into the small adult category — typical examples include small adult cats — Siamese, Abyssinians, Burmese, and lean Domestic Shorthairs.
8 lb is a typical lean adult cat weight. Most cat medication doses are calibrated near this weight range. Common medications use this weight as the reference for default-dose calculations.
What Solensia is approved for
- Chronic pain associated with feline osteoarthritis
What to watch for in your 8 lb cat
- Injection-site reaction (uncommon)
- Vomiting or diarrhea (uncommon)
- Loss of response over time — some cats need dose adjustment or additional therapies
- Most cats tolerate it remarkably well — Solensia is considered the safest chronic pain option for cats
Talk to a RexVet vet in your state
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New York
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Virginia
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Learn more about Solensia
Solensia — Full Drug Guide
Uses, side effects, drug interactions, and how it compares to alternatives.
Frequently asked questions
Frequently asked questions
How much Solensia can I give my 8 lb cat?
Solensia (frunevetmab) is dosed at a minimum of 1 mg/kg subcutaneously once monthly, administered by a veterinarian. Pre-filled syringes come in fixed volumes (0.4 mL = 5.6 mg, 0.7 mL = 9.8 mg) — vets pick the closest fit for the cat's weight. For a 8 lb (3.6 kg) cat, this gives a range that a licensed vet will narrow down based on the indication, your cat's age, kidney/liver function, and any other medications.
Is Solensia safe for a small adult cat like mine?
Solensia (frunevetmab) is widely used in cats in the 8 lb range, but "safe" depends on the specific cat, not just the weight. 8 lb is a typical lean adult cat weight. Most cat medication doses are calibrated near this weight range. Common medications use this weight as the reference for default-dose calculations. A licensed vet will check your cat's history, current medications, and any underlying conditions before prescribing.
What should I watch for after giving my 8 lb cat Solensia?
The most common things to watch for are: Injection-site reaction (uncommon); Vomiting or diarrhea (uncommon); Loss of response over time — some cats need dose adjustment or additional therapies. If you see anything concerning, contact a vet. For small adult cats specifically: 8 lb is a typical lean adult cat weight.
Can a RexVet online vet prescribe Solensia for my 8 lb cat?
Not after a video visit alone. A RexVet veterinarian can discuss whether Solensia is an option; it is given as an injection at a clinic.
Solensia dosing for other cat weights
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.
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