Cerenia Dosage for a 5 lb Cat

Cerenia (maropitant) for cats is typically dosed at approximately 1 mg/kg subcutaneously or orally for up to 5 consecutive days. There are FDA-approved cat tablets and injectable formulations. For a 5 lb (2.3 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. RexVet vets serve Florida, New York, and Virginia and can calculate the right dose for your specific cat in a $64.99 video visit.

Cerenia (maropitant) is widely used in cats in the 5 lb range, but "safe" depends on the specific cat, not just the weight. Kittens and very small cats have immature liver enzyme systems and are highly sensitive to many medications adult cats tolerate fine. Pill cutting or compounded liquids are often required for accurate dosing. Most adult-cat dosing rules don't apply — pediatric protocols are needed. A licensed vet will check your cat's history, current medications, and any underlying conditions before prescribing.

The most common things to watch for are: Lethargy in the first dose or two (uncommon); Pain or swelling at the injection site if given SQ (a common, transient finding); Continued or worsening vomiting despite Cerenia — the underlying problem needs investigation. If you see anything concerning, contact a vet. For kitten cats specifically: Kittens and very small cats have immature liver enzyme systems and are highly sensitive to many medications adult cats tolerate fine.

If the veterinarian decides it is appropriate after a video visit, they can prescribe it where state rules allow.

RexVet’s veterinarians are licensed in all three states and take Cerenia refill requests where state rules allow for cats 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. When the veterinarian prescribes, same-day delivery is available in most ZIP codes in FL, NY, and VA.