Cytopoint for Pets
Cytopoint is a veterinary injection used to help control allergic itch in dogs, especially dogs with atopic dermatitis or other allergic skin disease. It is prescribed by veterinarians and is not approved for cats.
Quick Facts About Cytopoint
Drug class
Monoclonal antibody therapy that targets interleukin-31 (IL-31), a key itch-signaling protein in dogs.
Common brand names
Cytopoint®
Form
Injection given by a veterinarian.
Species approved for
Dogs. It is not FDA-approved for cats.
What Cytopoint Is Used For
Cytopoint contains lokivetmab, a caninized monoclonal antibody designed to reduce itch associated with allergic dermatitis and canine atopic dermatitis. Rather than working like a steroid or a traditional immunosuppressive drug, it specifically binds IL-31, a cytokine strongly linked to itch. This targeted approach can help reduce scratching, licking, chewing, and rubbing that often worsen skin inflammation and lead to secondary infections. Cytopoint is used in dogs with chronic or recurring allergic skin disease, including environmental allergies, when a veterinarian decides it is an appropriate option.
Side Effects to Watch For
Most dogs tolerate Cytopoint well, but side effects can still happen. Contact your veterinarian if you notice anything unusual after treatment.
- Commonly reported mild effects may include lethargy, vomiting, or mild discomfort at the injection site.
- Some dogs may still have ongoing skin redness, ear problems, or skin infections if the underlying allergy is not fully controlled.
- Rarely, pets may have signs of a hypersensitivity reaction after an injection, such as facial swelling, hives, trouble breathing, or collapse.
- If your dog seems much more uncomfortable, develops severe vomiting, persistent diarrhea, weakness, or worsening skin lesions, call your vet promptly.
Dosing & Administration
Cytopoint is given as an injection by a veterinarian. The timing of repeat treatment varies by patient, because some dogs need it more frequently than others. Follow your vet's instructions exactly and keep all recommended recheck appointments. If your dog's itch returns sooner than expected, or if skin infections, ear infections, or hot spots develop between visits, let your veterinarian know. Cytopoint should only be given under veterinary guidance, and pet owners should never try to substitute a human medication for allergic itch without veterinary approval.
When to Call a Vet
Go to the ER now
- ● Trouble breathing, collapse, or severe weakness after an injection
- ● Facial swelling, hives, or other signs of an allergic reaction
- ● Suspected overdose, accidental product exposure, or any severe reaction
See a vet within 24 hours
- ● Persistent vomiting, diarrhea, or marked lethargy after treatment
- ● Worsening itch, skin redness, hot spots, or signs of ear or skin infection
- ● Your dog is not improving, or symptoms come back much sooner than expected
Watch at home, call if it worsens
- ● Mild sleepiness after the appointment
- ● Brief soreness at the injection site
- ● Mild residual itch while the medication is taking effect
Frequently Asked Questions
Can I give my dog human allergy medicine instead of Cytopoint?
What happens if my dog misses a Cytopoint dose?
Can my cat take Cytopoint?
How quickly does Cytopoint start working?
Does Cytopoint cure allergies?
Disclaimer: The information provided in this article is for educational purposes only and does not constitute veterinary medical advice. Reading this content does not establish a veterinarian-client-patient relationship. Every pet is different — always consult a licensed veterinarian before making decisions about your pet's health, diet, or care. If you'd like personalized guidance, you can talk to one of our vets. If your pet is experiencing a medical emergency, contact your local emergency animal hospital immediately.