Apoquel, the brand-name medication by Zoetis containing the active ingredient oclacitinib, is a prescription medication veterinarians may prescribe for dogs experiencing itching and inflammation associated with allergic dermatitis and atopic skin conditions.
It is approved by the U.S. Food and Drug Administration (FDA) for use in dogs. The medication is available as a commercially manufactured tablet and may also be prepared as a compounded formulation when a veterinarian determines that commercially available strengths do not meet an individual dog's needs.
What Is Apoquel Used for In Dogs?
Apoquel may be prescribed for the management of allergic dermatitis and atopic dermatitis—conditions often associated with environmental allergens such as pollen, dust mites or certain food ingredients. These conditions commonly cause itching, skin irritation and inflammation.
Prescribing decisions are individualized. Your veterinarian will evaluate your dog's overall health, concurrent conditions and medical history before recommending a management approach.
How Does Apoquel Work?
The active ingredient in Apoquel, oclacitinib, belongs to a class of medications known as Janus kinase (JAK) inhibitors. These medications influence specific cellular signaling pathways involved in inflammation and itch sensation, rather than broadly suppressing the immune system the way traditional corticosteroids do.
During an allergic response, the body releases signaling proteins called cytokines that bind to cellular receptors and contribute to itching and skin inflammation. Oclacitinib acts on Janus kinase enzymes, which are part of the cellular pathway through which these cytokines transmit signals.
Veterinarians may consider this mechanism when evaluating management options for individual dogs, alongside the dog's overall health profile and the nature of their skin condition.
Want More Details? For broader context on allergic skin disease, the American College of Veterinary Dermatology (ACVD) provides extensive resources on how specialists approach these conditions.
What Are the Available Forms of Apoquel?
#1. Commercial Tablet
Apoquel is widely available as a commercially manufactured tablet. These FDA-approved tablets are the standard starting point for therapy and are available in several fixed strengths. For dogs whose needs align with available commercial formulations, these products remain the first therapy.
#2. Compounded Formulations
In some clinical situations, a veterinarian may determine that a commercially available formulation does not meet an individual dog's needs. In those cases, a compounded formulation—such as a flavored oral liquid—may be discussed.
Compounded medications are prepared by a licensed veterinary pharmacy based on a veterinarian's prescription. Mixlab dispenses both commercial Apoquel and compounded oclacitinib.
View All Allergy Relief Treatments for Dogs →
What Are Safety and Monitoring Considerations for Apoquel?
Because Apoquel’s active ingredient acts on immune system signaling pathways, veterinary oversight is an important part of its use. Ongoing monitoring is a standard part of responsible use for any medications that affect the immune system.
Your veterinarian will recommend appropriate examination and laboratory schedules based on your dog's individual circumstances. Always share any changes in your dog's behavior, appetite or skin health with your veterinarian promptly.
Frequently Asked Questions About Apoquel
Is Apoquel a Steroid?
No. Apoquel contains oclacitinib, a JAK inhibitor that acts on specific immune signaling pathways. It is not a corticosteroid and does not work the same way as steroid-based medications.
Your veterinarian can discuss how oclacitinib fits into the range of allergy management options available for dogs.
Is Apoquel an Antihistamine?
No, Apoquel is not an antihistamine. It is a JAK inhibitor that works by targeting specific pathways involved in itch and inflammation, rather than by blocking histamine like traditional antihistamines.
What Are the Side Effects of Apoquel for Dogs?
Possible side effects of Apoquel for dogs may include:
- Vomiting
- Diarrhea
- Decreased appetite
- Lethargy
In some cases, it may also increase susceptibility to infections due to its effect on the immune system. Veterinarians evaluate each dog’s health history before prescribing it.
Does My Dog Need a Prescription for Apoquel?
Yes. Apoquel is a prescription-only medication in the United States. It is not available over the counter.
A licensed veterinarian must evaluate your dog and determine that a prescription is clinically appropriate before it can be dispensed.
Can Oclacitinib Be Compounded for My Dog?
Yes. A veterinarian may prescribe a compounded formulation of oclacitinib—such as a flavored liquid—when commercially available tablets do not meet an individual dog's specific needs.
Compounded medications must be prepared by a licensed veterinary pharmacy and dispensed with a valid prescription.
How Long Can Dogs Take Apoquel?
Some dogs may receive it for short-term management of allergy flare-ups while others may use it as part of a longer-term approach.
The duration of therapy is a clinical decision made by your veterinarian based on your dog's condition, response to the medication and overall health.
How Long Does It Take Apoquel to Work?
Veterinarians often note that some dogs may show observable changes in itching behavior within 4 hours of the first dose, with more consistent response typically observed within 24 hours.
Apoquel is generally considered a relatively fast-acting medication within its class. Individual response can vary based on your dog's overall health and the nature of the underlying condition. Your veterinarian will monitor progress and adjust the approach as needed.
What Observations Should I Share With My Veterinarian While My Dog Is on Apoquel?
Sharing any changes in your dog's behavior, appetite, energy level or skin and coat health with your veterinarian helps inform ongoing care decisions.
Your veterinarian will advise on what to watch for based on your dog's individual health profile and will determine whether any observations warrant a change in approach.
Is Apoquel Appropriate for All Dogs with Skin Allergies?
No, Apoquel is not appropriate for every dog. A veterinarian's evaluation is necessary before it is prescribed.
Factors such as age, health history, concurrent medications and the specific nature of the skin condition all inform whether it is a suitable option for an individual dog.
Ready for Less Itching and More Tail Wagging?
Apoquel is a prescription medication your veterinarian may prescribe as part of a management approach for itching and inflammation associated with allergic skin conditions in dogs.
It acts on specific immune signaling pathways and is available as an FDA-approved commercial tablet, with compounded formulations available if your veterinarian determines commercial options do not meet your individual dog's needs.
Has your veterinarian prescribed Apoquel for your dog? Mixlab's team is ready to help. Just place your order online here and we’ll handle the rest—including fast (and free!) delivery to your doorstep. If you have any questions, reach out to our pharmacy team about your dog's medication options.