Apoquel vs Cytopoint: Which Is Better for Your Itchy Dog?

By Marc Brannigan and Natalie Mondine, co-founders of HempMy Pet · Published November 6, 2026 · Last reviewed November 6, 2026. We have grown and bottled full-spectrum hemp for pets on our own Colorado farm since 2016. We are not veterinarians — every figure below comes from the FDA-approved and USDA-licensed product labels and the peer-reviewed studies listed at the end.

Apoquel vs Cytopoint at a Glance

Every row comes from the current US label unless another source is named.

Sources: Apoquel label on DailyMed · Apoquel Chewable label · Cytopoint US package insert (Zoetis) · Zoetis Cytopoint owner page · Vetster cost comparison

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Written by Marc Brannigan and Natalie Mondine, co-founders of HempMy Pet.

What Apoquel Is and How It Works

Apoquel's active ingredient, oclacitinib, blocks Janus kinase enzymes inside cells. Many of the messengers that drive itch and skin inflammation — the label calls them "pruritogenic cytokines and pro-inflammatory cytokines" — need JAK1 or JAK3 to pass their signal along. Oclacitinib interrupts that relay. It has little effect on JAK2-dependent cytokines involved in making blood cells, and it is neither a steroid nor an antihistamine.

It is absorbed fast (peak blood levels in under an hour, 89% bioavailability) and cleared fast (a half-life of about 4 hours by mouth). That is why it is given twice a day for the first two weeks to bring a flare down, then once a day to hold it. It can be given with or without food. There is also Apoquel Chewable, the same drug and the same dose in a chewable tablet, approved under its own FDA number.

What the trials found. In the 436-dog allergic dermatitis trial (Cosgrove 2013), itch scores fell from 7.58 to 2.59 cm on a 10 cm scale, onset came within 24 hours, and 67% of Apoquel dogs met the success definition against 29% on placebo. In the 299-dog atopic dermatitis trial (Cosgrove 2013), owner itch scores dropped 29.5% by day 1 and 66.7% by day 14, and vets recorded a 48.4% reduction in skin lesion scores. In a 226-dog comparison with ciclosporin (Little 2015), Apoquel worked faster — significantly better through day 28 — with a third of the gastrointestinal side effects, though ciclosporin caught up by day 56.

What Cytopoint Is and How It Works

Cytopoint is not a drug in the chemical sense. It is a monoclonal antibody made to look like a dog's own antibody ("caninized"), designed to bind and neutralize interleukin-31, a messenger that triggers the itch sensation. With IL-31 soaked up, the nerve signal for itch is reduced. Because it is a protein, it is cleared the way the body clears its own antibodies — by normal protein breakdown, not through the liver enzymes that process most drugs — and it stays in circulation for several weeks.

That is also why it is regulated differently. Cytopoint is a biologic licensed by the USDA, not an FDA-approved drug, and its label describes it as a "canine allergic dermatitis immunotherapeutic."

What the trials found. In the 211-dog dose trial (Michels 2016), a single 2 mg/kg injection reduced owner-scored itch from day 1 to day 49 and skin lesions from day 7 to day 56 compared with placebo; lower doses worked later and for less time. In a 274-dog European trial against ciclosporin (Moyaert 2017), lokivetmab matched ciclosporin for itch at day 28 (51.9% vs 43.7% reduction) but did not formally meet the non-inferiority bar for skin lesions (54.2% vs 56.9%), and 76.3% of dogs that continued for six more months were rated normal for itch at the end. Long-term, a 150-dog German review (Kasper 2024) found a 77% success rate with at least three consecutive injections and side effects such as stomach upset or lethargy in 8% of dogs, and a 12-month US study at label dosing (Gober 2025) found 87% of dogs stayed below their starting itch score.

Is Apoquel or Cytopoint Better? What the Head-to-Head Evidence Says

Here is the inconvenient part. Both drugs were tested against placebo and against ciclosporin, an older allergy drug. They were never put against each other in a large trial of pet dogs. When RCVS Knowledge, the UK veterinary evidence charity, asked exactly this question in 2022 (Cheung 2022), the only randomized comparison it could find was a study of 19 research Beagles (Marsella 2020). In that study Apoquel and prednisone lowered lesion scores in the first two weeks, lokivetmab prevented flares when given before allergen exposure, and both Apoquel and lokivetmab protected skin-barrier measures. The reviewers rated the strength of evidence as weak and concluded further comparative study is required.

So when a page tells you one is simply "better," it is giving you an opinion. The real comparison is about your dog: age, size, other conditions, other medications, whether you can give a daily tablet, and how the itch responds. Many dogs try one, then the other — and a dog's response to Apoquel can hint at how it will respond to Cytopoint, according to the same review.

Dosing by Weight: Apoquel and Cytopoint

Apoquel tablets are from the label's dosing chart; Cytopoint vials are from the label's dosing tables. Your vet writes the prescription — this table is for understanding it, not replacing it.

Calculated from the Apoquel label (0.4–0.6 mg/kg; chart bands from 6.6 to 175.9 lb) and the Cytopoint package insert (minimum 0.9 mg/lb, 2 mg/kg; dogs under 5 lb get 0.2 mL/kg from a 10 mg vial). Every Apoquel dose above works out to 0.44–0.59 mg/kg; every Cytopoint dose to 2.2–3.7 mg/kg — roughly 1 mg of lokivetmab per pound.

Two practical notes the labels make clear. First, the twice-daily Apoquel phase is capped at 14 days on the label; the drop to once daily is part of the design, not a sign the drug has stopped working. Second, Cytopoint's interval is "every 4–8 weeks as needed in individual patients," so a dog whose itch returns at week five is not failing — that is its interval. Track the day the itch comes back and tell your vet.

Side Effects and Safety: What the Labels Actually Report

Apoquel

In the 30-day trial, the short-term side effects were close to placebo: diarrhea 2.3% vs 0.9%, vomiting 2.3% vs 1.8%, lethargy 1.8% vs 1.4%, loss of appetite 1.4% vs 0%, increased thirst 1.4% vs 0%. Most resolved without stopping the drug. Bloodwork showed small drops in some white-cell counts and a rise in cholesterol in 25% of dogs, with group averages staying in the normal range.

The longer-term picture is where the warnings come from. Among 283 dogs that received Apoquel across the atopic dermatitis studies, owners or vets reported pyoderma (skin infection) in 12.0%, skin lumps in 12.0%, ear infection in 9.9%, vomiting in 9.2% and histiocytoma in 3.9%. In the 239-dog continuation study (average 372 days on the drug, no placebo group), there were cases of demodicosis, pneumonia, and six dogs euthanized for suspected malignancies. In the lab safety study, healthy one-year-old Beagles given up to five times the dose developed papillomas and dose-dependent interdigital cysts on the feet.

The label also notes that Apoquel "has not been evaluated in combination with glucocorticoids, cyclosporine, or other systemic immunosuppressive agents," and in a vaccine study at three times the dose, puppies responded adequately to rabies, distemper and parvovirus vaccines but only 6 of 8 to parainfluenza.

Cytopoint

In the 245-dog field safety study, there was no clinically relevant difference in adverse events, or in bloodwork, between Cytopoint and placebo, and dogs safely received a wide range of other medications including parasiticides, antibiotics, steroids, vaccines, allergy immunotherapy, antihistamines, oclacitinib and ciclosporin. A lab study gave seven monthly injections at up to 10 mg/kg — five times the minimum dose — without safety problems. After approval, the label reports rare cases (more than 1 but fewer than 10 per 10,000 dogs) of allergic reactions, vomiting or diarrhea, and seizure or ataxia, and very rare cases (under 1 in 10,000) of immune-mediated anemia or low platelets. The other catch: some dogs make antibodies against the antibody, which can cause a "noticeable decrease in efficacy" in dogs that responded before.

Does Apoquel Cause Cancer or Mast Cell Tumors?

This is the question owners search most after starting Apoquel, and it deserves a straight answer. The label says new benign and malignant tumors "were observed in dogs treated with APOQUEL during clinical studies and have been reported in the post-approval period." In the trials, one dog developed a Grade III mast cell tumor after 60 days and two developed Grade II mast cell tumors at 52 and 91 days — but one placebo dog also developed a mast cell tumor, and the year-long study had no placebo group to compare against.

The best evidence on cause is a 660-dog study matched by age and breed (Lancellotti 2020): malignancies in 16.5% of dogs treated with Apoquel for at least six months versus 12.8% of similar dogs treated before Apoquel existed, skin masses 56.6% vs 58.3%, and average age at death 11.2 vs 11.8 years. The authors found no meaningful difference and no link to dose, while advising vets to keep following the label warnings and screen allergic dogs for tumors either way. A 2025 safety review by Zoetis scientists (Nederveld 2025) reached the same conclusion — worth knowing that it comes from the manufacturer. The practical answer: any new lump on a dog taking Apoquel gets a needle sample, not a wait-and-see.

Cost: Apoquel vs Cytopoint

Prices vary widely by clinic, region and pharmacy, so take any number as a starting point. Vetster's March 2026 comparison for a 20-lb dog put Apoquel at about $140 for the first month — 44 tablets at roughly $3.20 each, because the first 14 days are twice daily — and Cytopoint at about $50–$150 per injection, each typically lasting one to two months, plus any exam or injection fee.

Two things change the math. After the first month Apoquel falls to one tablet a day, roughly 30 tablets a month. And Cytopoint scales with body weight: by the label tables a 25-lb dog needs one 30 mg vial, while a 90-lb dog needs three vials totalling 90 mg — so the injection that is cheap for a terrier can cost several times more for a Labrador. Ask your clinic for both prices at your dog's weight, for the first three months and for maintenance.

Can You Give Apoquel and Cytopoint Together?

Yes, when a vet directs it. Cytopoint's label lists oclacitinib among the medications used safely alongside it. The strongest outcome data come from a 2026 retrospective study (Bachtel 2026) of 44 dogs that had not responded adequately to either drug on its own: 27 of 44 (61.4%) responded to the combination, their average itch score fell from 6.87 to 2.67 out of 10, and no side effects were noted. That is a single-practice look-back, not a controlled trial, and it means paying for both. Vets usually reach for it when one drug alone has failed, or to cover a seasonal peak.

Which Dogs Should Not Take Each

• Apoquel — not for: dogs under 12 months; dogs with serious infections; breeding dogs and pregnant or nursing females. Weigh carefully in: dogs with recurrent serious infections, recurrent demodex mange, or a history of cancer; dogs already on steroids, ciclosporin or other immune-suppressing drugs (never evaluated together).
• Cytopoint — use caution in: dogs that reacted to a previous injection; pregnant, nursing or breeding dogs (not tested); dogs whose response has faded, which may signal anti-drug antibodies. It is for dogs only.
• Both: neither treats a skin infection, ear infection or fleas. If those are present, they need their own treatment or the itch will keep coming back. See hot spots on dogs and dog ear infections.

What Helps the Itch Underneath — With or Without a Prescription

Apoquel and Cytopoint control symptoms. They do not cure allergy, and the itch comes back when the dose wears off. The international ICADA guidelines (Olivry 2015) put the foundations first, and these are the steps that most often reduce how much drug a dog needs:

1. Year-round flea control. ICADA: dogs with atopic dermatitis "should be treated year-round with an effective flea control regimen," using oral or systemic products if you bathe often. One bite can set off a flea-allergic dog.
2. A proper food trial. Blood and skin tests for food allergy are not recommended. A strict elimination diet is the test, and it has to run long enough: more than 90% of dogs with a food reaction are in remission by 8 weeks (Olivry 2015 CAT). Treats, flavored chews and table scraps break the trial.
3. Bathing and skin-barrier care. ICADA lists bathing with a mild, non-irritating shampoo for flares and better skin and coat hygiene for chronic cases. Watch for shampoos that dry or irritate.
4. Essential fatty acids, including omega-3s, for skin and coat. ICADA: they can improve coat quality and "might also provide some small benefit," but are not suitable as stand-alone treatment, are not useful for an acute flare, and may take two months to show anything. See the AKC on fish oil for dogs.
5. Treat infections. Pyoderma and yeast drive itch on their own; no anti-itch drug fixes them.
6. Long-term: allergen-specific immunotherapy. ICADA names it, with proactive topical steroid use, as the only interventions likely to prevent or delay flares. Antihistamines such as Zyrtec and Benadryl offer at most a small, variable benefit.

For the full itch work-up, including the body map of where the itch is, see home remedies for dog itching, why your dog licks his paws and our guide to allergies in dogs. Background reading from the Cornell Riney Canine Health Center and the Merck Veterinary Manual.

Where Hemp Fits — and Where It Doesn't

Plainly: hemp is not a replacement for prescribed allergy medication. Do not stop or skip Apoquel or Cytopoint in favor of a hemp product. The canine research on cannabinoids and allergic itch is early — small studies, nothing like the placebo-controlled trials behind the two drugs above — and we do not claim our products treat allergies, dermatitis or itch.

Where hemp can sit is beside a vet's plan, as part of everyday skin, coat and general comfort support. Our strongest evidence is for joint comfort: in our 90-day Colorado State University-affiliated study, 30 of the 32 dogs that finished showed a benefit and 94% of owners reported better quality of life. If your dog is on Apoquel or Cytopoint and you want to add hemp, tell your vet. No study has tested CBD with oclacitinib or lokivetmab; what the canine research shows is in our article on hemp and dog medications, and the side-effect data, including liver enzyme changes, are in hemp and CBD side effects in dogs.

On any prescription medication? Read what the canine research shows about hemp and drug interactions and check with your vet first.

When to Call the Vet

Go now if:

• Facial swelling, hives, collapse, pale gums or labored breathing after a Cytopoint injection.
• A seizure or sudden wobbliness after either drug.
• Your dog ate extra Apoquel tablets.

Book an appointment if:

• A fever, cough, lethargy, or loss of appetite on Apoquel.
• Any new lump or bump, especially one that grows or changes.
• Red bumps, crusts, odor or greasy skin — signs of infection the drugs do not treat.
• Itch returning sooner than expected, or a Cytopoint dose that used to last six weeks now lasting two.

Questions to Ask Your Vet

1. What is driving this itch — environment, food, fleas, infection, or a mix — and how will we find out?
2. Given my dog's age, size and history, which do you prefer and why?
3. What will each cost for my dog's weight over the first three months, and after that?
4. What bloodwork or rechecks do you want, and how often?
5. If the first choice doesn't work in a month, what is plan B — switching, combining, or immunotherapy?
6. Can we start a food trial or tighten flea control at the same time so we may need less medication later?

Report suspected side effects to your vet and to the manufacturer; the FDA explains how to report animal drug side effects.

Newer Options You May Hear About

Apoquel is no longer the only allergy JAK inhibitor. A 2025 review (Wichtowska 2025) notes that the FDA approved ilunocitinib (Zenrelia, Elanco) in 2024 for dogs at least 12 months old, a JAK inhibitor with broader activity across JAK1, JAK2 and TYK2, and that atinvicitinib (Numelvi, MSD Animal Health), a more selective JAK1 inhibitor, was approved in the European Union in 2025. Ask your vet whether either is available and suits your dog; we have not compared their labels here.

Frequently Asked Questions

Which is safer for dogs, Apoquel or Cytopoint?
On paper, Cytopoint. It is an antibody that blocks one itch signal (IL-31) and is broken down like the dog's own proteins, and its US label reports serious reactions only in rare cases (fewer than 10 in 10,000 dogs). Apoquel's FDA label carries warnings Cytopoint's does not: it is not for dogs under 12 months or with serious infections, and it may increase susceptibility to infection, including demodicosis, and worsen existing cancers. That said, a 660-dog study found no meaningful difference in cancer rates with long-term Apoquel use. Safer depends on your dog's age and history, which is why the choice is your vet's.

What is the downside of Cytopoint?
It has to be injected at the clinic every 4 to 8 weeks, so cost includes visits; larger dogs need more vials; it targets itch from a single signal, so some dogs respond only partly; and the label notes some dogs develop anti-drug antibodies that can make a previously effective dose stop working. Rare side effects reported after approval include vomiting or diarrhea, allergic reactions such as facial swelling or hives, and neurological signs such as seizure or ataxia.

Which is cheaper, Apoquel or Cytopoint?
It depends mostly on your dog's size. Vetster's March 2026 estimate for a 20-lb dog put Apoquel at about $140 for the first month (44 tablets at roughly $3.20 each, because the first two weeks are twice daily) and Cytopoint at about $50 to $150 per injection, which typically lasts one to two months. After the first month Apoquel drops to one tablet a day. For big dogs Cytopoint gets more expensive because the dose takes more vials. Ask your clinic for both prices for your dog's weight.

Does Apoquel cause mast cell tumors?
No study has shown that it does. In Apoquel's own trials, one dog developed a Grade III mast cell tumor after 60 days and two more developed Grade II tumors in the year-long continuation study, but one placebo dog also developed one, and the continuation study had no control group. A 2020 study of 660 allergic dogs found malignancies in 16.5% of dogs treated long-term with Apoquel versus 12.8% treated without it, which the authors judged not a meaningful difference. The label still warns that Apoquel may worsen existing cancers, so any new lump should be checked.

Does my dog really need Cytopoint?
Not necessarily. Cytopoint controls itch; it does not cure allergy or fix the cause. If fleas, a food reaction or a skin infection is driving the itch, treating that comes first: year-round flea control, an 8-week elimination diet trial and infection treatment can make a drug unnecessary or reduce how much is needed. Cytopoint makes the most sense for dogs with confirmed environmental (atopic) itch, puppies too young for Apoquel, dogs that are hard to pill, or dogs with health issues that make Apoquel a poorer fit.

What is the most effective allergy shot for dogs?
For fast itch control, Cytopoint is the anti-itch injection most vets use; in its dose trial, 2 mg/kg reduced owner-scored itch from day 1 through day 49. But it is not an allergy shot in the traditional sense. Allergen-specific immunotherapy, where a dog receives tailored doses of the allergens it reacts to, is the only treatment the international ICADA guidelines name, along with proactive topical steroid use, as likely to prevent or delay flares. Many dogs use both: Cytopoint for comfort while immunotherapy takes months to work.

Can you give Apoquel and Cytopoint together?
Yes, under a vet's direction. Cytopoint's label lists oclacitinib (Apoquel) among the medications used safely alongside it in its field safety study. In a 2026 study of 44 dogs that failed each drug on its own, 27 (61.4%) responded adequately to the combination, with average itch scores falling from 6.87 to 2.67 out of 10 and no side effects noted. It is a retrospective study, not a controlled trial, and the combination costs more, so it is usually reserved for dogs that do not respond to one drug alone.

How fast do Apoquel and Cytopoint work?
Both are fast. Apoquel's allergic dermatitis trial found onset within 24 hours, and Zoetis says it starts relieving itch in as little as 4 hours. Cytopoint's label says it reduced induced itch within one day, and its European trial against ciclosporin reported onset within one day. The difference is duration: Apoquel leaves the body in hours (a half-life of about 4 hours) so it must be given every day, while one Cytopoint injection keeps working for 4 to 8 weeks.

Can puppies have Apoquel or Cytopoint?
Apoquel no; Cytopoint yes, per their labels. Apoquel is approved only for dogs at least 12 months old; a safety study in 6-month-old dogs was stopped early when high-dose dogs developed bacterial pneumonia and generalized demodex mange. Cytopoint has no minimum age on its US label, and Zoetis states it is safe for dogs of all ages. Cytopoint has not been tested in pregnant, lactating or breeding dogs, and Apoquel is not for use in them.

Does Apoquel make dogs sleepy?
Occasionally, but not often. In the 30-day allergic dermatitis trial, lethargy was reported in 1.8% of dogs on Apoquel and 1.4% on placebo, and most cases resolved with continued dosing. Lethargy is also on the list of post-approval reports. A dog that becomes markedly tired, stops eating or runs a fever on Apoquel should be seen, because the drug can make infections more likely.

Is there a natural alternative to Apoquel?
Nothing natural matches Apoquel or Cytopoint for stopping a flare, and you should not swap a prescribed allergy drug for a supplement. What does help, with evidence behind it, is reducing the itch load: year-round flea control, a strict 8-week elimination diet trial to rule out food, gentle bathing, and omega-3 or essential fatty acids for skin and coat over at least two months. These can lower how much medication a dog needs. Hemp is not a replacement for prescribed allergy medication; at most it is part of everyday skin, coat and comfort support, with your vet aware.

The Short Version

Apoquel is a daily tablet for dogs over a year old that works within a day and calms both itch and inflammation; Cytopoint is a 4-to-8-week injection for dogs of any age with a gentler safety label but a price that rises with body weight. Neither cures allergy, nobody has tested them head to head in a big trial, and the dogs that do best usually pair one of them with flea control, a real food trial and skin care. Hemp is not a replacement for either.

Zyrtec for Dogs · Benadryl for Dogs · Dog Itching Remedies · Hot Spots on Dogs · Dog Licking Paws · Hemp & Dog Medications · Cytopoint for Dogs

How We Sourced This Article

Every claim above traces to one of these.

• Zoetis / FDA. APOQUEL (oclacitinib maleate) tablet label, NADA 141-345 and APOQUEL CHEWABLE label, NADA 141-555, DailyMed. Source for indications, age limit, dosing chart, warnings, trial adverse-event rates, pharmacokinetics, safety and vaccine studies.
• Zoetis / USDA. CYTOPOINT US package insert. Source for mechanism, 2 mg/kg minimum dose, vial tables, 4–8 week interval, field and laboratory safety, post-approval event frequencies and anti-drug antibodies. Plus Zoetis owner pages for Cytopoint and Apoquel (age statement, 4-hour onset claim).
• Cosgrove SB, et al. Efficacy and safety of oclacitinib for the control of pruritus and associated skin lesions in dogs with canine allergic dermatitis. Vet Dermatol. 2013. PubMed.
• Cosgrove SB, et al. A blinded, randomized, placebo-controlled trial of oclacitinib in client-owned dogs with atopic dermatitis. Vet Dermatol. 2013. PubMed.
• Little PR, et al. Oclacitinib vs ciclosporin for atopic dermatitis in client-owned dogs. Vet Dermatol. 2015. PubMed.
• Michels GM, et al. Dose determination trial of lokivetmab in client-owned dogs with atopic dermatitis. Vet Dermatol. 2016. PubMed.
• Moyaert H, et al. Lokivetmab compared to ciclosporin in client-owned dogs with atopic dermatitis. Vet Dermatol. 2017. PubMed.
• Marsella R, et al. Comparison of various treatment options for canine atopic dermatitis in research atopic Beagles. Vet Dermatol. 2020. PubMed; and Cheung BYT. Is lokivetmab more effective than oclacitinib? Vet Evid (RCVS Knowledge). 2022. PubMed.
• Lancellotti BA, et al. Malignancies and benign skin masses in 660 allergic dogs treated long-term with versus without oclacitinib. JAVMA. 2020. PubMed; and Nederveld SM, et al. Safety of the selective JAK1 inhibitor oclacitinib in dogs. J Vet Pharmacol Ther. 2025 (Zoetis authors). PubMed.
• Kasper B, et al. Long-term use of lokivetmab in dogs with atopic dermatitis. Vet Dermatol. 2024. PubMed; and Gober M, et al. Long term use of lokivetmab in atopic dogs. BMC Vet Res. 2025. PubMed.
• Bachtel JC, Snidow M. Combination oclacitinib and lokivetmab after monotherapeutic failure in 44 dogs. Vet Dermatol. 2026. PubMed.
• Olivry T, et al. Treatment of canine atopic dermatitis: 2015 updated ICADA guidelines. BMC Vet Res. 2015. PubMed; and Olivry T, Mueller RS, Prélaud P. Duration of elimination diets. BMC Vet Res. 2015. PubMed.
• Wichtowska A, Olejnik M. Anti-cytokine drugs in the treatment of canine atopic dermatitis. Int J Mol Sci. 2025. PubMed. Source for Zenrelia and Numelvi approvals.
• Vetster. Cytopoint vs. Apoquel for dogs, March 12, 2026. Source for cost estimates.
• Disclosure: HempMy Pet funded the 90-day canine joint study described in the About box (Kogan, Hellyer, Downing; JAHVMA). We had no involvement in any other study cited here, and we have no relationship with Zoetis, Elanco or MSD.

Spot something that conflicts with your veterinarian's advice? Email support@hempmypet.com and we will correct it.

These statements have not been evaluated by the Food and Drug Administration. Our products are not intended to diagnose, treat, cure, or prevent any disease. This article is general information, not veterinary advice. Never start, stop or change your dog's prescription without your veterinarian.