Medically reviewed by Ruffly’s Veterinarian Friends — licensed veterinarians, and pet parents themselves. Last reviewed June 9, 2026. (The reviewing veterinarian will be named here once we have their permission.)
TL;DR: For a dog’s allergic itch, the three most common prescription options work differently. Apoquel (oclacitinib) is an oral daily tablet (a JAK inhibitor) that works fast — within hours. Cytopoint (lokivetmab) is an injection given at the vet (an anti–IL-31 antibody) that lasts about 4–8 weeks and is very gentle on the body. Atopica (cyclosporine) is an oral immune-modulator that’s effective for atopy but takes weeks to reach full effect. There’s no universal “best” — your veterinarian chooses based on your dog, how fast you need relief, and how you prefer to give it.
If your vet has mentioned more than one option for your itchy dog, here’s how Apoquel, Cytopoint, and Atopica compare.
This article is educational and isn’t a substitute for veterinary advice. Your veterinarian determines which option (and dose) is right for your dog.
| Apoquel | Cytopoint | Atopica | |
|---|---|---|---|
| Active ingredient | Oclacitinib | Lokivetmab | Cyclosporine |
| Type | JAK inhibitor | Anti–IL-31 monoclonal antibody | Immune-modulator (calcineurin inhibitor) |
| How it’s given | Oral tablet, daily | Injection at the vet | Oral capsule/liquid, daily |
| Onset | Fast (within hours) | Within a day or two | Slow (several weeks) |
| Duration per dose | ~24 hours | ~4–8 weeks | ~24 hours |
An oral JAK inhibitor that blocks the itch-signaling cytokines (like IL-31) — so it relieves itch fast, often the same day, with fewer side effects than long-term steroids. It’s typically given daily and is convenient for at-home dosing. Best when you want quick, flexible control. Read our full guide to Apoquel for dogs or see the Apoquel product page.
A monoclonal antibody given as an injection at the vet that neutralizes IL-31, a key itch signal. One injection lasts about 4–8 weeks, and because it’s a targeted biologic it’s very gentle on the body — a good fit for dogs that are hard to pill, have other health issues, or do better with a periodic vet visit than daily medication.
An oral immune-modulator that’s effective for chronic atopic dermatitis. Its trade-off is onset: it can take several weeks to reach full effect, so it’s often started alongside something faster, then used for long-term control. Some dogs have initial GI upset that usually settles.
These are often combined with treating the underlying cause (flea control, diet trials, immunotherapy) — see our overview of dog allergies & itchy skin. Steroids are also used for short-term flares but carry more side effects with long-term use.
All three are prescription. For the oral options you fill regularly (Apoquel, Atopica), the per-dose cost adds up — you’ll see pricing on each product page; our medications are internationally sourced from licensed pharmacies and pharmacist-verified, with free shipping over $49. Upload your prescription, have us contact your vet, or transfer it.
Neither is universally better. Apoquel is a fast-acting daily oral tablet; Cytopoint is an injection at the vet lasting 4–8 weeks and is very gentle. The right choice depends on how fast you need relief and whether daily pills or periodic injections suit your dog.
Apoquel works within hours, Cytopoint within a day or two, and Atopica takes several weeks to reach full effect.
Vets sometimes combine therapies (for example, a fast option while a slower one ramps up) and pair them with treating the underlying allergy. Always follow your veterinarian’s plan.
Cytopoint, as a targeted biologic, tends to have minimal systemic effects. Apoquel and Atopica are generally well tolerated but may need periodic monitoring. Your vet will advise based on your dog.
Yes, all three require a veterinary prescription. Upload it, have Ruffly contact your vet, or transfer it.
Learn more in our Apoquel guide and dog allergies overview, see the Apoquel product page, or upload a prescription. Always consult your veterinarian.
