Oclacitinib (Apoquel) side effects in cats
463 reports sent to the FDA between 2014 and 2026 involve Oclacitinib in cats. The most reported problems were accidental exposure, kidney problems, vomiting. 51% were marked serious, and where it was recorded, signs eased after stopping the medicine in 20% of cases.
About this medicine
Oclacitinib controls itching from allergies (tablet, a JAK inhibitor).
Products with this ingredient include Apoquel. The FDA hides brand names in its public data, so these reports cover every product with the same active ingredients.
Most reported side effects
Share = percentage of this medicine's reports that mention the problem. One report can list several problems.
Reports that it didn't work
Some reports are about the medicine not working (for example a cat still getting fleas or heartworm), not about a side effect.
How soon problems started
Time from the first dose to the first sign, where both dates were reported (373 reports).
How the animals did
Breeds named most often
Popular breeds appear more often because there are more of them.
- Domestic Shorthair 290 reports
- Cat (other) 64 reports
- Domestic Longhair 31 reports
- Domestic Mediumhair 17 reports
- Siamese 8 reports
- Maine Coon 6 reports
- American Curl Shorthair 5 reports
- Persian 3 reports
- Ragdoll 3 reports
- Bengal 3 reports