Sarolaner (Simparica) side effects in cats
255 reports sent to the FDA between 2016 and 2026 involve Sarolaner in cats. The most reported problems were seizures, accidental exposure, vomiting. 58% were marked serious.
About this medicine
Sarolaner kills fleas, ticks and some mites; monthly.
Products with this ingredient include Simparica. The FDA hides brand names in its public data, so these reports cover every product with the same active ingredients.
In 2018 the FDA alerted owners and vets that isoxazoline products have been associated with neurologic reactions such as muscle tremors, wobbliness (ataxia) and seizures, including in animals with no history of them.
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 (249 reports).
How the animals did
Breeds named most often
Popular breeds appear more often because there are more of them.
- Domestic Shorthair 163 reports
- Cat (other) 50 reports
- Domestic Longhair 14 reports
- Domestic Mediumhair 10 reports
- Siamese 3 reports
- Maine Coon 3 reports
- Ragdoll 2 reports
- Persian 1 reports