Tremors after Sarolaner (Simparica) in cats
69 reports to the FDA describe tremors in cats given Sarolaner. That is 27% of all reports for this medicine, compared with 2.6% across reports for all cat medicines, so it is reported unusually often with this medicine.
69Reports
75%Marked serious
17%Recovered
4.3%Died or euthanised
Same dayTypical onset
Sponsored
How soon it started
How the animals did
Problems reported at the same time
Age of the animals
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.
Questions owners ask
- Can Sarolaner cause tremors in cats?
- 69 reports link the two, but a report alone does not prove the medicine was the cause: other illnesses, other medicines or coincidence can be involved. Your vet can judge it for your animal.
- How soon after a dose was it reported?
- In half of the reports with dates, it started within the same day of the first dose.
- What should I do?
- Don't give another dose until you've spoken to your vet, and keep the packaging so you can tell them the product and dose. Your vet can also report it to the FDA (or you can, through the manufacturer or FDA form 1932a).
Tremors with similar medicines
- Tremors after Fluralaner (Bravecto) 236 reports · 2.2% of its reports
- Tremors after Sarolaner + Selamectin (Revolution Plus) 269 reports · 3.3% of its reports
- Tremors after Fluralaner + Moxidectin (Bravecto Plus) 98 reports · 3.0% of its reports
- Tremors after Lotilaner (Credelio) 37 reports · 4.1% of its reports
All reported side effects of Sarolaner in cats · Medicines most reported with tremors