Pain after Sarolaner (Simparica) in dogs

80 reports to the FDA describe pain in dogs given Sarolaner. That is 0.5% of all reports for this medicine, compared with 0.7% across reports for all dog medicines, so it is reported less often than average with this medicine.

80Reports
57%Marked serious
10%Recovered
10%Died or euthanised
2 daysTypical onset
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How soon it started

Same day
19 28%
1–2 days
17 25%
3–7 days
3 4.5%
1–4 weeks
11 16%
Over a month
17 25%

How the animals did

Recovered
7 8.8%
Recovered with lasting effects
1 1.3%
Still unwell when reported
44 55%
Died
4 5.0%
Euthanised
4 5.0%
Not known
20 25%

Problems reported at the same time

Age of the animals

Under 1 year
5
1–3 years
13
4–7 years
20
8–11 years
27
12+ years
12

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 pain in dogs?
80 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 2 days 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).

Pain with similar medicines

All reported side effects of Sarolaner in dogs · Medicines most reported with pain