Kidney problems after Pyrantel + Sarolaner (Simparica Trio) in dogs

293 reports to the FDA describe kidney problems in dogs given Pyrantel + Sarolaner. That is 0.5% of all reports for this medicine, compared with 2.4% across reports for all dog medicines, so it is reported less often than average with this medicine.

293Reports
89%Marked serious
5.5%Recovered
30%Died or euthanised
3 daysTypical onset
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How soon it started

Same day
74 28%
1–2 days
52 20%
3–7 days
28 11%
1–4 weeks
39 15%
Over a month
67 26%

How the animals did

Recovered
15 5.1%
Recovered with lasting effects
1 0.3%
Still unwell when reported
165 56%
Died
29 9.9%
Euthanised
58 20%
Not known
25 8.5%

Problems reported at the same time

Age of the animals

Under 1 year
39
1–3 years
52
4–7 years
64
8–11 years
65
12+ years
71

About this medicine

Pyrantel treats roundworms and hookworms. Sarolaner kills fleas, ticks and some mites; monthly.

Products with this combination include Simparica Trio (which also contains moxidectin). The FDA hides brand names in its public data, so these reports cover every product with the same active ingredients.

Questions owners ask

Can Pyrantel + Sarolaner cause kidney problems in dogs?
293 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 3 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).

Kidney problems with similar medicines

All reported side effects of Pyrantel + Sarolaner in dogs · Medicines most reported with kidney problems