Overdose after Pyrantel + Sarolaner (Simparica Trio) in dogs

The FDA has received 359 reports of overdose in dogs after Pyrantel + Sarolaner. That is 0.7% of all reports for this medicine, compared with 1.3% across reports for all dog medicines, so it is reported less often than average with this medicine.

359Reports
47%Marked serious
20%Recovered
2.2%Died or euthanised
Same dayTypical onset
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How soon it started

Same day
169 55%
1–2 days
49 16%
3–7 days
12 3.9%
1–4 weeks
21 6.8%
Over a month
56 18%

How the animals did

Recovered
73 20%
Still unwell when reported
207 58%
Died
3 0.8%
Euthanised
5 1.4%
Not known
71 20%

Problems reported at the same time

Age of the animals

Under 1 year
69
1–3 years
122
4–7 years
79
8–11 years
42
12+ years
19

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 overdose in dogs?
359 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).

Overdose with similar medicines

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