Malaise after Pyrantel + Sarolaner (Simparica Trio) in dogs

90 reports to the FDA describe malaise in dogs given Pyrantel + Sarolaner. That is 0.2% of all reports for this medicine, compared with 0.4% across reports for all dog medicines, so it is reported less often than average with this medicine.

90Reports
49%Marked serious
24%Recovered
6.7%Died or euthanised
Same dayTypical onset
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How soon it started

Same day
47 54%
1–2 days
15 17%
3–7 days
11 13%
1–4 weeks
5 5.7%
Over a month
9 10%

How the animals did

Recovered
22 24%
Still unwell when reported
31 34%
Died
2 2.2%
Euthanised
4 4.4%
Not known
31 34%

Problems reported at the same time

Age of the animals

Under 1 year
13
1–3 years
25
4–7 years
15
8–11 years
15
12+ years
8

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 malaise in dogs?
90 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).

Malaise with similar medicines

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