Foaming at the mouth after Pyrantel + Sarolaner (Simparica Trio) in dogs

The FDA has received 147 reports of foaming at the mouth in dogs after Pyrantel + Sarolaner. That is 0.3% of all reports for this medicine, compared with 0.2% across reports for all dog medicines, so it is reported unusually often with this medicine.

147Reports
80%Marked serious
29%Recovered
12%Died or euthanised
1 daysTypical onset
SponsoredWorried about your pet? Ask a veterinarian online, 24/7

How soon it started

Same day
57 40%
1–2 days
34 24%
3–7 days
22 15%
1–4 weeks
22 15%
Over a month
7 4.9%

How the animals did

Recovered
43 29%
Still unwell when reported
57 39%
Died
7 4.8%
Euthanised
11 7.5%
Not known
29 20%

Problems reported at the same time

Age of the animals

Under 1 year
30
1–3 years
50
4–7 years
34
8–11 years
22
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 foaming at the mouth in dogs?
147 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 1 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).

Foaming at the mouth with similar medicines

All reported side effects of Pyrantel + Sarolaner in dogs · Medicines most reported with foaming at the mouth