Drooling after Fenbendazole in dogs

120 reports to the FDA describe drooling in dogs given Fenbendazole. That is 2.0% of all reports for this medicine, compared with 1.4% across reports for all dog medicines.

120Reports

54%Marked serious

17%Recovered

16%Died or euthanised

3 daysTypical onset

How soon it started

Same day

21 29%

1–2 days

12 16%

3–7 days

14 19%

1–4 weeks

15 21%

Over a month

11 15%

How the animals did

Recovered

19 16%

Recovered with lasting effects

1 0.8%

Still unwell when reported

41 34%

Died

10 8.3%

Euthanised

9 7.5%

Not known

40 33%

Problems reported at the same time

54 45%

36 30%

32 27%

28 23%

28 23%

20 17%

19 16%

19 16%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

About this medicine

Fenbendazole treats intestinal worms and some other parasites.

Questions owners ask

Can Fenbendazole cause drooling in dogs?: 120 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).

Drooling with similar medicines

Drooling after Pyrantel + Sarolaner (Simparica Trio) 475 reports · 0.9% of its reports
Drooling after Febantel + Praziquantel + Pyrantel (Drontal Plus) 91 reports · 1.4% of its reports
Drooling after Pyrantel 116 reports · 2.4% of its reports
Drooling after Praziquantel + Pyrantel 105 reports · 2.8% of its reports

All reported side effects of Fenbendazole in dogs · Medicines most reported with drooling