Skin redness after Fenbendazole in dogs

The FDA has received 38 reports of skin redness in dogs after Fenbendazole. That is 0.6% of all reports for this medicine, compared with 1.0% across reports for all dog medicines.

38Reports

53%Marked serious

13%Recovered

21%Died or euthanised

2 daysTypical onset

How soon it started

Same day

5 19%

1–2 days

10 37%

3–7 days

4 15%

1–4 weeks

4 15%

Over a month

4 15%

How the animals did

Recovered

4 11%

Recovered with lasting effects

1 2.6%

Still unwell when reported

12 32%

Died

3 7.9%

Euthanised

5 13%

Not known

13 34%

Problems reported at the same time

10 26%

9 24%

9 24%

8 21%

8 21%

7 18%

7 18%

Skin rash or irritation

7 18%

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 skin redness in dogs?: 38 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 2 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).

Skin redness with similar medicines

Skin redness after Pyrantel + Sarolaner (Simparica Trio) 205 reports · 0.4% of its reports
Skin redness after Febantel + Praziquantel + Pyrantel (Drontal Plus) 45 reports · 0.7% of its reports
Skin redness after Pyrantel 57 reports · 1.2% of its reports
Skin redness after Praziquantel + Pyrantel 42 reports · 1.1% of its reports

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