Drug dose administration interval too short after Fenbendazole in dogs

35 reports to the FDA describe drug dose administration interval too short in dogs given Fenbendazole. That is 0.6% 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.

35Reports
54%Marked serious
20%Recovered
0.0%Died or euthanised
16 daysTypical onset
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How soon it started

Same day
2 11%
1–2 days
2 11%
3–7 days
3 16%
1–4 weeks
5 26%
Over a month
7 37%

How the animals did

Recovered
7 20%
Still unwell when reported
13 37%
Not known
15 43%

Problems reported at the same time

Age of the animals

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

About this medicine

Fenbendazole treats intestinal worms and some other parasites.

Questions owners ask

Can Fenbendazole cause drug dose administration interval too short in dogs?
35 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 16 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).

Drug dose administration interval too short with similar medicines

All reported side effects of Fenbendazole in dogs · Medicines most reported with drug dose administration interval too short