Liver problems after Febantel + Praziquantel + Pyrantel (Drontal Plus) in dogs

The FDA has received 70 reports of liver problems in dogs after Febantel + Praziquantel + Pyrantel. That is 1.0% of all reports for this medicine, compared with 4.6% across reports for all dog medicines, so it is reported less often than average with this medicine.

70Reports
66%Marked serious
11%Recovered
33%Died or euthanised
3 daysTypical onset
SponsoredWorried about your pet? Ask a veterinarian online, 24/7

How soon it started

Same day
12 23%
1–2 days
12 23%
3–7 days
12 23%
1–4 weeks
11 21%
Over a month
5 9.6%

How the animals did

Recovered
7 10%
Recovered with lasting effects
1 1.4%
Still unwell when reported
10 14%
Died
18 26%
Euthanised
5 7.1%
Not known
29 41%

Problems reported at the same time

Age of the animals

Under 1 year
21
1–3 years
11
4–7 years
17
8–11 years
9
12+ years
12

About this medicine

Febantel treats intestinal worms. Praziquantel treats tapeworms. Pyrantel treats roundworms and hookworms.

Products with this combination include Drontal Plus. The FDA hides brand names in its public data, so these reports cover every product with the same active ingredients.

Questions owners ask

Can Febantel + Praziquantel + Pyrantel cause liver problems in dogs?
70 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).

Liver problems with similar medicines

All reported side effects of Febantel + Praziquantel + Pyrantel in dogs · Medicines most reported with liver problems