Seizures after Lufenuron + Milbemycin Oxime + Praziquantel (Sentinel Spectrum) in dogs

The FDA has received 279 reports of seizures in dogs after Lufenuron + Milbemycin Oxime + Praziquantel. That is 2.8% of all reports for this medicine, compared with 4.4% across reports for all dog medicines, so it is reported less often than average with this medicine.

279Reports
67%Marked serious
57%Recovered
6.5%Died or euthanised
2 daysTypical onset
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How soon it started

Same day
54 29%
1–2 days
44 24%
3–7 days
30 16%
1–4 weeks
25 14%
Over a month
32 17%

How the animals did

Recovered
156 56%
Recovered with lasting effects
3 1.1%
Still unwell when reported
65 23%
Died
10 3.6%
Euthanised
8 2.9%
Not known
37 13%

Problems reported at the same time

Age of the animals

Under 1 year
31
1–3 years
76
4–7 years
99
8–11 years
42
12+ years
29

About this medicine

Lufenuron stops flea eggs from developing. Milbemycin Oxime prevents heartworm and controls some intestinal worms (monthly). Praziquantel treats tapeworms.

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

Questions owners ask

Can Lufenuron + Milbemycin Oxime + Praziquantel cause seizures in dogs?
279 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).

Seizures with similar medicines

All reported side effects of Lufenuron + Milbemycin Oxime + Praziquantel in dogs · Medicines most reported with seizures