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

800 reports to the FDA describe diarrhea in dogs given Lufenuron + Milbemycin Oxime + Praziquantel. That is 8.0% of all reports for this medicine, compared with 8.4% across reports for all dog medicines.

800Reports
44%Marked serious
39%Recovered
2.3%Died or euthanised
2 daysTypical onset
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How soon it started

Same day
172 29%
1–2 days
149 25%
3–7 days
64 11%
1–4 weeks
144 24%
Over a month
66 11%

How the animals did

Recovered
309 39%
Recovered with lasting effects
5 0.6%
Still unwell when reported
137 17%
Died
7 0.9%
Euthanised
11 1.4%
Not known
331 41%

Problems reported at the same time

Age of the animals

Under 1 year
190
1–3 years
288
4–7 years
149
8–11 years
109
12+ years
46

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 diarrhea in dogs?
800 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).

Diarrhea with similar medicines

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