Blood in stool after Lufenuron + Milbemycin Oxime (Sentinel) in dogs

63 reports to the FDA describe blood in stool in dogs given Lufenuron + Milbemycin Oxime. That is 0.2% of all reports for this medicine, compared with 0.6% across reports for all dog medicines, so it is reported less often than average with this medicine.

63Reports

19%Marked serious

6.3%Recovered

9.5%Died or euthanised

–Typical onset

How the animals did

Recovered

3 4.8%

Recovered with lasting effects

1 1.6%

Still unwell when reported

3 4.8%

Died

3 4.8%

Euthanised

3 4.8%

Not known

50 79%

Problems reported at the same time

32 51%

29 46%

21 33%

18 29%

14 22%

9 14%

8 13%

6 9.5%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

About this medicine

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

Products with this combination include Sentinel. 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 cause blood in stool in dogs?: 63 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.
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).

Blood in stool with similar medicines

Blood in stool after Spinosad (Comfortis) 56 reports · 0.1% of its reports
Blood in stool after Imidacloprid + Moxidectin (Advantage Multi) 28 reports · 0.2% of its reports
Blood in stool after Nitenpyram (Capstar) 20 reports · 0.2% of its reports

All reported side effects of Lufenuron + Milbemycin Oxime in dogs · Medicines most reported with blood in stool