Didn't prevent heartworm after Sentinel in dogs

24 reports to the FDA describe didn't prevent heartworm in dogs given Sentinel. That is 27% of all reports for this medicine, compared with 13% across reports for all dog medicines, so it is reported unusually often with this medicine.

24Reports
88%Marked serious
4.2%Recovered
0.0%Died or euthanised
–Typical onset
SponsoredWorried about your pet? Ask a veterinarian online, 24/7

How the animals did

Recovered
1 4.2%
Still unwell when reported
22 92%
Not known
1 4.2%

Problems reported at the same time

Breathing problems
1 4.2%
Loss of appetite
1 4.2%
Leucocytosis
1 4.2%
Nasal bleeding
1 4.2%

Age of the animals

Under 1 year
0
1–3 years
17
4–7 years
4
8–11 years
2
12+ years
1

About this medicine

Type: medicine.

Questions owners ask

Can Sentinel cause didn't prevent heartworm in dogs?
24 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).

Didn't prevent heartworm with similar medicines

All reported side effects of Sentinel in dogs · Medicines most reported with didn't prevent heartworm