Didn't prevent heartworm after Prednisolone + Trimeprazine in dogs

24 reports to the FDA describe didn't prevent heartworm in dogs given Prednisolone + Trimeprazine. That is 1.1% of all reports for this medicine, compared with 13% across reports for all dog medicines, so it is reported less often than average with this medicine.

24Reports

25%Marked serious

8.3%Recovered

0.0%Died or euthanised

–Typical onset

How the animals did

Recovered

2 8.3%

Still unwell when reported

4 17%

Not known

18 75%

Problems reported at the same time

Didn't work as expected

10 42%

Weight gain

5 21%

Breathing problems

3 13%

Allergy

2 8.3%

Cough

2 8.3%

Loose stool

2 8.3%

Dry skin

2 8.3%

Underdose

2 8.3%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

About this medicine

Prednisolone reduces inflammation and immune activity.

Steroids commonly cause increased thirst, urination and appetite, especially at higher doses.

Questions owners ask

Can Prednisolone + Trimeprazine 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

Didn't prevent heartworm after Prednisone 600 reports · 6.7% of its reports
Didn't prevent heartworm after Dexamethasone 81 reports · 3.0% of its reports
Didn't prevent heartworm after Prednisolone 87 reports · 7.2% of its reports

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