Didn't stop fleas after Prednisone in dogs

The FDA has received 147 reports of didn't stop fleas in dogs after Prednisone. That is 1.6% of all reports for this medicine, compared with 6.2% across reports for all dog medicines, so it is reported less often than average with this medicine.

147Reports

12%Marked serious

19%Recovered

0.7%Died or euthanised

42 daysTypical onset

How soon it started

Same day

13 16%

1–2 days

0 0.0%

3–7 days

5 6.3%

1–4 weeks

18 23%

Over a month

43 54%

How the animals did

Recovered

15 10%

Recovered with lasting effects

13 8.8%

Still unwell when reported

21 14%

Died

1 0.7%

Not known

97 66%

Problems reported at the same time

Didn't work as expected

44 30%

Itching

25 17%

Vomiting

14 9.5%

Skin rash or irritation

8 5.4%

6 4.1%

5 3.4%

4 2.7%

4 2.7%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

About this medicine

Prednisone reduces inflammation and immune activity.

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

Questions owners ask

Can Prednisone cause didn't stop fleas in dogs?: 147 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 42 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).

Didn't stop fleas with similar medicines

Didn't stop fleas after Prednisolone + Trimeprazine 40 reports · 1.9% of its reports

All reported side effects of Prednisone in dogs · Medicines most reported with didn't stop fleas