Weakness after Fluoxetine in dogs

The FDA has received 32 reports of weakness in dogs after Fluoxetine. That is 1.2% of all reports for this medicine, compared with 1.4% across reports for all dog medicines.

32Reports

72%Marked serious

38%Recovered

22%Died or euthanised

31 daysTypical onset

How soon it started

Same day

3 14%

1–2 days

2 9.1%

3–7 days

2 9.1%

1–4 weeks

4 18%

Over a month

11 50%

How the animals did

Recovered

12 38%

Still unwell when reported

8 25%

Died

3 9.4%

Euthanised

4 13%

Not known

5 16%

Problems reported at the same time

10 31%

9 28%

8 25%

7 22%

7 22%

7 22%

6 19%

5 16%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

About this medicine

Fluoxetine treats anxiety and behaviour problems.

Questions owners ask

Can Fluoxetine cause weakness in dogs?: 32 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 31 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).

Weakness with similar medicines

Weakness after Gabapentin 814 reports · 9.0% of its reports
Weakness after Selegiline (Anipryl) 141 reports · 3.4% of its reports
Weakness after Trazodone 117 reports · 4.6% of its reports

All reported side effects of Fluoxetine in dogs · Medicines most reported with weakness