Loss of appetite after Fluoxetine in dogs

531 reports to the FDA describe loss of appetite in dogs given Fluoxetine. That is 21% of all reports for this medicine, compared with 8.4% across reports for all dog medicines, so it is reported unusually often with this medicine.

531Reports

26%Marked serious

20%Recovered

7.3%Died or euthanised

14 daysTypical onset

How soon it started

Same day

43 18%

1–2 days

30 13%

3–7 days

37 16%

1–4 weeks

38 16%

Over a month

86 37%

How the animals did

Recovered

75 14%

Recovered with lasting effects

31 5.8%

Still unwell when reported

85 16%

Died

16 3.0%

Euthanised

23 4.3%

Not known

301 57%

Problems reported at the same time

194 37%

122 23%

69 13%

66 12%

55 10%

53 10.0%

42 7.9%

40 7.5%

Age of the animals

Under 1 year

1–3 years

134

4–7 years

175

8–11 years

128

12+ years

About this medicine

Fluoxetine treats anxiety and behaviour problems.

Questions owners ask

Can Fluoxetine cause loss of appetite in dogs?: 531 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 14 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).

Loss of appetite with similar medicines

Loss of appetite after Gabapentin 2,001 reports · 22% of its reports
Loss of appetite after Selegiline (Anipryl) 337 reports · 8.2% of its reports
Loss of appetite after Trazodone 465 reports · 18% of its reports
Loss of appetite after Clomipramine (Clomicalm) 214 reports · 14% of its reports

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