Weight gain after Trazodone in dogs

38 reports to the FDA describe weight gain in dogs given Trazodone. That is 1.5% of all reports for this medicine, compared with 0.6% across reports for all dog medicines, so it is reported unusually often with this medicine.

38Reports

42%Marked serious

7.9%Recovered

13%Died or euthanised

49 daysTypical onset

How soon it started

Same day

0 0.0%

1–2 days

3 13%

3–7 days

1 4.3%

1–4 weeks

3 13%

Over a month

16 70%

How the animals did

Recovered

3 7.9%

Still unwell when reported

4 11%

Died

3 7.9%

Euthanised

2 5.3%

Not known

26 68%

Problems reported at the same time

Didn't prevent heartworm

14 37%

Swelling

10 26%

Didn't work as expected

10 26%

9 24%

9 24%

8 21%

8 21%

8 21%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

About this medicine

Trazodone reduces anxiety and stress.

Questions owners ask

Can Trazodone cause weight gain in dogs?: 38 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 49 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).

Weight gain with similar medicines

Weight gain after Gabapentin 70 reports · 0.8% of its reports
Weight gain after Fluoxetine 21 reports · 0.8% of its reports

All reported side effects of Trazodone in dogs · Medicines most reported with weight gain