Tremors after Pimobendan (Vetmedin) in dogs

261 reports to the FDA describe tremors in dogs given Pimobendan. That is 4.6% of all reports for this medicine, compared with 3.4% across reports for all dog medicines.

261Reports

37%Marked serious

25%Recovered

12%Died or euthanised

6 daysTypical onset

How soon it started

Same day

55 35%

1–2 days

17 11%

3–7 days

11 7.0%

1–4 weeks

18 11%

Over a month

56 36%

How the animals did

Recovered

63 24%

Recovered with lasting effects

2 0.8%

Still unwell when reported

46 18%

Died

18 6.9%

Euthanised

14 5.4%

Not known

118 45%

Problems reported at the same time

59 23%

57 22%

48 18%

41 16%

36 14%

32 12%

29 11%

28 11%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

161

About this medicine

Pimobendan treats heart failure and some heart disease.

Products with this ingredient include Vetmedin. The FDA hides brand names in its public data, so these reports cover every product with the same active ingredients.

Questions owners ask

Can Pimobendan cause tremors in dogs?: 261 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 6 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).

All reported side effects of Pimobendan in dogs · Medicines most reported with tremors