Tremors after Cefovecin (Convenia) in cats

247 reports to the FDA describe tremors in cats given Cefovecin. That is 2.8% of all reports for this medicine, compared with 2.6% across reports for all cat medicines.

247Reports

49%Marked serious

10%Recovered

29%Died or euthanised

1 daysTypical onset

How soon it started

Same day

69 37%

1–2 days

53 28%

3–7 days

32 17%

1–4 weeks

26 14%

Over a month

9 4.8%

How the animals did

Recovered

25 10%

Still unwell when reported

82 33%

Died

46 19%

Euthanised

26 11%

Not known

68 28%

Problems reported at the same time

97 39%

75 30%

70 28%

69 28%

68 28%

38 15%

35 14%

33 13%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

About this medicine

Cefovecin a long-acting antibiotic injection.

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

Questions owners ask

Can Cefovecin cause tremors in cats?: 247 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 1 day 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).

Tremors with similar medicines

Tremors after Amoxicillin + Clavulanate (Clavamox) 50 reports · 2.1% of its reports
Tremors after Enrofloxacin (Baytril) 42 reports · 2.7% of its reports

All reported side effects of Cefovecin in cats · Medicines most reported with tremors