Neurological signs after Cefovecin (Convenia) in cats

The FDA has received 117 reports of neurological signs in cats after Cefovecin. That is 1.3% of all reports for this medicine, compared with 0.5% across reports for all cat medicines, so it is reported unusually often with this medicine.

117Reports

48%Marked serious

9.4%Recovered

41%Died or euthanised

1 daysTypical onset

How soon it started

Same day

31 42%

1–2 days

17 23%

3–7 days

10 14%

1–4 weeks

7 9.6%

Over a month

8 11%

How the animals did

Recovered

11 9.4%

Still unwell when reported

33 28%

Died

33 28%

Euthanised

15 13%

Not known

25 21%

Problems reported at the same time

48 41%

44 38%

42 36%

30 26%

26 22%

Eye or vision problems

18 15%

Behaviour change

18 15%

Tremors

18 15%

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 neurological signs in cats?: 117 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).

Neurological signs with similar medicines

Neurological signs after Enrofloxacin (Baytril) 28 reports · 1.8% of its reports

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