Seizures after Cefovecin (Convenia) in cats

521 reports to the FDA describe seizures in cats given Cefovecin. That is 6.0% of all reports for this medicine, compared with 2.6% across reports for all cat medicines, so it is reported unusually often with this medicine.

521Reports

74%Marked serious

11%Recovered

46%Died or euthanised

1 daysTypical onset

How soon it started

Same day

173 43%

1–2 days

103 26%

3–7 days

70 18%

1–4 weeks

33 8.3%

Over a month

19 4.8%

How the animals did

Recovered

59 11%

Still unwell when reported

132 25%

Died

165 32%

Euthanised

74 14%

Not known

91 17%

Problems reported at the same time

237 45%

103 20%

99 19%

68 13%

68 13%

65 12%

56 11%

55 11%

Age of the animals

Under 1 year

1–3 years

4–7 years

105

8–11 years

12+ years

180

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 seizures in cats?: 521 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).

Seizures with similar medicines

Seizures after Amoxicillin + Clavulanate (Clavamox) 94 reports · 3.9% of its reports
Seizures after Enrofloxacin (Baytril) 145 reports · 9.2% of its reports
Seizures after Amoxicillin 26 reports · 5.1% of its reports

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