Loss of consciousness after Cefovecin (Convenia) in cats

40 reports to the FDA describe loss of consciousness in cats given Cefovecin. That is 0.5% of all reports for this medicine, compared with 0.2% across reports for all cat medicines, so it is reported unusually often with this medicine.

40Reports

15%Marked serious

2.5%Recovered

53%Died or euthanised

–Typical onset

How the animals did

Recovered

1 2.5%

Still unwell when reported

3 7.5%

Died

21 53%

Not known

15 38%

Problems reported at the same time

21 53%

15 38%

11 28%

11 28%

10 25%

10 25%

9 23%

9 23%

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 loss of consciousness in cats?: 40 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.
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 Cefovecin in cats · Medicines most reported with loss of consciousness