Collapse after Cefovecin (Convenia) in cats

162 reports to the FDA describe collapse in cats given Cefovecin. That is 1.9% 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.

162Reports

74%Marked serious

12%Recovered

52%Died or euthanised

Same dayTypical onset

How soon it started

Same day

80 65%

1–2 days

11 8.9%

3–7 days

12 9.7%

1–4 weeks

12 9.7%

Over a month

9 7.3%

How the animals did

Recovered

20 12%

Still unwell when reported

37 23%

Died

71 44%

Euthanised

13 8.0%

Not known

21 13%

Problems reported at the same time

84 52%

49 30%

46 28%

38 23%

31 19%

28 17%

26 16%

24 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 collapse in cats?: 162 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 the same 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).

Collapse with similar medicines

Collapse after Amoxicillin + Clavulanate (Clavamox) 32 reports · 1.3% of its reports

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