Death after Cefovecin (Convenia) in cats

The FDA has received 1,898 reports of death in cats after Cefovecin. That is 22% of all reports for this medicine, compared with 8.9% across reports for all cat medicines, so it is reported unusually often with this medicine.

1,898Reports
79%Marked serious
0.0%Recovered
100%Died or euthanised
1 daysTypical onset
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How soon it started

Same day
549 39%
1–2 days
323 23%
3–7 days
230 16%
1–4 weeks
196 14%
Over a month
117 8.3%

How the animals did

Still unwell when reported
1 0.1%
Died
1,252 66%
Euthanised
640 34%
Not known
5 0.3%

Problems reported at the same time

Age of the animals

Under 1 year
146
1–3 years
213
4–7 years
366
8–11 years
434
12+ years
647

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 death in cats?
1,898 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).

Death with similar medicines

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