Diarrhea after Cefovecin (Convenia) in cats

The FDA has received 701 reports of diarrhea in cats after Cefovecin. That is 8.1% of all reports for this medicine, compared with 5.1% across reports for all cat medicines, so it is reported unusually often with this medicine.

701Reports
34%Marked serious
10%Recovered
15%Died or euthanised
1 daysTypical onset
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How soon it started

Same day
169 33%
1–2 days
143 28%
3–7 days
98 19%
1–4 weeks
64 13%
Over a month
34 6.7%

How the animals did

Recovered
71 10%
Still unwell when reported
255 36%
Died
60 8.6%
Euthanised
46 6.6%
Not known
269 38%

Problems reported at the same time

Age of the animals

Under 1 year
62
1–3 years
85
4–7 years
112
8–11 years
155
12+ years
247

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 diarrhea in cats?
701 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).

Diarrhea with similar medicines

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