Fever after Cefovecin (Convenia) in cats

715 reports to the FDA describe fever in cats given Cefovecin. That is 8.2% of all reports for this medicine, compared with 3.2% across reports for all cat medicines, so it is reported unusually often with this medicine.

715Reports
47%Marked serious
17%Recovered
16%Died or euthanised
3 daysTypical onset
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How soon it started

Same day
148 26%
1–2 days
132 23%
3–7 days
93 16%
1–4 weeks
167 29%
Over a month
30 5.3%

How the animals did

Recovered
120 17%
Recovered with lasting effects
1 0.1%
Still unwell when reported
332 46%
Died
66 9.2%
Euthanised
48 6.7%
Not known
148 21%

Problems reported at the same time

Age of the animals

Under 1 year
90
1–3 years
188
4–7 years
174
8–11 years
175
12+ years
75

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 fever in cats?
715 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 3 days 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).

Fever with similar medicines

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