Hair loss after Cefovecin (Convenia) in cats

The FDA has received 577 reports of hair loss in cats after Cefovecin. That is 6.6% of all reports for this medicine, compared with 14% across reports for all cat medicines, so it is reported less often than average with this medicine.

577Reports
36%Marked serious
9.5%Recovered
7.5%Died or euthanised
7 daysTypical onset
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How soon it started

Same day
57 12%
1–2 days
93 19%
3–7 days
122 25%
1–4 weeks
140 29%
Over a month
75 15%

How the animals did

Recovered
53 9.2%
Recovered with lasting effects
2 0.3%
Still unwell when reported
304 53%
Died
21 3.6%
Euthanised
22 3.8%
Not known
175 30%

Problems reported at the same time

Age of the animals

Under 1 year
43
1–3 years
87
4–7 years
120
8–11 years
141
12+ years
172

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 hair loss in cats?
577 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 7 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).

Hair loss with similar medicines

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