Leucocytosis after Cefovecin (Convenia) in dogs

175 reports to the FDA describe leucocytosis in dogs given Cefovecin. That is 4.6% of all reports for this medicine, compared with 1.0% across reports for all dog medicines, so it is reported unusually often with this medicine.

175Reports
67%Marked serious
4.0%Recovered
49%Died or euthanised
4 daysTypical onset
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How soon it started

Same day
25 18%
1–2 days
25 18%
3–7 days
38 28%
1–4 weeks
25 18%
Over a month
24 18%

How the animals did

Recovered
7 4.0%
Still unwell when reported
55 31%
Died
44 25%
Euthanised
42 24%
Not known
27 15%

Problems reported at the same time

Age of the animals

Under 1 year
16
1–3 years
17
4–7 years
46
8–11 years
58
12+ years
38

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 leucocytosis in dogs?
175 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 4 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).

Leucocytosis with similar medicines

All reported side effects of Cefovecin in dogs · Medicines most reported with leucocytosis