Weakness after Cefovecin (Convenia) in dogs

130 reports to the FDA describe weakness in dogs given Cefovecin. That is 3.4% of all reports for this medicine, compared with 1.4% across reports for all dog medicines, so it is reported unusually often with this medicine.

130Reports
62%Marked serious
11%Recovered
42%Died or euthanised
2 daysTypical onset
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How soon it started

Same day
36 33%
1–2 days
27 25%
3–7 days
10 9.3%
1–4 weeks
19 18%
Over a month
16 15%

How the animals did

Recovered
13 10%
Recovered with lasting effects
1 0.8%
Still unwell when reported
44 34%
Died
37 28%
Euthanised
18 14%
Not known
17 13%

Problems reported at the same time

Age of the animals

Under 1 year
12
1–3 years
14
4–7 years
31
8–11 years
37
12+ years
33

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 weakness in dogs?
130 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 2 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).

Weakness with similar medicines

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