Low platelet count after Cefovecin (Convenia) in dogs

The FDA has received 38 reports of low platelet count in dogs after Cefovecin. That is 1.0% of all reports for this medicine, compared with 0.2% across reports for all dog medicines, so it is reported unusually often with this medicine.

38Reports

82%Marked serious

7.9%Recovered

45%Died or euthanised

4 daysTypical onset

How soon it started

Same day

7 23%

1–2 days

5 16%

3–7 days

8 26%

1–4 weeks

4 13%

Over a month

7 23%

How the animals did

Recovered

3 7.9%

Still unwell when reported

17 45%

Died

8 21%

Euthanised

9 24%

Not known

1 2.6%

Problems reported at the same time

21 55%

19 50%

18 47%

16 42%

15 39%

14 37%

13 34%

10 26%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

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 low platelet count in dogs?: 38 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).

Low platelet count with similar medicines

Low platelet count after Amoxicillin + Clavulanate (Clavamox) 64 reports · 1.2% of its reports
Low platelet count after Doxycycline 112 reports · 2.8% of its reports
Low platelet count after Enrofloxacin (Baytril) 74 reports · 2.0% of its reports
Low platelet count after Metronidazole 63 reports · 2.0% of its reports
Low platelet count after Amoxicillin 24 reports · 1.8% of its reports

All reported side effects of Cefovecin in dogs · Medicines most reported with low platelet count