Neutrophilia after Cefovecin (Convenia) in cats

197 reports to the FDA describe neutrophilia in cats given Cefovecin. That is 2.3% of all reports for this medicine, compared with 0.7% across reports for all cat medicines, so it is reported unusually often with this medicine.

197Reports

63%Marked serious

8.6%Recovered

36%Died or euthanised

2 daysTypical onset

How soon it started

Same day

40 26%

1–2 days

44 28%

3–7 days

28 18%

1–4 weeks

24 15%

Over a month

19 12%

How the animals did

Recovered

15 7.6%

Recovered with lasting effects

2 1.0%

Still unwell when reported

73 37%

Died

30 15%

Euthanised

40 20%

Not known

37 19%

Problems reported at the same time

116 59%

95 48%

91 46%

69 35%

64 32%

62 31%

58 29%

54 27%

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 neutrophilia in cats?: 197 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).

Neutrophilia with similar medicines

Neutrophilia after Amoxicillin + Clavulanate (Clavamox) 44 reports · 1.8% of its reports
Neutrophilia after Enrofloxacin (Baytril) 28 reports · 1.8% of its reports

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