Pale mucous membrane after Cefovecin (Convenia) in cats

The FDA has received 223 reports of pale mucous membrane in cats after Cefovecin. That is 2.6% of all reports for this medicine, compared with 0.6% across reports for all cat medicines, so it is reported unusually often with this medicine.

223Reports

61%Marked serious

6.7%Recovered

51%Died or euthanised

2 daysTypical onset

How soon it started

Same day

48 30%

1–2 days

33 20%

3–7 days

32 20%

1–4 weeks

34 21%

Over a month

14 8.7%

How the animals did

Recovered

15 6.7%

Still unwell when reported

58 26%

Died

63 28%

Euthanised

50 22%

Not known

37 17%

Problems reported at the same time

132 59%

127 57%

115 52%

111 50%

64 29%

58 26%

52 23%

47 21%

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 pale mucous membrane in cats?: 223 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).

Pale mucous membrane with similar medicines

Pale mucous membrane after Amoxicillin + Clavulanate (Clavamox) 45 reports · 1.9% of its reports

All reported side effects of Cefovecin in cats · Medicines most reported with pale mucous membrane