Dehydration after Cefovecin (Convenia) in cats

The FDA has received 436 reports of dehydration in cats after Cefovecin. That is 5.0% of all reports for this medicine, compared with 2.0% across reports for all cat medicines, so it is reported unusually often with this medicine.

436Reports

58%Marked serious

9.4%Recovered

43%Died or euthanised

2 daysTypical onset

How soon it started

Same day

78 24%

1–2 days

89 28%

3–7 days

68 21%

1–4 weeks

60 19%

Over a month

26 8.1%

How the animals did

Recovered

41 9.4%

Still unwell when reported

131 30%

Died

106 24%

Euthanised

80 18%

Not known

78 18%

Problems reported at the same time

321 74%

245 56%

182 42%

147 34%

144 33%

142 33%

118 27%

99 23%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

158

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 dehydration in cats?: 436 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).

Dehydration with similar medicines

Dehydration after Amoxicillin + Clavulanate (Clavamox) 108 reports · 4.5% of its reports
Dehydration after Enrofloxacin (Baytril) 49 reports · 3.1% of its reports
Dehydration after Metronidazole 28 reports · 7.1% of its reports

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