Swelling after Cephalexin in dogs

The FDA has received 127 reports of swelling in dogs after Cephalexin. That is 4.7% of all reports for this medicine, compared with 2.8% across reports for all dog medicines, so it is reported unusually often with this medicine.

127Reports
56%Marked serious
22%Recovered
22%Died or euthanised
7 daysTypical onset
SponsoredWorried about your pet? Ask a veterinarian online, 24/7

How soon it started

Same day
21 19%
1–2 days
18 17%
3–7 days
19 17%
1–4 weeks
20 18%
Over a month
31 28%

How the animals did

Recovered
24 19%
Recovered with lasting effects
4 3.1%
Still unwell when reported
57 45%
Died
13 10%
Euthanised
15 12%
Not known
14 11%

Problems reported at the same time

Age of the animals

Under 1 year
13
1–3 years
33
4–7 years
43
8–11 years
26
12+ years
10

About this medicine

Type: medicine.

Questions owners ask

Can Cephalexin cause swelling in dogs?
127 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 7 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).

Swelling with similar medicines

All reported side effects of Cephalexin in dogs · Medicines most reported with swelling