Accidental exposure after Cephalexin in dogs

The FDA has received 166 reports of accidental exposure in dogs after Cephalexin. That is 6.2% of all reports for this medicine, compared with 1.5% across reports for all dog medicines, so it is reported unusually often with this medicine.

166Reports
16%Marked serious
33%Recovered
0.0%Died or euthanised
Same dayTypical onset
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How soon it started

Same day
102 85%
1–2 days
9 7.5%
3–7 days
4 3.3%
1–4 weeks
4 3.3%
Over a month
1 0.8%

How the animals did

Recovered
53 32%
Recovered with lasting effects
1 0.6%
Still unwell when reported
4 2.4%
Not known
108 65%

Problems reported at the same time

159 96%
138 83%
21 13%
10 6.0%
Crystalluria
7 4.2%

Age of the animals

Under 1 year
13
1–3 years
67
4–7 years
50
8–11 years
28
12+ years
5

About this medicine

Type: medicine.

Questions owners ask

Can Cephalexin cause accidental exposure in dogs?
166 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 the same day 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).

Accidental exposure with similar medicines

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