Excessive urination after Amoxicillin in dogs

53 reports to the FDA describe excessive urination in dogs given Amoxicillin. That is 3.9% of all reports for this medicine, compared with 1.0% across reports for all dog medicines, so it is reported unusually often with this medicine.

53Reports
70%Marked serious
5.7%Recovered
13%Died or euthanised
25 daysTypical onset
SponsoredWorried about your pet? Ask a veterinarian online, 24/7

How soon it started

Same day
4 11%
1–2 days
2 5.6%
3–7 days
6 17%
1–4 weeks
10 28%
Over a month
14 39%

How the animals did

Recovered
3 5.7%
Still unwell when reported
30 57%
Died
4 7.5%
Euthanised
3 5.7%
Not known
13 25%

Problems reported at the same time

Age of the animals

Under 1 year
1
1–3 years
7
4–7 years
13
8–11 years
12
12+ years
20

About this medicine

Amoxicillin treats bacterial infections.

Questions owners ask

Can Amoxicillin cause excessive urination in dogs?
53 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 25 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).

Excessive urination with similar medicines

All reported side effects of Amoxicillin in dogs · Medicines most reported with excessive urination