Discoloured urine after Famotidine in dogs

31 reports to the FDA describe discoloured urine in dogs given Famotidine. That is 1.2% of all reports for this medicine, compared with 0.1% across reports for all dog medicines, so it is reported unusually often with this medicine.

31Reports

71%Marked serious

9.7%Recovered

58%Died or euthanised

14 daysTypical onset

How soon it started

Same day

2 8.0%

1–2 days

5 20%

3–7 days

3 12%

1–4 weeks

9 36%

Over a month

6 24%

How the animals did

Recovered

3 9.7%

Still unwell when reported

9 29%

Died

7 23%

Euthanised

11 35%

Not known

1 3.2%

Problems reported at the same time

21 68%

21 68%

19 61%

19 61%

18 58%

15 48%

11 35%

10 32%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

About this medicine

Type: medicine.

Questions owners ask

Can Famotidine cause discoloured urine in dogs?: 31 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 14 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).

Discoloured urine with similar medicines

Discoloured urine after Melarsomine (Immiticide) 63 reports · 0.3% of its reports
Discoloured urine after Butorphanol 23 reports · 0.5% of its reports
Discoloured urine after Cefpodoxime 27 reports · 0.7% of its reports
Discoloured urine after Tramadol 26 reports · 0.7% of its reports
Discoloured urine after Sucralfate 22 reports · 2.2% of its reports

All reported side effects of Famotidine in dogs · Medicines most reported with discoloured urine