Diarrhea after Aspirin in dogs

34 reports to the FDA describe diarrhea in dogs given Aspirin. That is 19% of all reports for this medicine, compared with 8.4% across reports for all dog medicines, so it is reported unusually often with this medicine.

34Reports
71%Marked serious
18%Recovered
32%Died or euthanised
42 daysTypical onset
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How soon it started

Same day
2 8.7%
1–2 days
2 8.7%
3–7 days
3 13%
1–4 weeks
3 13%
Over a month
13 57%

How the animals did

Recovered
5 15%
Recovered with lasting effects
1 2.9%
Still unwell when reported
7 21%
Died
2 5.9%
Euthanised
9 26%
Not known
10 29%

Problems reported at the same time

Age of the animals

Under 1 year
0
1–3 years
2
4–7 years
0
8–11 years
10
12+ years
22

About this medicine

Type: medicine.

Questions owners ask

Can Aspirin cause diarrhea in dogs?
34 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 42 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).

Diarrhea with similar medicines

All reported side effects of Aspirin in dogs · Medicines most reported with diarrhea