Acetylsalicylic Acid side effects in dogs

156 reports sent to the FDA between 2012 and 2026 involve Acetylsalicylic Acid in dogs. The most reported problems were loss of appetite, lethargy, vomiting. 56% were marked serious.

156Reports
56%Marked serious
0.0%Only medicine involved
12%Recovered
38%Died or euthanised
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About this medicine

Type: medicine.

Most reported side effects

58 37%
58 37%
28 18%
Weakness
15 9.6%
Leucocytosis
15 9.6%
Pale mucous membrane
15 9.6%
Behaviour change
14 9.0%
Weight loss
13 8.3%
Fever
13 8.3%
Neutrophilia
12 7.7%

Share = percentage of this medicine's reports that mention the problem. One report can list several problems.

Reports that it didn't work

Some reports are about the medicine not working (for example a dog still getting fleas or heartworm), not about a side effect.

Didn't work as expected
5 3.2%
Didn't stop worms
1 0.6%
Didn't stop fleas
1 0.6%
Didn't stop ticks
1 0.6%
Didn't prevent heartworm
1 0.6%

How soon problems started

Same day
26 19%
1–2 days
25 19%
3–7 days
29 21%
1–4 weeks
34 25%
Over a month
21 16%

Time from the first dose to the first sign, where both dates were reported (135 reports).

How the animals did

Recovered
18 12%
Still unwell when reported
64 41%
Died
33 21%
Euthanised
27 17%
Not known
14 9.0%

Breeds named most often

Popular breeds appear more often because there are more of them.

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