Antihistamines side effects in dogs

108 reports sent to the FDA between 2012 and 2022 involve Antihistamines in dogs. The most reported problems were vomiting, liver problems, diarrhea. 33% were marked serious.

108Reports
33%Marked serious
0.0%Only medicine involved
7.4%Recovered
3.7%Died or euthanised
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About this medicine

Type: medicine.

Most reported side effects

Vomiting
17 16%
Liver problems
11 10%
Diarrhea
11 10%
Lethargy
10 9.3%
Swelling
9 8.3%
Allergic reaction
8 7.4%
Skin redness
7 6.5%
Itching
6 5.6%
Excessive urination
5 4.6%
Behaviour change
5 4.6%
Seizures
5 4.6%
Kidney problems
5 4.6%
Hypoalbuminaemia
5 4.6%
Inappropriate schedule of drug administration
5 4.6%
Lameness
4 3.7%

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 stop fleas
1 0.9%

How soon problems started

Same day
17 24%
1–2 days
3 4.3%
3–7 days
10 14%
1–4 weeks
11 16%
Over a month
29 41%

Time from the first dose to the first sign, where both dates were reported (70 reports).

How the animals did

Recovered
8 7.4%
Still unwell when reported
78 72%
Died
1 0.9%
Euthanised
3 2.8%
Not known
18 17%

Breeds named most often

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

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