Chlorpheniramine Maleate side effects in dogs

87 reports sent to the FDA between 2011 and 2019 involve Chlorpheniramine Maleate in dogs. The most reported problems were vomiting, lethargy, seizures. 33% were marked serious.

87Reports
33%Marked serious
0.0%Only medicine involved
67%Recovered
2.3%Died or euthanised
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About this medicine

Type: medicine.

Most reported side effects

42 48%
20 23%
Seizures
11 13%
Itching
9 10%
Loss of appetite
7 8.0%
Tremors
6 6.9%
Breathing problems
5 5.7%
Behaviour change
5 5.7%
Disorientation
5 5.7%
Diarrhea
4 4.6%
Cough
4 4.6%
Malaise
4 4.6%
Wheezing
3 3.4%
Skin rash or irritation
3 3.4%
Skin redness
3 3.4%

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 worms
4 4.6%
Didn't work as expected
3 3.4%
Didn't stop fleas
3 3.4%
Didn't prevent heartworm
1 1.1%

How soon problems started

Same day
7 13%
1–2 days
1 1.9%
3–7 days
1 1.9%
1–4 weeks
6 11%
Over a month
38 72%

Time from the first dose to the first sign, where both dates were reported (53 reports).

How the animals did

Recovered
48 55%
Recovered with lasting effects
10 11%
Still unwell when reported
6 6.9%
Died
2 2.3%
Not known
21 24%

Breeds named most often

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

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