Vomiting after Chlorphenamine in dogs

50 reports to the FDA describe vomiting in dogs given Chlorphenamine. That is 66% of all reports for this medicine, compared with 28% across reports for all dog medicines, so it is reported unusually often with this medicine.

50Reports
18%Marked serious
84%Recovered
2.0%Died or euthanised
97 daysTypical onset
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How soon it started

Same day
4 13%
1–2 days
1 3.3%
3–7 days
1 3.3%
1–4 weeks
2 6.7%
Over a month
22 73%

How the animals did

Recovered
38 76%
Recovered with lasting effects
4 8.0%
Still unwell when reported
4 8.0%
Died
1 2.0%
Not known
3 6.0%

Problems reported at the same time

Lethargy
9 18%
Loss of appetite
3 6.0%
Diarrhea
3 6.0%
Cataract
3 6.0%
Tremors
2 4.0%
Weight gain
2 4.0%
Behaviour change
2 4.0%
Breathing problems
2 4.0%

Age of the animals

Under 1 year
5
1–3 years
13
4–7 years
22
8–11 years
6
12+ years
4

About this medicine

Type: medicine.

Questions owners ask

Can Chlorphenamine cause vomiting in dogs?
50 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 97 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).

Vomiting with similar medicines

All reported side effects of Chlorphenamine in dogs · Medicines most reported with vomiting