Vomiting after Phenobarbital in dogs

The FDA has received 261 reports of vomiting in dogs after Phenobarbital. That is 17% of all reports for this medicine, compared with 28% across reports for all dog medicines, so it is reported less often than average with this medicine.

261Reports
44%Marked serious
52%Recovered
13%Died or euthanised
31 daysTypical onset
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How soon it started

Same day
31 20%
1–2 days
16 11%
3–7 days
9 5.9%
1–4 weeks
19 13%
Over a month
77 51%

How the animals did

Recovered
123 47%
Recovered with lasting effects
12 4.6%
Still unwell when reported
55 21%
Died
13 5.0%
Euthanised
21 8.0%
Not known
37 14%

Problems reported at the same time

Age of the animals

Under 1 year
4
1–3 years
26
4–7 years
82
8–11 years
91
12+ years
53

About this medicine

Type: medicine.

Questions owners ask

Can Phenobarbital cause vomiting in dogs?
261 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 31 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 Phenobarbital in dogs · Medicines most reported with vomiting