Disorientation after Phenobarbital in dogs

The FDA has received 51 reports of disorientation in dogs after Phenobarbital. That is 3.3% of all reports for this medicine, compared with 1.0% across reports for all dog medicines, so it is reported unusually often with this medicine.

51Reports
75%Marked serious
33%Recovered
25%Died or euthanised
2 daysTypical onset
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How soon it started

Same day
15 39%
1–2 days
6 16%
3–7 days
3 7.9%
1–4 weeks
5 13%
Over a month
9 24%

How the animals did

Recovered
15 29%
Recovered with lasting effects
2 3.9%
Still unwell when reported
13 25%
Died
5 9.8%
Euthanised
8 16%
Not known
8 16%

Problems reported at the same time

Age of the animals

Under 1 year
5
1–3 years
4
4–7 years
14
8–11 years
10
12+ years
16

About this medicine

Type: medicine.

Questions owners ask

Can Phenobarbital cause disorientation in dogs?
51 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 2 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).

Disorientation with similar medicines

All reported side effects of Phenobarbital in dogs · Medicines most reported with disorientation