Lethargy after Acepromazine in cats

The FDA has received 61 reports of lethargy in cats after Acepromazine. That is 10% of all reports for this medicine, compared with 14% across reports for all cat medicines.

61Reports
69%Marked serious
18%Recovered
31%Died or euthanised
1 daysTypical onset
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How soon it started

Same day
14 30%
1–2 days
22 47%
3–7 days
3 6.4%
1–4 weeks
3 6.4%
Over a month
5 11%

How the animals did

Recovered
11 18%
Still unwell when reported
15 25%
Died
9 15%
Euthanised
10 16%
Not known
16 26%

Problems reported at the same time

18 30%
12 20%
Dehydration
9 15%
Blood problems
9 15%

Age of the animals

Under 1 year
19
1–3 years
6
4–7 years
7
8–11 years
10
12+ years
19

About this medicine

Type: medicine.

Questions owners ask

Can Acepromazine cause lethargy in cats?
61 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 1 day 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).

Lethargy with similar medicines

All reported side effects of Acepromazine in cats · Medicines most reported with lethargy