Lethargy after Hydromorphone in dogs

173 reports to the FDA describe lethargy in dogs given Hydromorphone. That is 16% of all reports for this medicine, compared with 11% across reports for all dog medicines.

173Reports
75%Marked serious
24%Recovered
35%Died or euthanised
3 daysTypical onset
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How soon it started

Same day
31 19%
1–2 days
44 27%
3–7 days
37 23%
1–4 weeks
34 21%
Over a month
15 9.3%

How the animals did

Recovered
41 24%
Recovered with lasting effects
1 0.6%
Still unwell when reported
48 28%
Died
14 8.1%
Euthanised
46 27%
Not known
23 13%

Problems reported at the same time

Age of the animals

Under 1 year
15
1–3 years
51
4–7 years
55
8–11 years
42
12+ years
9

About this medicine

Type: medicine.

Questions owners ask

Can Hydromorphone cause lethargy in dogs?
173 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 3 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).

Lethargy with similar medicines

All reported side effects of Hydromorphone in dogs · Medicines most reported with lethargy