Vomiting after Methadone in dogs

The FDA has received 47 reports of vomiting in dogs after Methadone. That is 20% of all reports for this medicine, compared with 28% across reports for all dog medicines.

47Reports
83%Marked serious
17%Recovered
32%Died or euthanised
3 daysTypical onset
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How soon it started

Same day
6 14%
1–2 days
15 34%
3–7 days
5 11%
1–4 weeks
4 9.1%
Over a month
14 32%

How the animals did

Recovered
8 17%
Still unwell when reported
15 32%
Died
1 2.1%
Euthanised
14 30%
Not known
9 19%

Problems reported at the same time

Age of the animals

Under 1 year
2
1–3 years
13
4–7 years
12
8–11 years
15
12+ years
3

About this medicine

Type: medicine.

Questions owners ask

Can Methadone cause vomiting in dogs?
47 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).

Vomiting with similar medicines

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