Pale mucous membrane after Ondansetron in dogs

43 reports to the FDA describe pale mucous membrane in dogs given Ondansetron. That is 6.5% of all reports for this medicine, compared with 0.7% across reports for all dog medicines, so it is reported unusually often with this medicine.

43Reports
98%Marked serious
4.7%Recovered
65%Died or euthanised
3 daysTypical onset
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How soon it started

Same day
11 27%
1–2 days
8 20%
3–7 days
6 15%
1–4 weeks
6 15%
Over a month
10 24%

How the animals did

Recovered
2 4.7%
Still unwell when reported
12 28%
Died
10 23%
Euthanised
18 42%
Not known
1 2.3%

Problems reported at the same time

Age of the animals

Under 1 year
6
1–3 years
7
4–7 years
9
8–11 years
18
12+ years
3

About this medicine

Type: medicine.

Questions owners ask

Can Ondansetron cause pale mucous membrane in dogs?
43 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).

Pale mucous membrane with similar medicines

All reported side effects of Ondansetron in dogs · Medicines most reported with pale mucous membrane