Weakness after Amantadine in dogs

71 reports to the FDA describe weakness in dogs given Amantadine. That is 14% of all reports for this medicine, compared with 1.4% across reports for all dog medicines, so it is reported unusually often with this medicine.

71Reports
77%Marked serious
7.0%Recovered
42%Died or euthanised
19 daysTypical onset
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How soon it started

Same day
6 10%
1–2 days
10 17%
3–7 days
3 5.0%
1–4 weeks
16 27%
Over a month
25 42%

How the animals did

Recovered
5 7.0%
Still unwell when reported
31 44%
Died
6 8.5%
Euthanised
24 34%
Not known
5 7.0%

Problems reported at the same time

Age of the animals

Under 1 year
0
1–3 years
0
4–7 years
1
8–11 years
27
12+ years
43

About this medicine

Type: medicine.

Questions owners ask

Can Amantadine cause weakness in dogs?
71 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 19 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).

Weakness with similar medicines

All reported side effects of Amantadine in dogs · Medicines most reported with weakness