Didn't work as expected after Atinvicitinib in dogs

The FDA has received 189 reports of didn't work as expected in dogs after Atinvicitinib. That is 50% of all reports for this medicine, compared with 13% across reports for all dog medicines, so it is reported unusually often with this medicine.

189Reports
55%Marked serious
6.3%Recovered
1.1%Died or euthanised
1 daysTypical onset
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How soon it started

Same day
67 49%
1–2 days
9 6.6%
3–7 days
14 10%
1–4 weeks
38 28%
Over a month
9 6.6%

How the animals did

Recovered
12 6.3%
Still unwell when reported
146 77%
Died
1 0.5%
Euthanised
1 0.5%
Not known
29 15%

Problems reported at the same time

7 3.7%
6 3.2%
5 2.6%
Liver problems
4 2.1%
Fever
3 1.6%
Death
2 1.1%
Papilloma
2 1.1%

Age of the animals

Under 1 year
4
1–3 years
32
4–7 years
75
8–11 years
51
12+ years
6

About this medicine

Type: medicine.

Questions owners ask

Can Atinvicitinib cause didn't work as expected in dogs?
189 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).

Didn't work as expected with similar medicines

All reported side effects of Atinvicitinib in dogs · Medicines most reported with didn't work as expected