Loss of appetite after Vitamin K in dogs

63 reports to the FDA describe loss of appetite in dogs given Vitamin K. That is 47% of all reports for this medicine, compared with 8.4% across reports for all dog medicines, so it is reported unusually often with this medicine.

63Reports
94%Marked serious
11%Recovered
62%Died or euthanised
10 daysTypical onset
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How soon it started

Same day
7 12%
1–2 days
6 11%
3–7 days
11 19%
1–4 weeks
22 39%
Over a month
11 19%

How the animals did

Recovered
7 11%
Still unwell when reported
16 25%
Died
9 14%
Euthanised
30 48%
Not known
1 1.6%

Problems reported at the same time

45 71%
42 67%
40 63%
Hypoalbuminaemia
17 27%

Age of the animals

Under 1 year
1
1–3 years
14
4–7 years
25
8–11 years
18
12+ years
5

About this medicine

Type: medicine.

Questions owners ask

Can Vitamin K cause loss of appetite in dogs?
63 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 10 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).

Loss of appetite with similar medicines

All reported side effects of Vitamin K in dogs · Medicines most reported with loss of appetite