Loss of appetite after Distemper-parvo Vaccine in dogs

The FDA has received 1,070 reports of loss of appetite in dogs after Distemper-parvo Vaccine. That is 17% 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.

1,070Reports
62%Marked serious
20%Recovered
20%Died or euthanised
2 daysTypical onset
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How soon it started

Same day
253 26%
1–2 days
249 26%
3–7 days
150 16%
1–4 weeks
174 18%
Over a month
138 14%

How the animals did

Recovered
201 19%
Recovered with lasting effects
13 1.2%
Still unwell when reported
474 44%
Died
100 9.3%
Euthanised
118 11%
Not known
164 15%

Problems reported at the same time

674 63%
572 53%
335 31%
215 20%
150 14%

Age of the animals

Under 1 year
353
1–3 years
219
4–7 years
254
8–11 years
158
12+ years
81

About this medicine

Type: vaccine.

Mild, short-lived lethargy, soreness or a small lump at the injection site are the most commonly reported vaccine reactions.

Questions owners ask

Can Distemper-parvo Vaccine cause loss of appetite in dogs?
1,070 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 2 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 Distemper-parvo Vaccine in dogs · Medicines most reported with loss of appetite