Loss of appetite after Leptospirosis Vaccine in dogs

The FDA has received 1,329 reports of loss of appetite in dogs after Leptospirosis 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.

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How soon it started

How the animals did

Problems reported at the same time

Age of the animals

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 Leptospirosis Vaccine cause loss of appetite in dogs?

1,329 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

• Loss of appetite after Rabies Vaccine 1,569 reports · 16% of its reports
• Loss of appetite after Bordetella Vaccine 1,553 reports · 17% of its reports
• Loss of appetite after Lyme Vaccine 382 reports · 5.5% of its reports
• Loss of appetite after Distemper-parvo Vaccine 1,070 reports · 17% of its reports

All reported side effects of Leptospirosis Vaccine in dogs · Medicines most reported with loss of appetite