Vincristine side effects in dogs

53 reports sent to the FDA between 2000 and 2025 involve Vincristine in dogs. The most reported problems were loss of appetite, blood problems, vomiting. 77% were marked serious, and where it was recorded, signs eased after stopping the medicine in 100% of cases.

53Reports
77%Marked serious
5.7%Only medicine involved
7.5%Recovered
47%Died or euthanised
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About this medicine

Type: medicine.

Most reported side effects

23 43%
22 42%
Liver problems
19 36%
Leucocytosis
15 28%
Diarrhea
13 25%
Bruising
10 19%
Neutrophilia
9 17%
Low platelet count
9 17%
Kidney problems
8 15%
Weight loss
7 13%
Blood in stool
7 13%
Breathing problems
6 11%
Swelling
6 11%

Share = percentage of this medicine's reports that mention the problem. One report can list several problems.

Reports that it didn't work

Some reports are about the medicine not working (for example a dog still getting fleas or heartworm), not about a side effect.

Didn't work as expected
6 11%

How soon problems started

Same day
6 15%
1–2 days
2 4.9%
3–7 days
5 12%
1–4 weeks
15 37%
Over a month
13 32%

Time from the first dose to the first sign, where both dates were reported (41 reports).

How the animals did

Recovered
4 7.5%
Still unwell when reported
17 32%
Died
10 19%
Euthanised
15 28%
Not known
7 13%

Breeds named most often

Popular breeds appear more often because there are more of them.

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