Pentoxifylline side effects in dogs

72 reports sent to the FDA between 2002 and 2026 involve Pentoxifylline in dogs. The most reported problems were loss of appetite, vomiting, diarrhea. 57% were marked serious.

72Reports
57%Marked serious
2.8%Only medicine involved
31%Recovered
15%Died or euthanised
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About this medicine

Type: medicine.

Most reported side effects

21 29%
Diarrhea
18 25%
Lethargy
18 25%
Hair loss
15 21%
Skin redness
14 19%
Liver problems
14 19%
Swelling
10 14%
Skin rash or irritation
10 14%
Itching
10 14%
Crust
9 13%
Weight loss
8 11%
Kidney problems
7 9.7%
Breathing problems
7 9.7%
Skin disorders
7 9.7%

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
11 15%
Didn't stop worms
2 2.8%
Didn't stop fleas
1 1.4%

How soon problems started

Same day
5 9.6%
1–2 days
3 5.8%
3–7 days
1 1.9%
1–4 weeks
10 19%
Over a month
33 63%

Time from the first dose to the first sign, where both dates were reported (52 reports).

How the animals did

Recovered
22 31%
Still unwell when reported
16 22%
Died
3 4.2%
Euthanised
8 11%
Not known
23 32%

Breeds named most often

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

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