Pyriproxyfen side effects in cats

60 reports sent to the FDA between 2012 and 2026 involve Pyriproxyfen in cats. The most reported problems were vomiting, behaviour change, lethargy. 30% were marked serious.

60Reports
30%Marked serious
0.0%Only medicine involved
35%Recovered
10%Died or euthanised
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About this medicine

Type: medicine.

Most reported side effects

Vomiting
16 27%
Behaviour change
12 20%
Lethargy
10 17%
Drooling
9 15%
Hiding
8 13%
Restlessness or agitation
6 10%
Breathing problems
6 10%
Itching
4 6.7%
Diarrhea
4 6.7%
Licking
4 6.7%
Application site reaction
4 6.7%
Vocalising
3 5.0%
Wobbliness (ataxia)
3 5.0%
Hair loss
3 5.0%
Loss of appetite
3 5.0%

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 cat still getting fleas or heartworm), not about a side effect.

Didn't stop fleas
12 20%
Didn't work as expected
3 5.0%
Didn't stop mites
1 1.7%

How soon problems started

Same day
10 19%
1–2 days
8 15%
3–7 days
16 30%
1–4 weeks
10 19%
Over a month
10 19%

Time from the first dose to the first sign, where both dates were reported (54 reports).

How the animals did

Recovered
19 32%
Recovered with lasting effects
2 3.3%
Still unwell when reported
5 8.3%
Died
3 5.0%
Euthanised
3 5.0%
Not known
28 47%

Breeds named most often

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

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