Allergic reaction after Lufenuron in cats

The FDA has received 20 reports of allergic reaction in cats after Lufenuron. That is 1.8% of all reports for this medicine, compared with 0.9% across reports for all cat medicines, so it is reported unusually often with this medicine.

20Reports

15%Marked serious

10%Recovered

10%Died or euthanised

–Typical onset

How the animals did

Recovered

2 10%

Died

2 10%

Not known

16 80%

Problems reported at the same time

Vomiting

13 65%

Breathing problems

8 40%

Diarrhea

6 30%

Pale mucous membrane

4 20%

Collapse

4 20%

Death

3 15%

Swelling

3 15%

Recumbency

3 15%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

About this medicine

Lufenuron stops flea eggs from developing.

Questions owners ask

Can Lufenuron cause allergic reaction in cats?: 20 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.
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).

Allergic reaction with similar medicines

Allergic reaction after Spinosad (Comfortis) 22 reports · 0.2% of its reports
Allergic reaction after Nitenpyram (Capstar) 38 reports · 0.4% of its reports
Allergic reaction after Imidacloprid + Moxidectin (Advantage Multi) 35 reports · 0.4% of its reports

All reported side effects of Lufenuron in cats · Medicines most reported with allergic reaction