Skin rash or irritation after S-methoprene in dogs

28 reports to the FDA describe skin rash or irritation in dogs given S-methoprene. That is 1.7% of all reports for this medicine, compared with 1.3% across reports for all dog medicines.

28Reports
0.0%Marked serious
0.0%Recovered
0.0%Died or euthanised
–Typical onset
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How the animals did

Still unwell when reported
1 3.6%
Not known
27 96%

Problems reported at the same time

10 36%
8 29%
Skin haematoma
4 14%
Pyoderma
2 7.1%
Excessive urination
1 3.6%

Age of the animals

Under 1 year
6
1–3 years
14
4–7 years
3
8–11 years
2
12+ years
1

About this medicine

Type: medicine.

Questions owners ask

Can S-methoprene cause skin rash or irritation in dogs?
28 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).

Skin rash or irritation with similar medicines

All reported side effects of S-methoprene in dogs · Medicines most reported with skin rash or irritation