Vomiting after S-methoprene in dogs

The FDA has received 461 reports of vomiting in dogs after S-methoprene. That is 28% of all reports for this medicine, compared with 28% across reports for all dog medicines.

461Reports
0.2%Marked serious
1.1%Recovered
3.7%Died or euthanised
–Typical onset
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How the animals did

Recovered
5 1.1%
Still unwell when reported
1 0.2%
Died
17 3.7%
Not known
438 95%

Problems reported at the same time

Age of the animals

Under 1 year
130
1–3 years
161
4–7 years
82
8–11 years
24
12+ years
13

About this medicine

Type: medicine.

Questions owners ask

Can S-methoprene cause vomiting in dogs?
461 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).

Vomiting with similar medicines

All reported side effects of S-methoprene in dogs · Medicines most reported with vomiting