Febrile after Melarsomine (Immiticide) in dogs

55 reports to the FDA describe febrile in dogs given Melarsomine. That is 0.2% of all reports for this medicine, compared with 0.1% across reports for all dog medicines, so it is reported unusually often with this medicine.

55Reports

55%Marked serious

22%Recovered

15%Died or euthanised

9 daysTypical onset

How soon it started

Same day

13 25%

1–2 days

9 17%

3–7 days

2 3.8%

1–4 weeks

18 35%

Over a month

10 19%

How the animals did

Recovered

12 22%

Still unwell when reported

13 24%

Died

5 9.1%

Euthanised

3 5.5%

Not known

22 40%

Problems reported at the same time

23 42%

19 35%

16 29%

10 18%

8 15%

Injection site reaction

7 13%

Drooling

6 11%

Vomiting

6 11%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

About this medicine

Melarsomine treats adult heartworm infection (a series of injections given by a vet).

Products with this ingredient include Immiticide, Diroban. The FDA hides brand names in its public data, so these reports cover every product with the same active ingredients.

Questions owners ask

Can Melarsomine cause febrile in dogs?: 55 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.
How soon after a dose was it reported?: In half of the reports with dates, it started within 9 days of the first dose.
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).

Febrile with similar medicines

Febrile after Diphenhydramine 32 reports · 0.7% of its reports
Febrile after Cefpodoxime 21 reports · 0.5% of its reports
Febrile after Famotidine 29 reports · 1.1% of its reports

All reported side effects of Melarsomine in dogs · Medicines most reported with febrile