Faecal incontinence after Melarsomine (Immiticide) in dogs

43 reports to the FDA describe faecal incontinence in dogs given Melarsomine. That is 0.2% of all reports for this medicine, compared with 0.1% across reports for all dog medicines.

43Reports

53%Marked serious

4.7%Recovered

4.7%Died or euthanised

3 daysTypical onset

How soon it started

Same day

11 42%

1–2 days

2 7.7%

3–7 days

4 15%

1–4 weeks

4 15%

Over a month

5 19%

How the animals did

Recovered

2 4.7%

Still unwell when reported

15 35%

Died

2 4.7%

Not known

24 56%

Problems reported at the same time

17 40%

13 30%

10 23%

10 23%

10 23%

10 23%

10 23%

8 19%

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 faecal incontinence in dogs?: 43 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 3 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).

Faecal incontinence with similar medicines

Faecal incontinence after Polysulfated Glycosaminoglycan 26 reports · 0.5% of its reports
Faecal incontinence after Tramadol 20 reports · 0.5% of its reports
Faecal incontinence after Estriol 28 reports · 1.4% of its reports

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