Loose stool after Melarsomine (Immiticide) in dogs

126 reports to the FDA describe loose stool in dogs given Melarsomine. That is 0.6% of all reports for this medicine, compared with 0.9% across reports for all dog medicines, so it is reported less often than average with this medicine.

126Reports
41%Marked serious
14%Recovered
4.0%Died or euthanised
10 daysTypical onset
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How soon it started

Same day
17 26%
1–2 days
7 11%
3–7 days
6 9.2%
1–4 weeks
13 20%
Over a month
22 34%

How the animals did

Recovered
18 14%
Still unwell when reported
28 22%
Died
3 2.4%
Euthanised
2 1.6%
Not known
75 60%

Problems reported at the same time

Age of the animals

Under 1 year
1
1–3 years
63
4–7 years
38
8–11 years
19
12+ years
2

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 loose stool in dogs?
126 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 10 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).

Loose stool with similar medicines

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