Bruising after Melarsomine (Immiticide) in dogs

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

37Reports
59%Marked serious
8.1%Recovered
14%Died or euthanised
25 daysTypical onset
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How soon it started

Same day
3 13%
1–2 days
2 8.7%
3–7 days
2 8.7%
1–4 weeks
7 30%
Over a month
9 39%

How the animals did

Recovered
2 5.4%
Recovered with lasting effects
1 2.7%
Still unwell when reported
14 38%
Died
4 11%
Euthanised
1 2.7%
Not known
15 41%

Problems reported at the same time

Age of the animals

Under 1 year
0
1–3 years
15
4–7 years
14
8–11 years
5
12+ years
1

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 bruising in dogs?
37 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 25 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).

Bruising with similar medicines

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