Malaise after Melarsomine (Immiticide) in dogs

59 reports to the FDA describe malaise in dogs given Melarsomine. That is 0.3% of all reports for this medicine, compared with 0.4% across reports for all dog medicines.

59Reports
54%Marked serious
12%Recovered
14%Died or euthanised
14 daysTypical onset
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How soon it started

Same day
9 23%
1–2 days
5 13%
3–7 days
2 5.0%
1–4 weeks
10 25%
Over a month
14 35%

How the animals did

Recovered
6 10%
Recovered with lasting effects
1 1.7%
Still unwell when reported
17 29%
Died
7 12%
Euthanised
1 1.7%
Not known
27 46%

Problems reported at the same time

Age of the animals

Under 1 year
0
1–3 years
28
4–7 years
20
8–11 years
8
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 malaise in dogs?
59 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 14 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).

Malaise with similar medicines

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