Unable to stand after Melarsomine (Immiticide) in dogs

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

68Reports
87%Marked serious
16%Recovered
13%Died or euthanised
7 daysTypical onset
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How soon it started

Same day
22 34%
1–2 days
5 7.7%
3–7 days
8 12%
1–4 weeks
12 18%
Over a month
18 28%

How the animals did

Recovered
11 16%
Still unwell when reported
29 43%
Died
4 5.9%
Euthanised
5 7.4%
Not known
19 28%

Problems reported at the same time

Vomiting
17 25%
Lethargy
17 25%
Swelling
13 19%
Breathing problems
13 19%
Weakness
12 18%
Loss of appetite
12 18%
Fever
11 16%
Liver problems
11 16%

Age of the animals

Under 1 year
1
1–3 years
27
4–7 years
25
8–11 years
10
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 unable to stand in dogs?
68 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 7 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).

Unable to stand with similar medicines

All reported side effects of Melarsomine in dogs · Medicines most reported with unable to stand