Hyperglycaemia after Melarsomine (Immiticide) in dogs

150 reports to the FDA describe hyperglycaemia in dogs given Melarsomine. That is 0.7% of all reports for this medicine, compared with 0.5% across reports for all dog medicines.

150Reports
61%Marked serious
10%Recovered
17%Died or euthanised
21 daysTypical onset
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How soon it started

Same day
10 11%
1–2 days
5 5.4%
3–7 days
23 25%
1–4 weeks
16 17%
Over a month
38 41%

How the animals did

Recovered
14 9.3%
Recovered with lasting effects
1 0.7%
Still unwell when reported
37 25%
Died
18 12%
Euthanised
8 5.3%
Not known
72 48%

Problems reported at the same time

Age of the animals

Under 1 year
2
1–3 years
59
4–7 years
60
8–11 years
24
12+ years
4

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 hyperglycaemia in dogs?
150 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 21 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).

Hyperglycaemia with similar medicines

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