Overdose after Melarsomine (Immiticide) in dogs

117 reports to the FDA describe overdose in dogs given Melarsomine. That is 0.5% of all reports for this medicine, compared with 1.3% across reports for all dog medicines, so it is reported less often than average with this medicine.

117Reports

63%Marked serious

17%Recovered

2.6%Died or euthanised

11 daysTypical onset

How soon it started

Same day

28 32%

1–2 days

9 10%

3–7 days

4 4.6%

1–4 weeks

16 18%

Over a month

30 34%

How the animals did

Recovered

14 12%

Recovered with lasting effects

6 5.1%

Still unwell when reported

47 40%

Died

1 0.9%

Euthanised

2 1.7%

Not known

47 40%

Problems reported at the same time

Didn't prevent heartworm

44 38%

Lethargy

21 18%

Injection site reaction

20 17%

16 14%

14 12%

14 12%

13 11%

9 7.7%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

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 overdose in dogs?: 117 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 11 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).

Overdose with similar medicines

Overdose after Polysulfated Glycosaminoglycan 25 reports · 0.5% of its reports
Overdose after Diphenhydramine 52 reports · 1.1% of its reports
Overdose after Butorphanol 53 reports · 1.2% of its reports
Overdose after Cefpodoxime 39 reports · 1.0% of its reports
Overdose after Tramadol 45 reports · 1.2% of its reports
Overdose after Propofol 38 reports · 1.2% of its reports
Overdose after Isoflurane 25 reports · 0.9% of its reports
Overdose after Cephalexin 189 reports · 7.1% of its reports
Overdose after Atipamezole 39 reports · 1.5% of its reports
Overdose after Famotidine 44 reports · 1.7% of its reports

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