Blood problems after Melarsomine (Immiticide) in dogs

513 reports to the FDA describe blood problems in dogs given Melarsomine. That is 2.3% of all reports for this medicine, compared with 1.8% across reports for all dog medicines.

513Reports

41%Marked serious

3.7%Recovered

18%Died or euthanised

17 daysTypical onset

How soon it started

Same day

23 9.6%

1–2 days

25 10%

3–7 days

35 15%

1–4 weeks

71 30%

Over a month

86 36%

How the animals did

Recovered

18 3.5%

Recovered with lasting effects

1 0.2%

Still unwell when reported

118 23%

Died

62 12%

Euthanised

29 5.7%

Not known

285 56%

Problems reported at the same time

191 37%

185 36%

176 34%

123 24%

116 23%

111 22%

86 17%

83 16%

Age of the animals

Under 1 year

1–3 years

207

4–7 years

195

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 blood problems in dogs?: 513 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 17 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).

Blood problems with similar medicines

Blood problems after Polysulfated Glycosaminoglycan 284 reports · 5.2% of its reports
Blood problems after Diphenhydramine 267 reports · 5.7% of its reports
Blood problems after Butorphanol 162 reports · 3.6% of its reports
Blood problems after Cefpodoxime 279 reports · 6.9% of its reports
Blood problems after Tramadol 236 reports · 6.3% of its reports
Blood problems after Florfenicol + Mometasone + Terbinafine 39 reports · 1.1% of its reports
Blood problems after Desoxycorticosterone Pivalate 187 reports · 5.6% of its reports
Blood problems after Propofol 106 reports · 3.5% of its reports
Blood problems after Dirlotapide 46 reports · 1.6% of its reports
Blood problems after Isoflurane 101 reports · 3.7% of its reports

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