Underdose after Melarsomine (Immiticide) in dogs

The FDA has received 218 reports of underdose in dogs after Melarsomine. That is 1.0% of all reports for this medicine, compared with 1.0% across reports for all dog medicines.

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How soon it started

How the animals did

Problems reported at the same time

Age of the animals

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 underdose in dogs?

218 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 62 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).

Underdose with similar medicines

• Underdose after Polysulfated Glycosaminoglycan 25 reports · 0.5% of its reports
• Underdose after Diphenhydramine 60 reports · 1.3% of its reports
• Underdose after Butorphanol 119 reports · 2.7% of its reports
• Underdose after Cefpodoxime 51 reports · 1.3% of its reports
• Underdose after Tramadol 57 reports · 1.5% of its reports
• Underdose after Desoxycorticosterone Pivalate 79 reports · 2.4% of its reports
• Underdose after Propofol 37 reports · 1.2% of its reports
• Underdose after Isoflurane 43 reports · 1.6% of its reports
• Underdose after Cephalexin 37 reports · 1.4% of its reports
• Underdose after Atipamezole 82 reports · 3.1% of its reports

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