Apnoea after Melarsomine (Immiticide) in dogs

The FDA has received 25 reports of apnoea in dogs after Melarsomine. That is 0.1% of all reports for this medicine, compared with 0.2% across reports for all dog medicines.

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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 apnoea in dogs?

25 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.

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).

Apnoea with similar medicines

• Apnoea after Butorphanol 112 reports · 2.5% of its reports
• Apnoea after Propofol 226 reports · 7.4% of its reports
• Apnoea after Isoflurane 140 reports · 5.1% of its reports
• Apnoea after Atipamezole 78 reports · 2.9% of its reports
• Apnoea after Medetomidine 120 reports · 5.6% of its reports
• Apnoea after Ketamine 89 reports · 4.7% of its reports
• Apnoea after Acepromazine 46 reports · 2.6% of its reports
• Apnoea after Tiletamine + Zolazepam 91 reports · 6.3% of its reports
• Apnoea after Midazolam 29 reports · 2.4% of its reports
• Apnoea after Hydromorphone 31 reports · 2.9% of its reports

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