Bone and joint disorder after Moxidectin (ProHeart 6) in dogs

23 reports to the FDA describe bone and joint disorder in dogs given Moxidectin. That is 0.0% of all reports for this medicine, compared with 0.1% across reports for all dog medicines, so it is reported less often than average with this medicine.

23Reports
43%Marked serious
8.7%Recovered
13%Died or euthanised
–Typical onset
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How the animals did

Recovered with lasting effects
2 8.7%
Still unwell when reported
8 35%
Died
2 8.7%
Euthanised
1 4.3%
Not known
10 43%

Problems reported at the same time

Age of the animals

Under 1 year
0
1–3 years
4
4–7 years
6
8–11 years
8
12+ years
4

About this medicine

Moxidectin prevents heartworm disease (monthly topical, or a 6- or 12-month injection for dogs).

Products with this ingredient include ProHeart 6, ProHeart 12. The FDA hides brand names in its public data, so these reports cover every product with the same active ingredients.

Some herding breeds (for example Collies) carry the MDR1 gene variant and can be more sensitive to this drug class at high doses.

Questions owners ask

Can Moxidectin cause bone and joint disorder in dogs?
23 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).

Bone and joint disorder with similar medicines

All reported side effects of Moxidectin in dogs · Medicines most reported with bone and joint disorder