Adipsia after Moxidectin (ProHeart 6) in dogs

147 reports to the FDA describe adipsia in dogs given Moxidectin. That is 0.3% of all reports for this medicine, compared with 0.4% across reports for all dog medicines.

147Reports
40%Marked serious
9.5%Recovered
21%Died or euthanised
1 daysTypical onset
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How soon it started

Same day
42 41%
1–2 days
31 30%
3–7 days
11 11%
1–4 weeks
13 13%
Over a month
6 5.8%

How the animals did

Recovered
14 9.5%
Still unwell when reported
67 46%
Died
20 14%
Euthanised
11 7.5%
Not known
35 24%

Problems reported at the same time

Age of the animals

Under 1 year
7
1–3 years
41
4–7 years
51
8–11 years
30
12+ years
14

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 adipsia in dogs?
147 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 1 day 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).

Adipsia with similar medicines

All reported side effects of Moxidectin in dogs · Medicines most reported with adipsia