Ear infection after Ivermectin (Heartgard) in dogs
36 reports to the FDA describe ear infection in dogs given Ivermectin. That is 0.3% of all reports for this medicine, compared with 0.2% across reports for all dog medicines.
36Reports
28%Marked serious
5.6%Recovered
2.8%Died or euthanised
84 daysTypical onset
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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
Ivermectin prevents heartworm disease (monthly).
Products with this ingredient include Heartgard. 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 Ivermectin cause ear infection in dogs?
- 36 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 84 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).
Ear infection with similar medicines
- Ear infection after Ivermectin + Pyrantel (Heartgard Plus) 116 reports · 0.1% of its reports
- Ear infection after Milbemycin Oxime + Spinosad (Trifexis) 524 reports · 0.4% of its reports
- Ear infection after Moxidectin (ProHeart 6) 34 reports · 0.1% of its reports
- Ear infection after Milbemycin Oxime + Praziquantel (Interceptor Plus) 206 reports · 0.7% of its reports
- Ear infection after Milbemycin Oxime (Interceptor) 36 reports · 0.1% of its reports
All reported side effects of Ivermectin in dogs · Medicines most reported with ear infection