Breathing problems after Ivermectin (Heartgard) in dogs
345 reports to the FDA describe breathing problems in dogs given Ivermectin. That is 2.9% of all reports for this medicine, compared with 2.7% across reports for all dog medicines.
345Reports
51%Marked serious
28%Recovered
21%Died or euthanised
31 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 breathing problems in dogs?
- 345 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 31 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).
Breathing problems with similar medicines
- Breathing problems after Ivermectin + Pyrantel (Heartgard Plus) 1,458 reports · 1.0% of its reports
- Breathing problems after Milbemycin Oxime + Spinosad (Trifexis) 2,380 reports · 1.8% of its reports
- Breathing problems after Moxidectin (ProHeart 6) 2,372 reports · 4.7% of its reports
- Breathing problems after Milbemycin Oxime + Praziquantel (Interceptor Plus) 556 reports · 1.8% of its reports
- Breathing problems after Milbemycin Oxime (Interceptor) 481 reports · 1.6% of its reports
- Breathing problems after Selamectin (Revolution) 465 reports · 1.6% of its reports
- Breathing problems after Ivermectin + Praziquantel + Pyrantel (Iverhart Max) 231 reports · 2.7% of its reports
- Breathing problems after Moxidectin + Pyrantel + Sarolaner (Simparica Trio) 40 reports · 3.4% of its reports
All reported side effects of Ivermectin in dogs · Medicines most reported with breathing problems