Accidental exposure after Ivermectin + Pyrantel (Heartgard Plus) in dogs
583 reports to the FDA describe accidental exposure in dogs given Ivermectin + Pyrantel. That is 0.4% of all reports for this medicine, compared with 1.5% across reports for all dog medicines, so it is reported less often than average with this medicine.
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). Pyrantel treats roundworms and hookworms.
Products with this combination include Heartgard Plus, Tri-Heart Plus, Iverhart Plus. 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 + Pyrantel cause accidental exposure in dogs?
- 583 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 the same 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).
Accidental exposure with similar medicines
- Accidental exposure after Milbemycin Oxime + Spinosad (Trifexis) 1,509 reports · 1.2% of its reports
- Accidental exposure after Moxidectin (ProHeart 6) 221 reports · 0.4% of its reports
- Accidental exposure after Milbemycin Oxime + Praziquantel (Interceptor Plus) 86 reports · 0.3% of its reports
- Accidental exposure after Milbemycin Oxime (Interceptor) 411 reports · 1.4% of its reports
- Accidental exposure after Selamectin (Revolution) 311 reports · 1.1% of its reports
- Accidental exposure after Ivermectin (Heartgard) 434 reports · 3.6% of its reports
- Accidental exposure after Ivermectin + Praziquantel + Pyrantel (Iverhart Max) 118 reports · 1.4% of its reports
- Accidental exposure after Ivermectin + Praziquantel 51 reports · 25% of its reports
- Accidental exposure after Eprinomectin 57 reports · 54% of its reports
- Accidental exposure after Moxidectin + Praziquantel 22 reports · 29% of its reports
All reported side effects of Ivermectin + Pyrantel in dogs · Medicines most reported with accidental exposure