Didn't stop worms after Eprinomectin + Esafoxolaner + Praziquantel (NexGard Combo) in cats
The FDA has received 357 reports of didn't stop worms in cats after Eprinomectin + Esafoxolaner + Praziquantel. That is 11% of all reports for this medicine, compared with 1.8% across reports for all cat medicines, so it is reported unusually often with this medicine.
How soon it started
How the animals did
Problems reported at the same time
Age of the animals
About this medicine
Eprinomectin controls worms and prevents heartworm. Esafoxolaner kills fleas and ticks (spot-on for cats). Praziquantel treats tapeworms.
Products with this combination include NexGard Combo. 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 Eprinomectin + Esafoxolaner + Praziquantel cause didn't stop worms in cats?
- 357 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 20 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).
Didn't stop worms with similar medicines
- Didn't stop worms after Selamectin (Revolution) 574 reports · 2.6% of its reports
- Didn't stop worms after Eprinomectin + Praziquantel 99 reports · 17% of its reports
All reported side effects of Eprinomectin + Esafoxolaner + Praziquantel in cats · Medicines most reported with didn't stop worms