Febantel + Praziquantel + Pyrantel (Drontal Plus) side effects in dogs
6,706 reports sent to the FDA between 1996 and 2026 involve Febantel + Praziquantel + Pyrantel in dogs. The most reported problems were vomiting, diarrhea, lethargy. 38% were marked serious, and where it was recorded, signs eased after stopping the medicine in 100% of cases.
About this medicine
Febantel treats intestinal worms. Praziquantel treats tapeworms. Pyrantel treats roundworms and hookworms.
Products with this combination include Drontal Plus. The FDA hides brand names in its public data, so these reports cover every product with the same active ingredients.
Most reported side effects
Share = percentage of this medicine's reports that mention the problem. One report can list several problems.
Reports that it didn't work
Some reports are about the medicine not working (for example a dog still getting fleas or heartworm), not about a side effect.
How soon problems started
Time from the first dose to the first sign, where both dates were reported (5,348 reports).
How the animals did
Breeds named most often
Popular breeds appear more often because there are more of them.
- Labrador Retriever 390 reports
- Chihuahua 246 reports
- Greyhound 225 reports
- Yorkshire Terrier 212 reports
- Shih Tzu 200 reports
- Golden Retriever 190 reports
- German Shepherd Dog 180 reports
- Pit Bull 153 reports
- Beagle 114 reports
- Australian Shepherd Dog 99 reports