Didn't stop worms in horses: medicines most often reported

367 FDA reports in horses mention didn't stop worms. These are the medicines named most often in those reports.

Pyrantel
142 15% of its reports
Ivermectin + Praziquantel
56 2.1% of its reports
Moxidectin (ProHeart 6)
55 4.0% of its reports
Ivermectin (Heartgard)
52 7.5% of its reports
Moxidectin + Praziquantel
48 13% of its reports
Fenbendazole
25 15% of its reports