Didn't work as expected in horses: medicines most often reported

4,016 FDA reports in horses mention didn't work as expected. These are the medicines named most often in those reports.

Omeprazole
1,708 88% of its reports
Ketamine
463 82% of its reports
Sucralfate
384 98% of its reports
Detomidine
306 31% of its reports
Xylazine
268 58% of its reports
Pyrantel
263 28% of its reports
Pergolide
143 12% of its reports
Pentobarbital + Phenytoin
115 92% of its reports
Misoprostol
105 99% of its reports
Misoprostal
88 99% of its reports
Ivermectin + Praziquantel
86 3.2% of its reports
Butorphanol
84 28% of its reports
Firocoxib (Previcox)
74 15% of its reports
Ivermectin (Heartgard)
65 9.4% of its reports
Ceftiofur
64 5.3% of its reports
Moxidectin (ProHeart 6)
59 4.3% of its reports
Ponazuril
48 27% of its reports
Flunixin Meglumine
46 7.4% of its reports
Moxidectin + Praziquantel
44 12% of its reports
Ciclesonide
42 45% of its reports
Polysulfated Glycosaminoglycan
40 7.8% of its reports
Altrenogest Oily
36 48% of its reports
Diclazuril Pellets
32 46% of its reports
Deslorelin Acetate
31 39% of its reports
Fenbendazole
27 16% of its reports
Clenbuterol Hydrochloride
21 21% of its reports