Yucca prohibited???

[Beverly540@aol.com]

(snip from a ridecamp post)
>>Yucca contains a prohibited anti inflammatory for competition.  
Hi, all,
      Now I've got something else to worry about if this statement is true. We
feed an iron supplement, called EquiTonic, to one of our mares because the vet
said she need it (long story, won't go into it). The EquiTonic has Yucca in
it. Should I be concerned?
Bev Schlegel
Blue Ridge Mts. of SWVA