Medina Spirit heads to Preakness without Bob Baffert with testing underway

More than 850 drugs appear in four classes, Class A through Class D, on the Kentucky Horse Racing Commission’s Prohibited or Regulated Drugs List. Class A, which, according to the commission, has “the highest potential for influencing equestrian performance,” includes cocaine, lithium, and all kinds of pharmaceutical words, 23 of which start with “meth”. Class B drugs, which can affect performance but less so than Class A, are in the high 200s and include nitroglycerin and caffeine.