Joseph Bertino Jr.

Since the launch of the Horseracing Integrity and Safety Act's (HISA) drug testing program over a year ago, metformin has sucked up an awful lot of oxygen. Under HISA, there have been seven resolved cases and four pending cases involving metformin—perhaps not an especially large number on its own, until framed against the number of metformin cases adjudicated before the program went into effect. An Association of Racing Commissioners International's (ARCI) review of their database "going back decades" found five metformin cases for Thoroughbreds. All were from 2017 onwards. The...