Trimetazidine was originally included in S6.b based upon the similarity of its chemical structure to some of the listed Stimulants.
It has been moved to the newly created sub-section S4.5.c as it is pharmacologically classified as a modulator of cardiac metabolism.
As of July 2019, we have registered 14 cases involving this substance in the Anti-Doping Database. Latest cases results in four year suspensions.