A super version of the blood booster EPO has become the latest rage in the cycling world, with a third person that participated in July’s Tour de France testing positive for the banned substance CERA. The latest is Italy’s Leonardo Piepoli, who had two positive tests.

Stefan Schumacher (Germany) and Riccardo Ricco (Italy) were previously suspended for using the new and stronger version of EPO, which has a longer lasting effect without repeated dosing.

Having to only use the drug on a monthly basis, CERA has a much larger window than EPO, which needs to be injected days and sometimes hours before the activity that is to be enhanced.