IOC decided to raise bronze medallist Tayna Lawrence to joint silver and fourth-placed Merlene Ottey to the bronze medal position. In spite of the relatively few occasions in which 100 m sprinters have failed doping tests at the Olympics, numerous Olympic sprinters have been banned outside the competition or implicated otherwise, including many medallists. Two-time Olympic champion Carl Lewis had a positive drug test for stimulants at the US Olympic trials. The United States Olympic Committee accepted his claim of inadvertent use, since a dietary supplement he ingested was found to contain "Ma huang", the Chinese name for Ephedra (ephedrine is known to help weight loss). The 1992 Olympic champion Linford Christie was banned for nandrolone later in his career. Angel Guillermo Heredia accused the 2000 Olympic champion Maurice Greene of doping; Greene denied this but admitted to paying for "stuff" for his training mates. Justin Gatlin, the men's gold medallist in 2004, served a doping suspension both before and after his Olympic win, and returned to the podium at the 2012 Olympics. The men's runner-up in 2012, Yohan Blake, was banned for consuming a stimulant in 2009. On the women's side, the Olympic 100 m was affected by state-sponsored doping in East Germany. Stasi documents released after the fall of the Berlin Wall revealed extensive drug usage by Olympic sprinters, including the 1976 and 1980 silver medallists Renate Stecher and Marlies Göhr, as well as the 1988 bronze medallist Heike Drechsler. Shelly-Ann Fraser, twice Olympic champion, received a six-month ban in 2010 for taking a prohibited narcotic for pain relief. A similar system was in place in the Soviet Union with major revelations concerning the Soviet state-sponsored doping program in preparation for the 1984 Olympics coming to light in 2016. The 2008 runner-up Sherone Simpson was banned in 2013 after a positive test for a stimulant and two-time bronze medallist Veronica Campbell-Brown failed a test for a diuretic that same year. A fourth Jamaican medallist, Merlene Ottey, received a ban for the steroid nandrolone in 1999 but this was rescinded on appeal due to laboratory errors. Medal summary Men Multiple medallists Medals by country Women Multiple medallists Medals by country Overall Medals by country Olympic record progression The best time for the 100 m set during Olympic competition is known as the Olympic record. To count as an official record, the race and the equipment used must adhere to