Qu'est ce que la L carnitine, le produit test par Alberto Salazar sur ses athltes, dont Mo Farah? Mo Farah has lied at least twice to authorities Athletics Illustrated Magazine Panorama: Fresh questions over Mo Farah's relationship with Alberto Salazar BBC Sport Mo Farah's old samples 'may be retested' Four time Olympic champion Mo Farah lied about taking controversial supplement L carnitine before the 2014 London Marathon. : r olympics