Qu'est ce que la L carnitine, le produit test par Alberto Salazar sur ses athltes, dont Mo Farah? Ewan MacKenna: Mo Farah has more questions to answer than gold medals and the facts are stacking up against him : r running Four time Olympic champion Mo Farah lied about taking controversial supplement L carnitine before the 2014 London Marathon. : r olympics Mo Farah interview from London Marathon exposed after changing account to doping officials Other Sport Express.co.uk Mo Farah injection before 2014 London Marathon was not recorded: doctor India Today Olympic champion Mo Farah faces renewed doping suspicions following British TV investigation ABC News