Rubuta ci gaba don wannan sakin layi - A watan Satumbar 2011, Horakova ya gwada tabbatacce ga haramtaccen abu clenbuterol yayin da yake shiga cikin keken dutse hudu a gasar zakarun duniya. A ranar 28 ga Yuni, 2012, kungiyar Union Cycliste Internationale ta yanke shawarar yanke hukuncin dakatar da Horakova na shekaru biyu daga gasar zakarun duniya ta UCI.
, kuma mafi mahimmanci, daga wasannin Olympics a London, duk da cewa kungiyar Czech Cycling Union ta yi kira a farkon wannan shekarar.