Less appealing effects of MDMA include post-use depression and sleeplessness. Persons who take the drug in large doses may suffer nausea, dizziness, and severe palpitations of the lower facial muscles.
心情沮喪及睡眠問題，是 MDMA 的使用者必須面對的後遺症，而高劑量使用者則會出現噁心、暈眩及下顎劇烈顫抖等症狀。