安非他命屬於苯乙胺衍生物。安非他命的衍生物也歸在同一分類中的分類中，比如說：安非他酮、、  MDMA 、和甲基苯丙胺。安非他命也與人體內可自然生成的兩個屬於痕量胺的神經傳導物質——特別是苯乙胺和——有關。
Meanwhile , Effy goes to a party with her talkative friend , Julie . She flirts with a boy named Spencer and shares an  E with him . The group is caught by the police and they are all arrested .
两词在上述语境中含义相同。