原发性震颤（ET）是一种在运动障碍中最常见，表现为双手、头、语音及偶尔累及双腿和躯干的单症状姿势性和运动性震颤。至今，仍无令人满意的治疗手段。选择性钙通道阻滞剂氟桂嗪和尼卡地平（nicardipine）虽有效，但可引起锥体外系不良反应。本文研究了另一种无锥体外系副反应 Primary tremor (ET) is a single symptom of postural and motor tremor that is most common in dyskinesia, manifested by hands, head, speech, and occasionally legs and torso involvement. So far, there is still no satisfactory treatment. Selective calcium channel blockers flunarizine and nicardipine, although effective, can cause extrapyramidal side effects. This article studies another non-extrapyramidal side reaction