Doctors demanded the withdrawal of the drug from the market after several cases involving dangerous side-effects were reported.

withdrawal 是动词 withdraw 的名词形式。withdraw 由前缀 with-（表示"向后、离开"）和 draw（"拉、拖"）组成，字面意思是"拉回、撤回"。 withdrawal 作为名词，表示"撤回、撤销"的动作或状态，在这里指将药物从市场上撤回的行为。