The medication was withdrawn from the market due to safety concerns.

withdrawn 是动词 withdraw 的过去分词形式，在句中表示被动。withdraw 由前缀 with-（表示"向后、往回"）和动词 draw（拉、拖）组成，意思是"撤回、收回"。withdrawn表示"被撤回/被撤下"的状态。