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Cetirizine是一种第二代选择性H1组胺受体拮抗剂，具有抗过敏作用,抑制过敏反应期间嗜酸性粒细胞趋化。Cetirizine具有较低的中枢镇静作用。

Cetirizine-D4 is a deuterium-labeled Cetirizine. Cetirizine (T0089L) is a second-generation antihistamine and a long-acting histamine H1-receptor antagonist.

Cetirizine-D8 is a deuterium-labeled Cetirizine. Cetirizine (T0089L) is a second-generation antihistamine and a long-acting histamine H1-receptor antagonist.