这个词是什么意思？
A second-generation histamine H1 receptor antagonist used in the treatment of allergic rhinitis and urticaria. Unlike most classical antihistamines (HISTAMINE H1 ANTAGONISTS) it lacks central nervous system depressing effects such as drowsiness.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D017336 · MeSH 2026。
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