1. **抗过敏作用**：开瑞坦是选择性外周H1受体拮抗剂，能有效抑制组胺介导的过敏反应，适用于治疗多种过敏性疾病E:\bca\图片\u=3718251535,2311713419&fm=193&f=GIF.jfif。 2. **治疗过敏性鼻炎**：开瑞坦可以缓解过敏性鼻炎的症状，如打喷嚏、流鼻涕、鼻塞、鼻痒、咽痒、眼部瘙痒和烧灼感等。 3E:\bca\图片\u=12460107,2145896398&fm=193&f=GIF.jfif. **治疗慢性荨麻疹**：对于慢性荨麻疹，开瑞坦能够缓解瘙痒和皮疹等症状。 4. **治疗皮肤过敏**：开瑞坦适用于治疗其他过敏性皮肤病，如皮肤瘙痒、皮肤红肿、充血等。 5. **治疗过敏性哮喘**：开瑞坦可以与其他药物联合使用，如β2受体激动剂，辅助治疗过敏性哮喘。 6. **治疗儿童过敏性疾病**：开瑞坦糖浆适用于儿童，治疗过敏性鼻炎、过敏性皮肤病等引起的症状。 7. **预防心血管事件**：开瑞坦能够降低血压，改善心脏功能，从而预防心脑血管事件的发生。 8. **改善肾功能**：通过扩张肾血管，增加肾血流量，开瑞坦有助于改善肾功能，减少蛋白尿等肾脏损害。 开瑞坦的药效持久，一次服用后药效可维持24小时以上。然而，使用开瑞坦时应注意以下几点： - **遵医嘱**：在医生指导下使用，特别是儿童和有特殊病史的患者。 -…
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