What is the dosage and usage of 40mg Amlodipine?

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40mg氨氯地平剂量不存在且不应使用

氨氯地平的最大推荐剂量为每日10mg,40mg剂量超出所有临床指南和药品说明书的范围,不应处方或使用。 1

标准剂量范围

  • 起始剂量:2.5mg,每日一次 1
  • 常规剂量范围:2.5-10mg,每日一次 1
  • 最大剂量:10mg,每日一次 1

根据美国心脏病学会/美国心脏协会(ACC/AHA)2017年高血压指南,氨氯地平的推荐剂量范围明确限定在2.5-10mg/日 1

药代动力学特点

  • 半衰期:35-50小时,允许每日一次给药 2, 3, 4
  • 生物利用度:60-80% 2
  • 达峰时间:口服后6-8小时 2
  • 稳态时间:连续给药1-1.5周后达到稳态 2

氨氯地平的长半衰期意味着即使漏服一次,血压控制仍可维持超过24小时 4

剂量调整原则

  • 如果5mg剂量血压控制不佳,可增至10mg 1
  • 如果10mg单药治疗仍不足以控制血压,应添加其他类别降压药(如ACEI、ARB或利尿剂),而非继续增加氨氯地平剂量 1
  • 老年患者、肝功能不全患者应从2.5mg起始 3

常见不良反应

  • 外周水肿:剂量依赖性,10mg剂量更常见,女性发生率高于男性 1, 3
  • 其他:心悸、头晕、面部潮红 3, 4

如果出现氨氯地平相关水肿,应添加或增加ACEI或ARB剂量,而非停用氨氯地平 5

特殊人群注意事项

  • 射血分数降低的心力衰竭(HFrEF)患者:应避免使用;如必须使用,氨氯地平或非洛地平是二氢吡啶类中的首选 1
  • 冠心病患者:氨氯地平已被证实可降低心血管事件 1, 6
  • 慢性肾病或糖尿病患者:氨氯地平不会恶化肾功能或血糖控制 4

关键警告

任何超过10mg/日的氨氯地平剂量均无临床证据支持,且可能显著增加不良反应风险(特别是外周水肿、低血压)而无额外降压获益 1, 3, 4

如果患者目前正在服用40mg氨氯地平,应立即:

  1. 将剂量降至10mg/日 1
  2. 评估血压控制情况 1
  3. 如需进一步降压,添加其他类别降压药(ACEI、ARB或噻嗪类利尿剂) 1
  4. 监测电解质和肾功能(如添加ACEI/ARB) 1

References

Guideline

Guideline Directed Topic Overview

Dr.Oracle Medical Advisory Board & Editors, 2025

Research

Amlodipine: a new calcium antagonist.

American journal of hospital pharmacy, 1994

Research

Amlodipine in the current management of hypertension.

Journal of clinical hypertension (Greenwich, Conn.), 2023

Guideline

Management of Amlodipine-Induced Pedal Edema

Praxis Medical Insights: Practical Summaries of Clinical Guidelines, 2025

Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

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