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喝茶後頭暈、心跳加速？「茶醉」的成因及5招預防方法

2023/11/21

什麼是茶醉？ 

 

茶葉含有的茶鹼和咖啡因，都屬於中樞神經興奮劑，當喝了過量或過濃的茶時，大量的茶鹼和咖啡因會破壞體內電解質的平衡，並刺激中樞神經系統而引起「茶醉」。1-3 

 

茶醉的症狀包括：心跳加速、頭暈、頭痛、緊張、煩躁、失眠、手腳無力或刺痛，嚴重時更可引發心律不正、抽搐及癲癇發作，需要立即送院救治。4,5
 

預防或改善茶醉的方法6

  1. 不要空腹喝茶，以免刺激胃酸大量分泌，茶中的咖啡因也會更容易被身體吸收 
  2. 避免喝太濃的茶，特別是平日很少喝茶的人士應該喝較清淡的茶 
  3. 不要短時間內喝大量的茶 
  4. 不要喝新茶（即採摘下來不足一個月的茶葉），因為其咖啡因和茶鹼濃度會較高，更容易引起茶醉 
  5. 若出現茶醉，可吃一些高糖分食物或肉類，以紓緩症狀 

參考資料:

  1.  Boros K, Jedlinszki N, Csupor D. Theanine and Caffeine Content of Infusions Prepared from Commercial Tea Samples. Pharmacogn Mag. 2016 Jan-Mar;12(45):75-9. doi: 10.4103/0973-1296.176061. PMID: 27019564; PMCID: PMC4787341. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4787341/. Accessed 11 November 2023. 
  2. IARC Working Group on the Evaluation of Carcinogenic Risks to Humans. Coffee, Tea, Mate, Methylxanthines and Methylglyoxal. Lyon (FR): International Agency for Research on Cancer; 1991. (IARC Monographs on the Evaluation of Carcinogenic Risks to Humans, No. 51.) Theophylline. Available from: https://www.ncbi.nlm.nih.gov/books/NBK507021/. Accessed 11 November 2023. 
  3.  Monteiro JP, Alves MG, Oliveira PF, Silva BM. Structure-Bioactivity Relationships of Methylxanthines: Trying to Make Sense of All the Promises and the Drawbacks. Molecules. 2016 Jul 27;21(8):974. doi: 10.3390/molecules21080974. PMID: 27472311; PMCID: PMC6273298. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6273298/. Accessed Sep11, 2023. 
  4.  US.Food & Drug. Spilling the Beans: How Much Caffeine is Too Much? Available at:  https://www.fda.gov/consumers/consumer-updates/spilling-beans-how-much-caffeine-too-much. Accessed 11 November 2023. 
  5. Jilani TN, Preuss CV, Sharma S. Theophylline. [Updated 2023 May 1]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2023 Jan-. Available from: https://www.ncbi.nlm.nih.gov/books/NBK519024/. Accessed 11 November 2023. 
  6.  Teavirve. Overindulgence in Tea Can Bring Repercussions. Available at: https://www.teavivre.com/info/drink-more-will-be-repercussions.html/. Accessed 11 November 2023. 

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