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Planta Med 2023; 89(13): 1229-1235
DOI: 10.1055/a-2111-7319
Natural Product Chemistry and Analytical Studies
Reviews

An Update on Impacts of Epigallocatechin Gallate Co-administration in Modulating Pharmacokinetics of Statins, Calcium Channel Blockers, and Beta-blockers

Lee Siew-Keah
1   M. Kandiah Faculty of Medicine and Health Sciences, Universiti Tunku Abdul Rahman, Kajang, Malaysia
,
Tan Hong Jie
1   M. Kandiah Faculty of Medicine and Health Sciences, Universiti Tunku Abdul Rahman, Kajang, Malaysia
,
Chua Ang-Lim
2   Faculty of Medicine, Universiti Teknologi MARA, Sungai Buloh, Malaysia
,
Liew Kai Bin
3   Faculty of Pharmacy, University of Cyberjaya, Cyberjaya, Malaysia
,
Chew Yik-Ling
4   Faculty of Pharmaceutical Sciences, UCSI University, Kuala Lumpur, Malaysia
› Author AffiliationsThis work was supported by the Ministry of Higher Education (MOHE), Malaysia through Fundamental Research Grant Scheme (FRGS/1/2022/SKK10/UTAR/02/1), and Universiti Tunku Abdul Rahman, Malaysia through UTAR-Research Grant (IPSR/RMC/UTARRF/2021-C2/L08).
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Abstract

Brewed green tea, green tea extract, and its primary active compound, epigallocatechin gallate, may interact with drugs and alter the drugʼs therapeutic effectiveness, ultimately leading to therapeutic failure or drug overdose. Several isolated reports have claimed that epigallocatechin gallate is the main active ingredient that causes these effects. While a few studies aimed to uncover evidence of epigallocatechin gallate-drug interactions, no study has thoroughly and collectively reviewed them. Epigallocatechin gallate is a potential cardioprotective agent used by many patients with cardiovascular diseases as a complementary medicine alongside conventional modern medications, either with or without the knowledge of their physicians. Therefore, this review focuses on the impact of concurrent epigallocatechin gallate supplementation on pharmacokinetics and pharmacodynamics of several commonly used cardiovascular drugs (statins, beta-blockers, and calcium channel blockers). The PubMed index was searched for key words related to this review, without year limit, and the results were analyzed for interactions of cardiovascular drugs with epigallocatechin gallate. This review concludes that epigallocatechin gallate increases systemic circulation of several statins (simvastatin, fluvastatin, rosuvastatin) and calcium channel blockers (verapamil), but decreases the bioavailability of beta-blockers (nadolol, atenolol, bisoprolol). Further studies on its clinical significance in affecting drug efficacy are required.

Key words

Theaceae - Camellia sinensis - green tea - EGCG - catechins - drug interactions - herb co-administration - drug efficacy - cardiovascular drugs


Publication History

Received: 04 April 2023

Accepted after revision: 15 June 2023

Accepted Manuscript online:
16 June 2023

Article published online:
14 July 2023

© 2023. Thieme. All rights reserved.

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