Trial reportEuropean journal of drug metabolism and pharmacokinetics2020
Effects of Green Tea Extract on Atorvastatin Pharmacokinetics in Healthy Volunteers.
Trial report in European journal of drug metabolism and pharmacokinetics, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
16 citing papers in PubMed, 1 synthesis or guideline pooled it, 29 citations in OpenAlex.
- Lipid-lowering statins and polyphenol-based supplementation: a scoping review on drug-food interaction potential.Frontiers in pharmacology · 2025Pooled it
- Tea consumption and cardiovascular risk and outcomes: mechanistic insights, epidemiological evidence, and clinical implications.Frontiers in cardiovascular medicine · 2026Review
- Epigallocatechin Gallate as a Molecular Therapeutic in Heart Failure and Cardio-Oncology: Mechanistic Pathways and Translational Perspectives.International journal of molecular sciences · 2025Review
- Food Additives Inhibit Intestinal Drug Transporters but Have Limited Effect on In Vitro Drug Permeability.Molecular pharmaceutics · 2025Article
- Unlocking Polyphenol Efficacy: The Role of Gut Microbiota in Modulating Bioavailability and Health Effects.Nutrients · 2025Review
- Catechins and Human Health: Breakthroughs from Clinical Trials.Molecules (Basel, Switzerland) · 2025Review
- Tea Consumption and Diabetes: A Comprehensive Pharmacological Review of Black, White, Green, Oolong, and Pu-erh Teas.Plants (Basel, Switzerland) · 2025Review
- Green Tea: Current Knowledge and Issues.Foods (Basel, Switzerland) · 2025Review
- Evaluation of Luteolin Nanosuspensions on Pharmacokinetics of Atorvastatin: Drug-Drug Interactions Using Rat Models.International journal of nanomedicine · 2025Article
- Adjuvant Anti-tumor Therapy with Polyphenolic Compounds: A Review.Current medicinal chemistry · 2025Review
- Dietary Supplements for Weight Loss and Drug Interactions.Pharmaceuticals (Basel, Switzerland) · 2024Review
- CYP3A4*1B and CYP3A5*3 SNPs significantly impact the response of Egyptian candidates to high-intensity statin therapy to atorvastatin.European journal of medical research · 2024Article
- Review
- Possible Side Effects of Polyphenols and Their Interactions with Medicines.Molecules (Basel, Switzerland) · 2023Review
- Statins Lower Lipid Synthesis But Promote Secretion of Cholesterol-Enriched Extracellular Vesicles and Particles.Frontiers in oncology · 2022Article
- Atorvastatin-Green Tea Interaction: Possible Mechanisms are Complicated, But Clinical Relevance is Not?European journal of drug metabolism and pharmacokinetics · 2020Article
Corrections and comments
- Commented on by
Authors and funding
5 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
BACKGROUND AND
objectivesGreen tea catechins were recently reported to inhibit drug transporters such as organic anion-transporting polypeptides (OATPs) and metabolic enzymes, affecting the bioavailability of many drugs. This study aimed to evaluate the clinical significance of the effects of different doses of green tea extract on the pharmacokinetic parameters of atorvastatin and to rationalize the associated interaction mechanism.
methodsA randomized, double-blind, three-phase crossover study involving 12 healthy volunteers was performed. Participants received a single dose of atorvastatin 40 mg alone (control group), atorvastatin 40 mg plus a capsule containing 300 mg of dry green tea extract, or atorvastatin 40 mg plus a capsule containing 600 mg of dry green tea extract. Plasma samples taken from the volunteers were analyzed for atorvastatin using liquid chromatography-tandom mass spectrometry (LC/MS/MS).
resultsCompared to atorvastatin alone, the administration of 300 mg or 600 mg of the green tea extract along with atorvastatin decreased the peak plasma concentration (C
conclusionGreen tea extract decreases the absorption but not the elimination of atorvastatin, possibly by inhibiting OATP, albeit not in a dose-dependent manner. Coadministration of green tea extract with atorvastatin may necessitate the monitoring of the plasma concentration of atorvastatin in clinical practice.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.