Evidence map›Paper›PMID 29703388›Full record

ReviewJournal of food and drug analysis2018

Update of green tea interactions with cardiovascular drugs and putative mechanisms.

José Pablo Werba, Shingen Misaka, Monica Gianna Giroli, Kenju Shimomura, Manuela Amato, Niccolò Simonelli, Lorenzo Vigo, Elena Tremoli

Open access · hybridAbstract readReview
In one paragraph

Review in Journal of food and drug analysis, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
6.5field-weighted citation impact, top 3% of its field
1 · What the graph read from 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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

24 citing papers in PubMed, 61 citations in OpenAlex.

  1. Article
  2. Green Tea: Current Knowledge and Issues.Foods (Basel, Switzerland) · 2025
    Review
  3. Review
  4. Review
  5. Herbal Treatments for Obesity: A Review.Current medicinal chemistry · 2025
    Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Review
  11. Review
  12. Review
  13. Review
  14. Article
  15. The influence of Javanese turmeric (Pharmaceutical biology · 2021
    Article
  16. Review
  17. Article
  18. Article
  19. Review
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 2 institutions in 2 countries.

José Pablo WerbaUnit of Atherosclerosis Prevention, Centro Cardiologico Monzino, IRCCS, Milan, Italy. Electronic address: pablo.werba@cardiologicomonzino.it.
Shingen MisakaDepartment of Pharmacology, School of Medicine, Fukushima Medical University, Fukushima, Japan.
Monica Gianna GiroliUnit of Atherosclerosis Prevention, Centro Cardiologico Monzino, IRCCS, Milan, Italy.
Kenju ShimomuraDepartment of Pharmacology, School of Medicine, Fukushima Medical University, Fukushima, Japan.
Manuela AmatoUnit of Atherosclerosis Prevention, Centro Cardiologico Monzino, IRCCS, Milan, Italy; Department of Clinical Medicine and Surgery, Federico II University, Naples, Italy.
Niccolò SimonelliUnit of Atherosclerosis Prevention, Centro Cardiologico Monzino, IRCCS, Milan, Italy.
Lorenzo VigoUnit of Atherosclerosis Prevention, Centro Cardiologico Monzino, IRCCS, Milan, Italy; Department of Clinical Medicine and Surgery, Federico II University, Naples, Italy.
Elena TremoliUnit of Atherosclerosis Prevention, Centro Cardiologico Monzino, IRCCS, Milan, Italy.
Centro Cardiologico Monzino · ITFukushima Medical University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Many patients treated with cardiovascular (CV) drugs drink green tea (GT), either as a cultural tradition or persuaded of its putative beneficial effects for health. Yet, GT may affect the pharmacokinetics and pharmacodynamics of CV compounds. Novel GT-CV drug interactions were reported for rosuvastatin, sildenafil and tacrolimus. Putative mechanisms involve inhibitory effects of GT catechins at the intestinal level on influx transporters OATP1A2 or OATP2B1 for rosuvastatin, on CYP3A for sildenafil and on both CYP3A and the efflux transporter p-glycoprotein for tacrolimus. These interactions, which add to those previously described with simvastatin, nadolol and warfarin, might lead, in some cases, to reduced drug efficacy or risk of drug toxicity. Oddly, available data on GT interaction with CV compounds with a narrow therapeutic index, such as warfarin and tacrolimus, derive from single case reports. Conversely, GT interactions with simvastatin, rosuvastatin, nadolol and sildenafil were documented through pharmacokinetic studies. In these, the effect of GT or GT derivatives on drug exposure was mild to moderate, but a high inter-individual variability was observed. Further investigations, including studies on the effect of the dose and the time of GT intake are necessary to understand more in depth the clinical relevance of GT-CV drug interactions.

Indexed as

Drug InteractionsAnimalsCamellia sinensisCardiovascular AgentsHumansOrganic Anion TransportersTeaCardiovascular AgentsOrganic Anion TransportersTeaCardiovascular drugsGreen teaHerb–drug interactions

Identifiers

PMID29703388
PMCPMC9326886
OpenAlexW2791010527

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

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.