TempoLife › Funkcijos › Herb and spice reference: evidence, dose and interactions › green-tea-extract
Green tea extract
Green tea extract — ką Europos monografija iš tikrųjų pagrindžia, kam jis nėra skirtas, forma ir kiek laiko jį numatyta naudoti, šalutinis poveikis ir 3 vaisto sąveikas, dokumentuota jam.
Tai informacinis tinklalapis, o ne diagnozė ir ne receptas. Augaliniai produktai yra tikra farmakologija: jie turi veikimą, šalutinį poveikį ir sąveikas su vaistais. Pasakykite savo gydytojui ir vaistininkui apie viską, ką vartojate, įskaitant arbatas ir papildus, ir niekada nenutraukite bei nekeiskite paskirto vaisto dėl to, ką čia perskaitėte.
Kas tai yra
Camellia sinensis (L.) Kuntze — leaf; concentrated catechin extracts
Vietiniai pavadinimai regione, kurį aptarnauja ši svetainė:roheline tee (ET) · vihreä tee (FI) · зелёный чай (RU).
Čia sugrupuota skiltyje Kitchen spices with a safety story. Reguliavimo pozicija:Drinking tea is a food; concentrated extracts are food supplements with an EFSA safety assessment.
Ką įrodymai patvirtina
Registruota indikacija:Marketed for weight loss and metabolism. Neither claim survives review.
The gap between the drink and the capsule is the entire story here. Drinking green tea is not associated with liver harm and is a perfectly ordinary part of a diet. Concentrated green-tea extracts, sold for weight loss and metabolism, are a different exposure altogether: EFSA assessed them and concluded that catechin doses at or above 800 mg of EGCG a day taken as a food supplement have been shown in trials to raise liver transaminases — a marker of liver stress — and that a safe level for supplements could not be established from the available data. Green-tea extract is among the more frequently implicated botanicals in registries of herb-induced liver injury, and taking it on an empty stomach appears to raise absorption and risk. On the weight-loss claim, the effect measured in trials is too small to matter to anyone.
D — Popular claim unsupported, or safety dominates The better trials are negative, or the substance appears in the literature mainly for the harm it has caused.
Kam tai nėra skirta
Weight loss, and any liver purpose whatsoever — this is one of the botanicals most likely to injure a liver, not support one.
Forma, stiprumas ir kiek ilgai
Brewed leaf tea (a food), and concentrated catechin extracts in capsules, often combined with caffeine in "fat burner" products.
Trukmė.For extracts, the honest answer is that no safe long-term intake has been established.
Šiame puslapyje tyčia nėra jokio skaičiaus gramais. Augalo dalis, ekstrakcijos tirpiklis ir žaliavos bei ekstrakto santykis kartu apibrėžia preparatą, o iš vieno paimtas skaičius neaprašo kito. Pagrindimas išdėstytas pagrindiniame puslapyje; jums taikomas kiekis yra tas, kuris atspausdintas ant pakuotės, kurią laikote rankose, o vaistininkas jį perskaitys su jumis.
Šalutinis poveikis
From tea, the effects of caffeine. From extracts, liver injury: dark urine, yellow eyes or skin, itching, unusual fatigue, pain under the right ribs. Stop immediately and seek medical care if those appear. Nausea and stomach upset are common, particularly fasted.
Kam reikėtų to vengti
Avoid extracts with any liver condition, in pregnancy and while breastfeeding. Anyone taking a supplement with an unexplained rise in liver enzymes should stop it and tell their doctor what they were taking.
Sąveika su vaistais
| Vaistas ar medžiaga | Kas aprašyta |
|---|---|
| Anything else that stresses the liver | Stacking a green-tea extract with alcohol or with other substances that stress the liver is the pattern behind many of the reported cases. |
| Iron supplements and iron-rich meals | Tea polyphenols bind non-haem iron and measurably reduce how much iron is absorbed from a meal taken with tea. If you are being treated for iron deficiency, take iron and tea well apart. |
| Anticoagulants and antiplatelets (warfarin, DOACs, aspirin, clopidogrel) | Green tea leaf contains vitamin K, and large changes in intake have been reported to affect warfarin control. As with all the vitamin K foods, steady intake is what matters, not avoidance. |
Atvirkštinis vaizdas — pradėti ne nuo augalo, o nuo vaisto — yra vaistų, maisto ir alkoholio sąveikų žinynas, o apibendrinta apie kiekvieną augalą šioje svetainėje.
Kaip maistas
Šis yra ir virtuvėje, todėl maistinės vertės skaičius verta turėti šalia farmakologijos: žr. maisto duomenų puslapis apie kalorijas ir maistines medžiagas 100 g ir porcijoje. Kulinariniai kiekiai ir gydomieji preparatai yra skirtingos ekspozicijos, ir būtent tas skirtumas paprastai ir yra visa saugumo istorija.
Šaltiniai:European Food Safety Authority — scientific opinions on coumarin, green tea catechins and hydroxyanthracene derivatives · LiverTox: Clinical and Research Information on Drug-Induced Liver Injury (NIDDK, National Institutes of Health) · NIH National Center for Complementary and Integrative Health — herb fact sheets· patikrinta2026-09-06
Dažnai užduodami klausimai
Kam naudojamas green tea extract?
Marketed for weight loss and metabolism. Neither claim survives review. The gap between the drink and the capsule is the entire story here. Drinking green tea is not associated with liver harm and is a perfectly ordinary part of a diet. Concentrated green-tea extracts, sold for weight loss and metabolism, are a different exposure altogether: EFSA assessed them and concluded that catechin doses at or above 800 mg of EGCG a day taken as a food supplement have been shown in trials to raise liver transaminases — a marker of liver stress — and that a safe level for supplements could not be established from the available data. Green-tea extract is among the more frequently implicated botanicals in registries of herb-induced liver injury, and taking it on an empty stomach appears to raise absorption and risk. On the weight-loss claim, the effect measured in trials is too small to matter to anyone.
Ar green tea extract veikia?
Įvertinta D čia: The better trials are negative, or the substance appears in the literature mainly for the harm it has caused. Weight loss, and any liver purpose whatsoever — this is one of the botanicals most likely to injure a liver, not support one.
Kiek green tea extract turėčiau vartoti?
Šiame žinyne gramų skaičiai nenurodomi, nes jie neperkeliami tarp skirtingo ekstrakto stiprumo preparatų. Sąžiningai galima nurodyti tik formą ir trukmę:Brewed leaf tea (a food), and concentrated catechin extracts in capsules, often combined with caffeine in "fat burner" products. For extracts, the honest answer is that no safe long-term intake has been established.
Kokie yra green tea extract šalutiniai poveikiai?
From tea, the effects of caffeine. From extracts, liver injury: dark urine, yellow eyes or skin, itching, unusual fatigue, pain under the right ribs. Stop immediately and seek medical care if those appear. Nausea and stomach upset are common, particularly fasted.
Ar green tea extract sąveikauja su vaistais?
Taip — dokumentuotaLiver load, Iron, Anticoagulants, warfarin. Kiekvienas iš jų aprašytas šiame puslapyje, su nuoroda į vaisto pusės žinyną, kur toks yra.
Kiti:kitchen spices with a safety story
Cinnamon
Nothing that survives a systematic review. It is a spice with a real safety figure attached.
Česnakas
Relief of symptoms of mild circulatory complaints, in traditional-use preparations. Not the treatment of cardiovascular disease.
Nutmeg
Nothing medicinal. It is on this list because it is the kitchen spice that poisons people.
Chilli and cayenne (capsaicin)
Topical relief of muscle and joint pain in low-strength preparations; high-concentration capsaicin patches are licensed medicines for peripheral neuropathic pain.
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