TempoLife › Ominaisuudet › Herb and spice reference: evidence, dose and interactions › green-tea-extract
Green tea extract
Green tea extract — mitä eurooppalainen monografia tosiasiassa tukee, mihin se ei ole, muoto ja aiottu kesto, haittavaikutukset ja 3 lääkeaineinteraktios dokumentoituna.
Tämä on viitesivu, ei diagnoosi eikä resepti. Yrttivalmisteet ovat oikeaa farmakologiaa: niillä on vaikutuksia, haittavaikutuksia ja yhteisvaikutuksia lääkkeiden kanssa. Kerro lääkärille ja apteekille kaikki mitä otat, myös teet ja lisäravinteet, äläkä koskaan lopeta tai muuta määrättyä lääkettä tämän sivun takia.
Mikä se on
Camellia sinensis (L.) Kuntze — leaf; concentrated catechin extracts
Paikalliset nimet alueella jota tämä sivusto palvelee:roheline tee (ET) · vihreä tee (FI) · зелёный чай (RU).
Ryhmitelty täällä Kitchen spices with a safety story. Sääntelyasema:Drinking tea is a food; concentrated extracts are food supplements with an EFSA safety assessment.
Mitä näyttö tukee
Rekisteröity käyttöaihe: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.
Mihin se ei ole
Weight loss, and any liver purpose whatsoever — this is one of the botanicals most likely to injure a liver, not support one.
Muoto, vahvuus ja kuinka kauan
Brewed leaf tea (a food), and concentrated catechin extracts in capsules, often combined with caffeine in "fat burner" products.
Kesto.For extracts, the honest answer is that no safe long-term intake has been established.
Tällä sivulla ei ole grammilukua tahallaan. Kasvinosa, uuttoliuotin ja huume-uute-suhde yhdessä määrittävät valmisteen, eikä yhdestä otettu luku kuvaa toista. Perustelu on keskussivulla; sinuun pätevä määrä on sen pakkauksen painettu, jota pidät, ja apteekki lukee sen kanssasi.
Haittavaikutukset
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.
Kenen pitäisi välttää sitä
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.
Yhteisvaikutukset lääkkeiden kanssa
| Lääke tai aine | Mitä kuvataan |
|---|---|
| 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. |
Käänteinen näkymä — aloita lääkkeestä eikä kasvista — on lääke-, ruoka- ja alkoholiyhteisvaikutusten viitteessä, ja yhteenvedettynä jokaiselle yrtille tällä sivustolla.
Ruokana
Tämä on myös keittiössä, joten ravintoluvut kannattaa olla farmakologian vieressä: katso ruokatietosivua kaloreista ja ravintoaineista per 100 g ja per annos. Ruoanlaittomäärät ja lääkevalmisteet ovat eri altistuksia, ja ero on yleensä koko turvallisuustarina.
Lähteet: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· tarkistettu2026-09-06
Usein kysytyt kysymykset
Mihin green tea extract käytetään?
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.
Toimiiko green tea extract?
Arvioitu täällä D: 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.
Kuinka paljon green tea extract minun pitäisi ottaa?
Tämä viite ei paina grammilukuja, koska ne eivät siirry eri uutevahvuuksien valmisteiden välillä. Rehellisesti voidaan sanoa muoto ja kesto: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.
Mitkä ovat green tea extract haittavaikutukset?
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.
Vaikuttaako green tea extract yhdessä lääkkeiden kanssa?
Kyllä — dokumentoituLiver load, Iron, Anticoagulants, warfarin. Kukin on kuvattu tällä sivulla, linkillä lääkepuolen viitteeseen jos sellainen on.
Muut kohteessakitchen spices with a safety story
Cinnamon
Nothing that survives a systematic review. It is a spice with a real safety figure attached.
Garlic
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.
Pidä koko lista yhdessä paikassa
TempoLife kirjaa lisäravinteet ruoan, unen ja sen viereen miltä oikeasti tuntui — joten vastaus kysymykseen ”mitä otat?” on näyttö, ei arvaus.