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Green tea extract
Green tea extract — что европейская монография реально поддерживает, для чего это не предназначено, форма и срок применения, побочные эффекты и 3 взаимодействиеs с лекарствами, задокументированное для него.
Это справочная страница, не диагноз и не рецепт. Травяные продукты — настоящая фармакология: у них есть эффекты, побочные действия и взаимодействия с лекарствами. Расскажите врачу и фармацевту обо всём, что принимаете, включая чаи и добавки, и никогда не отменяйте и не меняйте назначенное лекарство из-за прочитанного здесь.
Что это
Camellia sinensis (L.) Kuntze — leaf; concentrated catechin extracts
Местные названия в регионе, который обслуживает этот сайт:roheline tee (ET) · vihreä tee (FI) · зелёный чай (RU).
Сгруппировано здесь под Kitchen spices with a safety story. Регуляторная позиция:Drinking tea is a food; concentrated extracts are food supplements with an EFSA safety assessment.
Что поддерживают доказательства
Зарегистрированное показание: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.
Для чего это не предназначено
Weight loss, and any liver purpose whatsoever — this is one of the botanicals most likely to injure a liver, not support one.
Форма, сила и как долго
Brewed leaf tea (a food), and concentrated catechin extracts in capsules, often combined with caffeine in "fat burner" products.
Срок.For extracts, the honest answer is that no safe long-term intake has been established.
На этой странице намеренно нет граммов. Часть растения, растворитель экстракции и соотношение сырьё–экстракт вместе определяют препарат, и число от одного не описывает другой. Обоснование изложено на узле; количество, которое относится к вам, напечатано на пачке в руках, и фармацевт прочитает его с вами.
Побочные эффекты
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.
Кому следует избегать
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.
Взаимодействия с лекарствами
| Лекарство или вещество | Что описано |
|---|---|
| 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. |
Обратный вид — начать с лекарства, а не с растения — в справочнике взаимодействий лекарств, пищи и алкоголя, и сведено для каждого растения на этом сайте.
Как еда
Это также на кухне, поэтому цифры питания стоит иметь рядом с фармакологией: см. страницу данных о пище по калориям и веществам на 100 г и порцию. Кулинарные количества и лекарственные препараты — разное воздействие, и разница обычно вся история безопасности.
Источники: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· проверено2026-09-06
Частые вопросы
Для чего применяют 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.
Работает ли green tea extract?
Оценено здесь 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.
Сколько green tea extract принимать?
Этот справочник не печатает граммы, потому что они не переносятся между препаратами разной силы экстракта. Честно можно сказать форму и срок: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.
Какие побочные эффекты у green tea extract?
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.
Взаимодействует ли green tea extract с лекарствами?
Да — задокументировано дляLiver load, Iron, Anticoagulants, warfarin. Каждое описано на этой странице, со ссылкой на лекарственный справочник, где он есть.
Другие вkitchen 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.
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