Green Tea

Other names Camellia Sinensis, Matcha

This nootropic has no healthy human placebo-controlled studies that meet our inclusion criteria. Negative side effects can occur if used carelessly, so make sure you’re aware of the risks of Green Tea.

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Risks

The legality and side effects of Green Tea

You should always consider the risks of a nootropic before you use it.

Side effects

Interactions

Supplements and drugs can interact with Green Tea to increase or decrease the positive or negative effects you experience. If you are already using any supplements or drugs, speak with your trusted medical professional before you experiment with Green Tea. To learn more about the potential interactions between Green Tea and other substances, use interaction-checker.

Legality

Is your country not included? Learn how to find out if Green Tea is legal in your country.

Legality Disclaimer

The contents herein are not legal advice or a substitute for legal counsel. information is not intended to create, and receipt of it does not constitute, an attorney-client relationship. While we have done our best to be as accurate as possible in the information we convey to you about the legality of nootropics, there is a risk for inaccuracies and errors. If you’re uncertain about the legality of any of your actions, contact a legal counsel or your local authorities governing the legality of various substances you may want to use/import/travel with.

FAQ

Frequently asked questions about Green Tea

Which are the active ingredients in green tea?

Theanine (7.9 ± 3.8 mg/200mg cup)
Caffeine (15mg/100ml[6])
Green tea catechins

Studies

Studies conducted on the effects of Green Tea in healthy humans

No placebo-controlled trials on healthy humans that meet our inclusion criteria have been conducted on Green Tea.

Stress-Reducing Function of Matcha Green Tea in Animal Experiments and Clinical Trials

placebo-controlled

Summary

"Anxiety, a reaction to stress, was significantly lower in the test-matcha group than in the placebo group."

Green tea effects on cognition, mood and human brain function: A systematic review

systematic review

Summary

"The reviewed studies presented evidence that green tea influences psychopathological symptoms (e.g. reduction of anxiety), cognition (e.g. benefits in memory and attention) and brain function (e.g. activation of working memory seen in functional MRI). The effects of green tea cannot be attributed to a single constituent of the beverage."

Acute effects of tea constituents L-theanine, caffeine, and epigallocatechin gallate on cognitive function and mood: a systematic review and meta-analysis

systematic review and meta-analysis

Summary

There were acute positive effects of green tea constituents L-Theanine and Caffeine on alertness and attention in this systematic review and meta-analysis of 11 randomized placebo-controlled human studies.

Last updated Saturday, June 10, 2023