L-theanine from green tea. Relaxation without drowsiness, often with caffeine.

NOW Foods
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NOW Foods
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NOW Foods
Delivery 1–2 days

NOW Foods
Delivery 1–2 days

NOW Foods
Delivery 1–2 days

Life Extension
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7 Nutrition
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L-Theanine is an amino acid primarily found in the leaves of green tea (Camellia sinensis). It has become popular as a dietary supplement due to its unique properties that distinguish it from other amino acids. L-Theanine affects brain activity in a way that can contribute to a sense of calm and focus without causing drowsiness. This amino acid is often taken as a supplement by individuals seeking to support their mental balance in daily life.
L-Theanine is water-soluble and is rapidly absorbed by the body when consumed, either through tea or as a concentrated supplement. Due to its natural occurrence in tea, L-Theanine is a popular choice for those looking for mild and natural methods to complement their health.
L-Theanine is primarily used to complement a healthy lifestyle and has several appreciated uses. Here are some of the most common reasons many choose L-Theanine as a supplement:
Choosing the right L-Theanine supplement can affect both the experience and the effect. Here are some tips to make an informed choice when buying L-Theanine online:
By considering these factors, you can find the best L-Theanine supplement for your specific needs.
L-Theanine is available in several forms and variants that make it easy to find a suitable supplement:
L-Theanine differs from other amino acids by its unique ability to influence brain activity and promote relaxation without making you tired. It is not a building block for proteins in the same way as many other amino acids, which makes it particularly popular as a supplement.
Yes, L-Theanine is often taken together with caffeine to mitigate any side effects such as nervousness or palpitations. The combination can provide a more balanced and pleasant effect, making it popular among people who want to maintain focus while feeling calmer.
L-Theanine is absorbed relatively quickly in the body and many experience effects within 30 to 60 minutes after intake. The effect can be individual and varies depending on dose and whether you take it on an empty stomach or with food.
For more information about other amino acids, please visit our category Amino Acids or discover more supplements that can complement your health.