Theanine

What Is Theanine? Does boosting your mental focus and sharpening your concentration while still relaxing your nervous system seem impossible? Well, Theanine does just that! Theanine (or L-Theanine) is an amino acid naturally found in green tea. It’s unique in that it promotes relaxation while increasing focus and concentration. In fact, theanine is both a natural relaxant and sedative, that does not affect motor skills or make you feel tired and groggy; therefore, it both increases your mental alertness and promotes relaxation. Read more >

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  1. L-Theanine 250mg - 90 V-Caps

    There’s a reason why drinking a cup of tea is so relaxing. True tea (made from the Camella sinensis plant) contains L-theanine, an amino acid that promotes mental calmness. A purified form of L-theanine supported by more than 50 studies demonstrating its safety and efficacy. It safely relaxes but won’t cause drowsiness. Just 1 capsule of Natural Factor's Stress-Relax Mental Calmness provides 25...

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  2. Relaxen Day - 60 Caps

    A non-drowsy relaxant, Relaxen Day Formula from Adrien Gagnon can decrease stress and its mental symptoms during the day to keep your mind clear and alert despite stress. The L-theanine present in this formula helps reduce the psychological response to stress in addition to helping with concentration. Relaxen Jour is ideal for stressful events where you have to perform mentally. Theanine is ext...

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  3. Relaxen Night - 100 Caps

    Relaxen Night is a formula specially designed by Adrien Gagnon to act as a gentle sedative that appeases nervousness caused by stress, fatigue, or overworking, prioritize a peaceful night of sleep for people who have difficulty falling asleep due to nervousness. Relaxen Night is a formulation containing several plants with relaxing benefits of Valerian that helps the body to fall asleep by redu...

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  4. L-Theanine with Magnesium - 90 V-Caps + BONUS

    When you’re looking for a supplement that helps you relax without making you feel drowsy, then CanPrev’s L-Theanine with Magnesium just might be the answer. CanPrev’s L-Theanine provides an impressive 250 mg of pure L-theanine along with 20 mg of magnesium bisglycinate to promote a state of relaxation so that you can stay focused and productive. As a psychoactive substance, L-Theanine can easil...

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  5. Ultra L-Theanine 400mg - 75 V-Caps

    Reduce stress with Naka Platinum Ultra L-Theanine stress solution! Promote tranquility, relaxation and a restful sleep with this naturally non-drowsy formulation. Enhance mood, lower stress, improve learning ability and performance, plus increase mental focus and concentration! L Theanine is a safe and fantastic product that improves brain function while decreasing anxiety. Ultra L-Theanine is ...

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  6. Ultra L-Theanine 400mg - 150 V-Caps

    Reduce stress with Naka Platinum Ultra L-Theanine stress solution! Promote tranquility, relaxation and a restful sleep with this naturally non-drowsy formulation. Enhance mood, lower stress, improve learning ability and performance, plus increase mental focus and concentration! L Theanine is a safe and fantastic product that improves brain function while decreasing anxiety. Ultra L-Theanine is ...

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  7. L-Theanine Double Strength 200mg - 60 V-Caps

    Helping to to temporarily promote relaxation, NOW® has formulated their L-Theanine Double Strength 200mg  with the addition of Inositol. L-Theanine is an amino acid naturally found in green tea. L-Theanine promotes relaxation without the drowsiness or negative side effects associated with other calming agents. L-Theanine also supports healthy cardiovascular function through this relaxing effect...

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  8. L-Theanine 250mg - 60 V-Caps

    Studies have also shown L-theanine to encourage alpha wave activity associated with a state of serenity and mental clarity. New Roots Herbal L-Theanine provides you with 250mg that can be supplemented once daily. L-Theanine is the amino acid critical for its calming influence on cognitive function. It crosses the blood-brain barrier to help establish a state of relaxation while maintaining ale...

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  9. L-Theanine 250mg - 120 V-Caps

    New Roots Herbal L-Theanine may help promote mental clarity and concentration. Studies have also shown L-theanine to encourage alpha wave activity associated with a state of serenity and mental clarity. New Roots Herbal L-Theanine provides you with 250mg that can be supplemented once daily. L-Theanine is the amino acid critical for its calming influence on cognitive function. It crosses the bl...

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  10. L-Theanine - 60 V-Caps

    Nutridom Pure L-Theanine provides 250 mg of pure L-Theanine per capsule, naturally sourced from decaffeinated green tea leaves. This vegan-friendly, non-GMO supplement promotes relaxation, mental clarity, and focus without causing drowsiness. By increasing alpha brainwave activity, L-Theanine helps reduce stress and anxiety, supports mood, enhances cognitive performance, and may improve sleep q...

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  11. L-Theanine With Magnesium 250mg - 60 V-Caps

    Orange Naturals L-Theanine with Magnesium 250 mg is a calming formula designed to support relaxation, focus, and overall balance. Featuring L-theanine, an amino acid naturally found in green tea, it helps promote a calm, alert state without causing drowsiness. Paired with magnesium, a key mineral involved in many body processes, this blend also supports muscle relaxation and nervous system func...

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  12. L-Theanine - 60 V-Caps

    This unique amino acid blend supports relaxation without causing drowsiness and may help manage moderate or occasional stress. L-Theanine also supports nervousness and irritability. Pure Encapsulations ensures this formula is highly bioavailable and is free from contaminants, metals, solvents, GMOs and well-known allergens like gluten and dairy. [VCAPS]

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  13. L-Theanine 250mg - 75 V-Caps

    BUSY PEOPLE CAN REDUCE STRESS SAFELY WITH L-THEANINE! Reduce stress with Promise L-Theanine stress solution! Promote tranquility, relaxation and a restful sleep with this naturally non-drowsy formulation. Enhance mood, lower stress, improve learning ability and performance, plus increase mental focus and concentration! L Theanine is a safe and fantastic product that improves brain function whi...

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  14. L-Theanine 250mg - 150 V-Caps

    Preferred Nutrition L-Theanine 250 mg offers gentle, one-per-day support for relaxation and mental calm without causing drowsiness. L-theanine is a naturally occurring amino acid found in green tea and is valued for its ability to promote a relaxed yet focused state. This free-form, fermented L-theanine is absorbed quickly and is non-habit-forming, making it suitable for both occasional and dai...

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  15. L-Theanine - 60 V-Caps

    Xymogen L-Theanine offers a natural way to support relaxation and mental clarity. Derived from green tea, this amino acid promotes a calm, focused state without causing drowsiness, making it suitable for daily use. It helps support cognitive alertness, mood balance, and overall neurological wellness while also contributing to healthy liver function and detoxification. Each two-capsule dose prov...

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  16. L-Theanine + Caffeine - 60 V-Caps

    Support your focus with Organika L-Theanine + Caffeine, a balanced formula designed for steady, sustained energy. Combining plant-based caffeine from yerba mate with L-theanine, it helps promote alertness while supporting a calm, focused state. This pairing offers a smoother energy experience without the sharp peaks often associated with caffeine alone. Ideal for work, study, or busy days, thes...

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Theanine Supplements

Does boosting your mental focus and sharpening your concentration while still relaxing your nervous system seem impossible? Well, Theanine does just that!

Theanine (or L-Theanine) is an amino acid naturally found in green tea. It’s unique in that it promotes relaxation while increasing focus and concentration. In fact, this amino acid is both a natural relaxant and sedative, that does not affect motor skills or make you feel tired and groggy; therefore, it both increases your mental alertness and promotes relaxation. It stimulates the release of neurotransmitters in your brain, including GABA, the brain’s primary inhibitory neurotransmitter. Because it isn’t required by the body, it is considered a nonessential amino acid. These supplements; however, can be extremely useful as natural anxiolytics for mood disorders and chronic stress, as well as to help improve mental function and other cognitive health conditions.

Benefits of Theanine

Who Needs Theanine?

Naturopaths often recommend this nutrient to boost mental alertness, focus, concentration and mood-based symptoms. Some of the most common uses for theanine include; anxiety, cognitive disorders, mood-related disorders, sleep difficulties & insomnia.

Theanine Supplements

Potencies

Theanine supplements are typically recommended in a dosing range of 100–200mg twice daily, but the dose may be higher depending on the condition (400-500 mg daily).

Formats

These supplements are available in a variety of formats, including capsules, liquid gels and tablets. Theanine can be taken either with meals or on an empty stomach.

When supplementing with Theanine for mood disorders, consider taking it with GABA or 5 HTP to increase serotonin boost and help balance stress.

If you’re using this nutrient to support sleep issues or insomnia, consider taking with magnesium to promote better relaxation before bed.

Final Thoughts

These supplements generally come in the form of L-theanine, which is considered the bioavailable form of the amino acid. Supplements are also available in Suntheanine form - a patented theanine made via fermentation that is said to be more potent and faster-acting. Because these supplements are often marketed for mental alertness, be sure to check the label to make sure caffeine has not been added, which would adversely affect anxiety, stress and sleep.

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