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L-Theanine
  • L-Theanine
  • L-Theanine
  • L-Theanine
  • L-Theanine
Third Party Test Report
L-Theanine

L-Theanine 200mg

Pack Size
Out of stock
L-Theanine
120 Capsules

90 Day Money Back Guarantee

Tracked and Insured

Reduce Stress
Reduce Stress
Cognitive Function
Cognitive Function
Capsule Size
200mg
Daily Dose
1-2 Capsules
Shelf Life
2 Years
Ingredients per capsule
200mg L-Theanine
NO Artificial Ingredients, Wheat, Gluten, Yeast, Soy, Corn, Dairy or Preservatives.
Third Party Test Report
  • Highest Purity
  • 3rd Party Tested
  • 90 Day Guarantee

What are L-Theanine Supplements?

L-Theanine supplements provide L-theanine, an amino acid primarily found in tea leaves, especially green tea. Known for its calming effects, L-theanine promotes relaxation without causing drowsiness by increasing the production of neurotransmitters like GABA, serotonin, and dopamine, which help regulate mood and stress levels. It also enhances alpha brain wave activity, associated with a state of relaxed alertness. L-Theanine supplements are often used to reduce anxiety, improve sleep quality, and enhance cognitive function, including focus and attention. Additionally, L-theanine can help mitigate the jittery effects of caffeine, making it a popular supplement for promoting mental clarity and overall well-being.

The Science Behind L-Theanine Supplements

The science behind L-Theanine supplements involves its ability to cross the blood-brain barrier and affect brain chemistry. L-Theanine increases neurotransmitters like GABA, serotonin, and dopamine, regulating mood, stress, and sleep. It promotes relaxation without drowsiness by enhancing alpha brain wave activity. L-Theanine also reduces caffeine-induced jitteriness, enhancing mental clarity. Its neuroprotective properties support cognitive function and may protect against cognitive decline, highlighting its benefits for relaxation, cognitive enhancement, and overall brain health.

L-Theanine
Benefits

  • Promotes Relaxation

    Enhances relaxation without causing drowsiness.

  • Reduces Anxiety

    Lowers anxiety levels by increasing calming neurotransmitters.

  • Improves Sleep Quality

    Supports better sleep by promoting relaxation.

  • Enhances Focus

    Boosts focus and attention by increasing alpha brain wave activity.

  • Mitigates Caffeine Jitters

    Reduces the jittery effects of caffeine, promoting calm alertness.

  • Supports Cognitive Health

    Protects against age-related cognitive decline and enhances overall brain function.

How L-Theanine Works

1

Crosses the Blood-Brain Barrier

L-Theanine easily crosses the blood-brain barrier, allowing it to directly affect brain function.

2

Increases Neurotransmitter Levels

It boosts the production of calming neurotransmitters like GABA, serotonin, and dopamine, which help regulate mood, stress, and sleep, promoting relaxation without drowsiness.

3

Enhances Alpha Brain Waves

L-Theanine increases alpha brain wave activity, associated with a state of relaxed alertness, improving focus and attention while reducing the jittery effects of caffeine.

Highest Quality Supplements

  • No Artificial Color
  • No Artificial Flavor
  • No Artificial Sweetener
  • No Gluten
  • No Soy
  • Non-GMO
  • No Dairy

Questions, anyone?

Need help with something? Here are our most frequently asked questions.

  • What is L-Theanine and how does it work?

    L-Theanine is a naturally occurring amino acid primarily found in green tea leaves. It is renowned for its ability to promote a sense of calm without causing drowsiness. L-Theanine is believed to cross the blood-brain barrier and support the production of alpha brain waves, which are associated with a state of "wakeful relaxation." It also plays a key role in supporting the balance of neurotransmitters such as GABA, serotonin, and dopamine, which are central to mood support and the body’s response to daily stress.

  • What are the potential benefits of taking L-Theanine supplements?

    L-Theanine is designed to support mental performance and emotional balance. Potential benefits include:

    • Focus Support: When paired with caffeine, it may help support attention and focus while smoothing out the stimulation often associated with coffee.
    • Relaxation: It helps support the body's response to daily pressures, promoting a sense of calm.
    • Restful Sleep: By promoting relaxation before bed, it can help quiet the mind and prepare the body for a restful night's sleep.
    • Mental Clarity: It aids in maintaining a sense of alertness and clarity during the day.

  • How long does it take to notice the effects?

    Unlike some supplements that require weeks to build up in the system, L-Theanine is often fast-absorbing. Many users report feeling a sense of calm and supported focus within 30 to 60 minutes of ingestion. For sleep support, taking it approximately 45 minutes before bedtime is generally recommended. Individual responses can vary, so finding the optimal timing for your routine is key.

  • Are L-Theanine supplements tested for purity and quality?

    Yes, at Longevity Store, all our supplements undergo rigorous testing in certified labs to ensure they meet the highest standards of purity and quality. Our L-Theanine is tested to ensure it is free from harmful additives, heavy metals, and contaminants. This commitment to quality ensures that you are getting a clean, potent product designed to support your health goals effectively.

  • Are there any side effects of taking L-Theanine?

    L-Theanine is generally well-tolerated and is considered non-drowsy and non-habit forming. In rare cases, some users may experience mild digestive discomfort. It is important to always follow the recommended dosage on the label. If you are pregnant, nursing, or have a specific medical condition, we recommend consulting your healthcare provider before adding this supplement to your routine.

  • Can I take L-Theanine with other supplements or medications?

    L-Theanine is widely known for its synergy with caffeine (often called "smart caffeine") and is generally safe to take with most other supplements. However, if you are currently taking prescription medications, particularly those for blood pressure or mood support, it is best to consult with your doctor to ensure there are no potential interactions.

Customers praised this supplement for providing "calm focus without the jitters" when paired with coffee. Shoppers reported it helped manage anxiety, improve sleep, and enhance productivity. Many noted "smooth, steady focus" and appreciated the gentle relaxation without drowsiness. Highly effective for balancing caffeine effects.

  • 5 stars: 15 (60%)
  • 4 stars: 8 (32%)
  • 3 stars: 2 (8%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
O
Ophelia K.

Calm focus without the jitters.

P
Percy

Pair it with my morning coffee and I'm alert but not wired. Perfect combo for getting through busy days.

C
Cordelia J.

Finally found my chill.

W
Wilbur

Used to get anxious and scattered after caffeine. Adding L-Theanine's completely changed that smooth, steady focus now.

E
Emma I.

Great for winding down.

S
Stanley

Tea lover here and it makes total sense this comes from tea leaves. Pure relaxation in supplement form.

R
Romilly H.

Mind feels quieter but sharper.

S
Sidney

Deadline pressure used to frazzle me completely. Now I'm calm and productive game changer for work stress.

O
Ottilie G.

Lovely gentle relaxation.

B
Barnaby

Take one before bed and I'm drifting off peacefully. No grogginess in the morning either.

L
Lettice F.

Sorted my caffeine jitters completely.

M
Monty

Discovered this through a podcast on nootropics. The calm alertness is real wish I'd found it years ago.

P
Primrose E.

Perfect evening supplement.

R
Reggie

Anxiety made focusing impossible. L-Theanine lets me concentrate without that underlying tension. Absolute lifesaver.

D
Dulcie D.

Natural and effective, spot on.

B
Bertie

Coffee used to make my heart race. Now I take this alongside and get all the benefits without the downsides.

M
Millicent C.

Sleep routine's transformed.

C
Chester

Exam revision was stressing me out massively. This kept me focused and calm through the whole period.

H
Honoria B.

Genuinely helps me stay centred.

D
Digby

Work in a hectic office and needed something to take the edge off. This does exactly that without making me drowsy.

L
Lavinia A.

Great for calm productivity.

R
Rupert

Racing thoughts at night were driving me mad. L-Theanine before bed and my mind finally settles.

E
Eugenie Z.

Subtle but really noticeable.

C
Cosmo

Partner's much less irritable since starting these. Calmer household all round we're both converts now.

I
Isolde Y.

As someone who drinks loads of coffee, this balances everything out beautifully. Alert and focused but never frantic or anxious anymore.

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