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L-Theanine – natural supplement for balance and well-being

64 products

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

NOW Foods L-Theanine Pure Powder 28g – NOW Foods packaging
-21%

NOW Foods

NOW Foods L-Theanine Pure Powder 28g

€29.24€36.91

Delivery 1–2 days

Now Foods - L-Glutamine Powder (170g) – NOW Foods packaging

NOW Foods

Now Foods - L-Glutamine Powder (170g)

€17.36

Delivery 1–2 days

Now Foods - L-Theanine With Decaf Green Tea, 100mg - 90 Vcaps – NOW Foods packaging

NOW Foods

Now Foods - L-Theanine With Decaf Green Tea, 100mg - 90 Vcaps

€17.36

Delivery 1–2 days

Life Extension Theanine XR Stress Relief 400 mg - 30 tablets – Life Extension packaging
-11%

Life Extension

Life Extension Theanine XR Stress Relief 400 mg - 30 tablets

€24.67€27.87

Delivery 1–2 days

Health Labs Care L-glutamine Complex 35 billion – Health Labs Care packaging

Health Labs Care

Health Labs Care L-glutamine Complex 35 billion

€38.37

Backorder · 5–7 business days

Glutamine Powder 500g – OstroVit packaging
-10%

OstroVit

Glutamine Powder 500g

€16.45€18.27

Delivery 1–2 days

7Nutrition - Glutamine Max 1000mg - 120 capsules – 7 Nutrition packaging

7 Nutrition

7Nutrition - Glutamine Max 1000mg - 120 capsules

€14.62

Backorder · 5–7 business days

Olimp Labs - Glutamine 1400 Mega Caps – Olimp Labs packaging
-20%

Olimp Labs

Olimp Labs - Glutamine 1400 Mega Caps

€38.37€48.06

Delivery 1–2 days

Jarrow Formulas - L-Glutamine, 1000mg - 100 Tablets – Jarrow Formulas packaging

Jarrow Formulas

Jarrow Formulas - L-Glutamine, 1000mg - 100 Tablets

€21.01

Backorder · 5–7 business days

Scitec Nutrition - Mega Glutamine 1000 mg Capsules – Scitec Nutrition packaging

Scitec Nutrition

Scitec Nutrition - Mega Glutamine 1000 mg Capsules

€25.58

Backorder · 5–7 business days

7Nutrition - Glutamine (Unflavored - 300g) – 7 Nutrition packaging

7 Nutrition

7Nutrition - Glutamine (Unflavored - 300g)

€17.36

Backorder · 5–7 business days

Weider - Premium L-Glutamine - 400g – Weider packaging
-9%

Weider

Weider - Premium L-Glutamine - 400g

€29.24€32.25

Delivery 1–2 days

MuscleTech - Platinum 100% Glutamine - 300g – Muscletech packaging

Muscletech

MuscleTech - Platinum 100% Glutamine - 300g

€18.27

Backorder · 5–7 business days

Amix - L-Glutamine - 1000g – Amix packaging

Amix

Amix - L-Glutamine - 1000g

€42.03

Backorder · 5–7 business days

OstroVit Natural Glutamine 500 g powder – OstroVit packaging
-17%

OstroVit

OstroVit Natural Glutamine 500 g powder

€16.45€19.73

Delivery 1–2 days

Olimp Labs - L-Glutamine Powder 500 g – Olimp Labs packaging
-19%

Olimp Labs

Olimp Labs - L-Glutamine Powder 500 g

€17.36€21.38

Delivery 1–2 days

Jarrow Formulas L-Glutamine 750mg 120 Vegetable Capsules – Jarrow Formulas packaging
-23%

Jarrow Formulas

Jarrow Formulas L-Glutamine 750mg 120 Vegetable Capsules

€18.27€23.75

Delivery 1–2 days

NOW Foods - L-Theanine, 200mg (90 Vcaps) – NOW Foods packaging

NOW Foods

NOW Foods - L-Theanine, 200mg (90 Vcaps)

€27.41

Backorder · 5–7 business days

OstroVit - L-Theanine + L-Tyrosine - 90 capsules – OstroVit packaging

OstroVit

OstroVit - L-Theanine + L-Tyrosine - 90 capsules

€11.88

Delivery 1–2 days

Doctor's Best L-Theanine 150mg - 90 Veggie Caps – Doctor's Best packaging

Doctor's Best

Doctor's Best L-Theanine 150mg - 90 Veggie Caps

€31.98

Backorder · 5–7 business days

Doctor's Best - L-Glutamine Powder 300g – Doctor's Best packaging

Doctor's Best

Doctor's Best - L-Glutamine Powder 300g

€24.67

Backorder · 5–7 business days

Yamamoto - Glutamine Peptide 500 mg tablets – Yamamoto Research packaging
-13%

Yamamoto Research

Yamamoto - Glutamine Peptide 500 mg tablets

€42.94€49.24

Delivery 1–2 days

Weider L-Glutamine 100% Pure Free Form – 400g – Weider packaging
-25%

Weider

Weider L-Glutamine 100% Pure Free Form – 400g

€31.06€41.48

Delivery 1–2 days

Apex Formulas Glutamine 300g - Pure Glutamine Powder, 60 Servings – Apex Formulas packaging

Apex Formulas

Apex Formulas Glutamine 300g - Pure Glutamine Powder, 60 Servings

€16.45

Backorder · 5–7 business days

Healthy Origins - L-Glutamine - 300g Powder – Healthy Origins packaging

Healthy Origins

Healthy Origins - L-Glutamine - 300g Powder

€26.49

Backorder · 5–7 business days

Weider - L-Glutamine - 300g – Weider packaging

Weider

Weider - L-Glutamine - 300g

€17.36

Backorder · 5–7 business days

Revive Glutamine - 300g powder, 10g per serving – Revive packaging

Revive

Revive Glutamine - 300g powder, 10g per serving

€23.75

Delivery 1–2 days

Prosupps Glutamine 300g Powder – Prosupps packaging

Prosupps

Prosupps Glutamine 300g Powder

€17.36

Backorder · 5–7 business days

Olimp Labs Glutamine Mega Caps 1000 mg – 120 capsules – Olimp Labs packaging

Olimp Labs

Olimp Labs Glutamine Mega Caps 1000 mg – 120 capsules

€18.27

Backorder · 5–7 business days

Mutant - Glutamine - 300g powder – Mutant packaging
-3%

Mutant

Mutant - Glutamine - 300g powder

€16.45€16.99

Delivery 1–2 days

Yango L-Glutamine 90 capsules – Yango packaging

Yango

Yango L-Glutamine 90 capsules

€14.25

Delivery 1–2 days

Solgar L-Glutamine 500 mg - 100 Vegetable Capsules – Solgar packaging
-9%

Solgar

Solgar L-Glutamine 500 mg - 100 Vegetable Capsules

€23.75€26.22

Delivery 1–2 days

Swanson Pure Energy - 60 Vegetarian Capsules – Swanson packaging
-77%

Swanson

Swanson Pure Energy - 60 Vegetarian Capsules

€21.01€92.28

Delivery 1–2 days

OstroVit L-Theanine 200 mg - 90 capsules – OstroVit packaging

OstroVit

OstroVit L-Theanine 200 mg - 90 capsules

€9.14

Delivery 1–2 days

Scitec Nutrition L-Glutamine 5g Powder – Scitec Nutrition packaging
2 variants

Scitec Nutrition

Scitec Nutrition L-Glutamine 5g Powder

from€220.00

Backorder · 5–7 business days

BioTechUSA - L-Glutamine 500g powder – BioTechUSA packaging
2 variants

BioTechUSA

BioTechUSA - L-Glutamine 500g powder

from€250.00

Delivery 1–2 days

Kevin Levrone Gold Glutamine 300g – Kevin Levrone packaging
-22%

Kevin Levrone

Kevin Levrone Gold Glutamine 300g

€16.45€21.01

Delivery 1–2 days

Amix - Coffi Time - 90 capsules – Amix packaging

Amix

Amix - Coffi Time - 90 capsules

€20.10

Backorder · 5–7 business days

Nature's Way L-Theanine 100 mg - 60 Vegetable Capsules – Nature's Way packaging

Nature's Way

Nature's Way L-Theanine 100 mg - 60 Vegetable Capsules

€20.10

Backorder · 5–7 business days

Nutriversum L-Glutamine 500g - Pure Amino Acid Powder – Nutriversum packaging

Nutriversum

Nutriversum L-Glutamine 500g - Pure Amino Acid Powder

€18.27

Delivery 1–2 days

What is L-Theanine?

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.

Benefits 26amp; Uses

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:

  • Support for mental relaxation: L-Theanine can contribute to a calmer mood without negatively affecting alertness.
  • Promote focus and concentration: Many use L-Theanine to maintain sharpness and presence during workdays or studies.
  • Complement to caffeine: Often combined with caffeine to reduce any anxiety or restlessness that caffeine may cause.
  • Natural origin: Since L-Theanine comes from green tea, it can be an attractive option for those seeking natural supplements.
  • Flexible dosage forms: Available in capsules, tablets, and powder, making it easy to tailor to individual needs.

How to choose the right L-Theanine

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:

  • Check the dosage: Common doses often range between 100 and 200 mg per serving, but adjust according to your needs and any recommendations.
  • Quality and purity: Choose products free from unnecessary additives and with clear information about ingredients and manufacturing processes.
  • Supplement form: Consider whether you prefer capsules for easy dosing or powder that can be mixed into drinks.
  • Certifications: Products with quality and safety certifications can provide extra assurance.
  • Reviews and feedback: Read customer reviews to get an idea of the product’s effect and user-friendliness.
  • Combination with other supplements: If you use other products, such as caffeine supplements or adaptogens, some L-Theanine products may suit you better than others.

By considering these factors, you can find the best L-Theanine supplement for your specific needs.

Popular variants

L-Theanine is available in several forms and variants that make it easy to find a suitable supplement:

  • Capsules: One of the most popular forms, easy to dose and carry.
  • Tablets: Similar to capsules but may contain different fillers and binders depending on the manufacturer.
  • Powder: L-Theanine in powder form can be mixed into water, juice, or smoothies. Offers flexibility in dosing and use.
  • Combination products: L-Theanine is often combined with caffeine or other amino acids and adaptogens for specific effect profiles.
  • Purity level: Some products offer L-Theanine with extra high purity or organic origin, which may be of interest to the quality-conscious.

Frequently asked questions about L-Theanine

What is the difference between L-Theanine and other amino acids?

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.

Can I take L-Theanine together with caffeine?

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.

How quickly does L-Theanine work after intake?

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.