Skip to product information
1 of 4

NuSci L-Theanine Pure Powder (227g)

NuSci L-Theanine Pure Powder (227g)

Regular price £50.16 GBP
Sale price £50.16 GBP Regular price
Save % Sold out

HOT PRODUCT | LOW STOCK

Carefully selected from trusted wellness brands

Free worldwide delivery

Secure checkout

Buy More Save More!

NuSci L-Theanine Pure Powder (227g)

Regular price £50.16
Sale price £50.16 Regular price
Save % Sold out
  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Tracked worldwide delivery. Estimated arrival between - and -.

Key Features of NuSci L-Theanine Pure Powder

NuSci delivers a high-quality L-Theanine powder with several important attributes:

  • Pure Ingredient: No additives, fillers, or binders—just 100% L-Theanine.
  • Fine White Powder: Easy to mix and dissolve in liquids.
  • Slightly Sweet Flavour: Makes it more pleasant when added to beverages or smoothies.
  • Water Soluble: Dissolves quickly in water, juice, or other drinks.
  • Versatile Uses: Suitable for direct consumption or as a raw material in research, development, and product formulation.
  • Fresh Supply: Typically 1.5 to 2.5 years of shelf life remaining upon receipt.

What Is L-Theanine and Why Uses It?

L-Theanine is a naturally occurring amino acid most commonly found in green and black tea leaves. Unlike many other amino acids, it does not build proteins but instead influences brain chemistry in a unique way. Many individuals turn to L-Theanine for its potential to promote a sense of calm and relaxation without drowsiness. This makes it a popular choice for those looking to manage daily stress, improve focus, or enhance sleep quality. As a pure powder, NuSci L-Theanine offers versatility and precision for personal uses or formulation purposes.

Potential Benefits of L-Theanine

L-Theanine has been studied for its effects on mental state and cognitive function. While research is ongoing, several potential benefits are often noted:

  • Promotes Relaxation: L-Theanine may help increase alpha brain waves, which are associated with a relaxed but alert state.
  • Supports Focus: Some users report improved concentration and attention when combining L-Theanine with caffeine.
  • May Improve Sleep Quality: By reducing stress and promoting calm, it may contribute to better sleep onset and quality.
  • Antioxidant Support: As an amino acid, L-Theanine also exhibits antioxidant properties that help protect cells from oxidative stress.

These statements describe general properties of L-Theanine and do not imply specific health outcomes.

How to Uses L-Theanine Powder

Because this is a pure powder, you can incorporate it into your routine in several ways:

  • Beverages: Stir a small scoop into water, tea, coffee, or juice. It dissolves easily and has a mild, slightly sweet flavour.
  • Smoothies and Shakes: Blend into your favourite smoothie or protein shake for an extra wellness boost.
  • Formulation and R&D: Ideal for researchers, product developers, or manufacturers creating custom supplements or functional foods.

A typical serving size for personal uses ranges from 100 mg to 200 mg, but you can adjust based on individual needs. Always start with a smaller amount to assess tolerance.

Quality and Purity

NuSci is committed to delivering pure, reliable ingredients. This L-Theanine powder is produced without any unnecessary additives, ensuring you receive a clean product suitable for a variety of applications. Whether you are a health enthusiast or a professional formulator, you can count on consistent quality from a trusted brand.

Frequently Asked Questions

Is L-Theanine safe?

L-Theanine is generally considered safe for most people when taken in appropriate amounts. However, if you are pregnant, nursing, or have a medical condition, consult your health care provider before uses.

Can I take L-Theanine with other supplements?

Yes, L-Theanine is often used alongside caffeine or other nootropics. It is also commonly taken with magnesium or melatonin for sleep support. As with any supplement combination, it is wise to consult a professional.

How should I store the powder?

Store in a cool, dry place away from direct sunlight. Keep the container tightly sealed to maintain freshness.

These statements have not been evaluated by the Medicines and Health care products Regulatory Agency (MHRA). This product is not intended to diagnose, treat, or prevent any disease.

Worldwide Delivery

Orders are prepared with clear worldwide delivery expectations from the product page through dispatch. Delivery estimates are shown before checkout where available, and tracking details are sent after the order leaves fulfilment so customers can follow the parcel and plan around the expected arrival window.

Returns and support

UK Vitality Vitamins offers straightforward post-purchase support with a clear returns process. Please check the store returns policy before sending an item back, as final eligibility may depend on product condition, packaging integrity and whether the return request is started within the stated return window.

How to choose

Use the product description, ingredient list, serving information and available variants to compare supplement options. Always check the full ingredient list, directions for use and any allergen information on the product packaging before taking any food supplement.

Ingredients and important information

Ingredient lists and formulations may vary by batch or supplier. Always check the product packaging for the most up-to-date information. Food supplements should not be used as a substitute for a varied and balanced diet and a healthy lifestyle. Do not exceed the recommended daily intake. If you are pregnant, nursing, taking medication or have a medical condition, consult your healthcare professional before use.

View full details
  • Tracked worldwide delivery

    Clear delivery messaging for shoppers worldwide.

  • Secure checkout

    Secure checkout.

  • Clear returns

    Returns information is written plainly before purchase.

  • Trusted brands

    Carefully selected supplements from established wellness brands.

Supplement guide

NuSci L-Theanine Pure Powder (227g) at UK Vitality Vitamins

Key Features of NuSci L-Theanine Pure PowderNuSci delivers a high-quality L-Theanine powder with several important attributes: Pure Ingredient: No additives, fillers, or binders—just 100% L-Theanine. Fine White Powd...

Category Amino Acid Supplements
Delivery area Worldwide
Checkout Secure checkout
Brand NuSci
Price £50.16
Availability In stock
amino acidcalmdietary supplementfocusformulationL-Theanineno additivesNuScipure powderR&D

How to choose if this supplement fits your routine

Read the ingredient list, check the serving size and directions for use. Consider the supplement form (tablet, capsule, liquid) and whether it suits your dietary requirements. Food supplements should not be used as a substitute for a varied and balanced diet and a healthy lifestyle.

What UK Vitality Vitamins shows before checkout

Every product page displays price, availability, variant choices, ingredient information, directions for use, allergen details, worldwide delivery expectations and secure checkout — so you can make an informed decision quickly.

Questions about NuSci L-Theanine Pure Powder (227g)

Is NuSci L-Theanine Pure Powder (227g) available with worldwide delivery?

Yes. This product is currently available on UK Vitality Vitamins with free worldwide delivery.

How should I compare this with similar supplements?

Compare the active ingredients, serving size, number of servings per container, supplement form, brand reputation and price per serving. Check allergen information if relevant to your dietary needs.

Where can I find delivery and returns information?

Delivery information is shown near the add to basket area. Returns guidance is available on the product page and full terms are covered in the store returns policy.

Supplement shopping with clarity

UK Vitality Vitamins product pages display ingredients, directions, allergen details and delivery information clearly — so you can compare supplements and make informed choices quickly.