• Life Extension Theanine XR™ Stress Relief – L-Theanine – Promotes a Calm Response to Daytime Stress – Non-GMO, Gluten-Free, Vegetarian – 30 Tablets - görsel 1
  • Life Extension Theanine XR™ Stress Relief – L-Theanine – Promotes a Calm Response to Daytime Stress – Non-GMO, Gluten-Free, Vegetarian – 30 Tablets - görsel 2
  • Life Extension Theanine XR™ Stress Relief – L-Theanine – Promotes a Calm Response to Daytime Stress – Non-GMO, Gluten-Free, Vegetarian – 30 Tablets - görsel 3
  • Life Extension Theanine XR™ Stress Relief – L-Theanine – Promotes a Calm Response to Daytime Stress – Non-GMO, Gluten-Free, Vegetarian – 30 Tablets - görsel 4
  • Life Extension Theanine XR™ Stress Relief – L-Theanine – Promotes a Calm Response to Daytime Stress – Non-GMO, Gluten-Free, Vegetarian – 30 Tablets - görsel 5
  • Life Extension Theanine XR™ Stress Relief – L-Theanine – Promotes a Calm Response to Daytime Stress – Non-GMO, Gluten-Free, Vegetarian – 30 Tablets - görsel 6
  • Life Extension Theanine XR™ Stress Relief – L-Theanine – Promotes a Calm Response to Daytime Stress – Non-GMO, Gluten-Free, Vegetarian – 30 Tablets - görsel 7
  • Life Extension Theanine XR™ Stress Relief – L-Theanine – Promotes a Calm Response to Daytime Stress – Non-GMO, Gluten-Free, Vegetarian – 30 Tablets - görsel 8
  • Life Extension Theanine XR™ Stress Relief – L-Theanine – Promotes a Calm Response to Daytime Stress – Non-GMO, Gluten-Free, Vegetarian – 30 Tablets - görsel 9
  • Life Extension Theanine XR™ Stress Relief – L-Theanine – Promotes a Calm Response to Daytime Stress – Non-GMO, Gluten-Free, Vegetarian – 30 Tablets - görsel 10
  • Life Extension Theanine XR™ Stress Relief – L-Theanine – Promotes a Calm Response to Daytime Stress – Non-GMO, Gluten-Free, Vegetarian – 30 Tablets - görsel 11
  • Life Extension Theanine XR™ Stress Relief – L-Theanine – Promotes a Calm Response to Daytime Stress – Non-GMO, Gluten-Free, Vegetarian – 30 Tablets - görsel 12
  • Life Extension Theanine XR™ Stress Relief – L-Theanine – Promotes a Calm Response to Daytime Stress – Non-GMO, Gluten-Free, Vegetarian – 30 Tablets - görsel 13
  • Life Extension Theanine XR™ Stress Relief – L-Theanine – Promotes a Calm Response to Daytime Stress – Non-GMO, Gluten-Free, Vegetarian – 30 Tablets - görsel 14
  • Life Extension Theanine XR™ Stress Relief – L-Theanine – Promotes a Calm Response to Daytime Stress – Non-GMO, Gluten-Free, Vegetarian – 30 Tablets - görsel 15
  • Life Extension Theanine XR™ Stress Relief – L-Theanine – Promotes a Calm Response to Daytime Stress – Non-GMO, Gluten-Free, Vegetarian – 30 Tablets - görsel 16
  • Life Extension Theanine XR™ Stress Relief – L-Theanine – Promotes a Calm Response to Daytime Stress – Non-GMO, Gluten-Free, Vegetarian – 30 Tablets - görsel 17
  • Life Extension Theanine XR™ Stress Relief – L-Theanine – Promotes a Calm Response to Daytime Stress – Non-GMO, Gluten-Free, Vegetarian – 30 Tablets - görsel 18
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Life Extension Theanine XR™ Stress Relief – L-Theanine – ...

Life Extension Theanine XR™ Stress Relief – L-Theanine – ...

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Life Extension Theanine XR™ Stress Relief – L-Theanine – Promotes a Calm Response to Daytime Stress – Non-GMO, Gluten-Free, Vegetarian – 30 Tablets

£40.98
£40.98
Save % Sold out
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Product Overview

Life Extension Theanine XR™ is a dietary supplement designed to help you achieve a calm and focused state of mind during stressful daytime situations. Each tablet contains 200 mg of L-theanine, an amino acid naturally found in green tea, in a unique sustained-release formula that provides extended support throughout the day. Whether you're facing a demanding work project, studying for an exam, or simply navigating a busy schedule, Theanine XR™ can help you maintain composure and concentration without causing drowsiness.

Key Features and Benefits

  • Sustained-Release Technology: The XR (extended release) formulation ensures a gradual release of L-theanine, providing prolonged calming effects over several hours.
  • Promotes Relaxation Without Sedation: L-theanine is known for its ability to increase alpha brain waves, which are associated with a relaxed but alert state. This means you can stay calm and focused without feeling sleepy.
  • Supports Stress Management: By modulating neurotransmitters like GABA and serotonin, L-theanine helps reduce the physiological and psychological effects of stress.
  • Non-GMO, Gluten-Free, Vegetarian: This supplement is suitable for a wide range of dietary preferences and is free from common allergens.
  • Convenient Once-Daily Dosing: With 30 tablets per bottle, a single tablet taken in the morning or as needed provides all-day support.

How to Use

Take one (1) tablet of Life Extension Theanine XR™ daily with or without food, or as recommended by a healthcare professional. For best results, take it in the morning or early afternoon to help manage daytime stress. Do not exceed the recommended dosage. If you are pregnant, nursing, or taking any medications, consult your doctor before use.

Who It Is For

This product is ideal for adults who experience occasional stress and anxiety during the day and are looking for a natural way to stay calm and focused. It is particularly beneficial for professionals, students, and anyone with a demanding lifestyle who needs to maintain mental clarity under pressure. The non-drowsy formula makes it suitable for daytime use, unlike many calming supplements that can cause sedation.

Why Choose This Product

Life Extension is a trusted brand with decades of experience in nutritional science. Theanine XR™ is backed by research on L-theanine's calming properties and formulated with quality ingredients that are non-GMO and gluten-free. The sustained-release technology sets it apart from standard L-theanine supplements, offering longer-lasting support with just one tablet. If you value a clean, effective, and convenient way to manage stress without compromising alertness, this product is an excellent choice.

Technical Details

  • Active Ingredient: L-Theanine (200 mg per tablet)
  • Form: Sustained-release tablet
  • Servings: 30 tablets (30-day supply)
  • Dimensions: 1.75 x 1.75 x 3.33 inches
  • Weight: 0.12 pounds
  • Allergen Information: Non-GMO, gluten-free, vegetarian

Delivery in the United Kingdom

Orders are prepared with clear UK 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

NutriSentra 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.

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Supplement guide

Life Extension Theanine XR™ Stress Relief – L-Theanine – Promotes a Calm Response to Daytime Stress – Non-GMO, Gluten-Free, Vegetarian – 30 Tablets at NutriSentra

Product OverviewLife Extension Theanine XR™ is a dietary supplement designed to help you achieve a calm and focused state of mind during stressful daytime situations. Each tablet contains 200 mg of L-theanine, an amin...

Category Food Supplement
Delivery area United Kingdom
Checkout Secure checkout
Anxiety SupportCalm FocusDaytime StressGluten-FreeL-TheanineLife ExtensionNon-GMOStress ReliefSustained ReleaseVegetarian

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 NutriSentra shows before checkout

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

Questions about Life Extension Theanine XR™ Stress Relief – L-Theanine – Promotes a Calm Response to Daytime Stress – Non-GMO, Gluten-Free, Vegetarian – 30 Tablets

Is Life Extension Theanine XR™ Stress Relief – L-Theanine – Promotes a Calm Response to Daytime Stress – Non-GMO, Gluten-Free, Vegetarian – 30 Tablets available for UK customers?

Yes. This product is currently available on NutriSentra with UK 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

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