# NUTRINATION L Theanine 400mg Capsules, 99.6% Pure, 150 Vegan Capsules

NUTRINATION L Theanine capsules contain 400mg per capsule for a simple supplement routine supporting relaxation and focus.

- [Original product page](https://www.ofertitastop.com/uk/product/nutrination-theanine-400mg-capsules-99-pure)
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- Market: UK
- Language: en-GB
- Currency: GBP
- Product updated: 2026-11-04T07:31:27.362Z
- Brand: NUTRINATION
- MPN: L Theanine 400mg
- EAN / GTIN: 5070002850045
- SKU: ofertitastop-uk-146933
- Category: Health & Beauty > Healthcare > Fitness & Nutrition > Vitamins & Supplements
- Source store: amazon UK
- Active deal: Yes
- Price: 9.99 GBP
- Previous price: 12.99 GBP
- Discount: 23%
- Rating: 4.6 / 5
- Reviews: 258

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## Description

Some routines call for a supplement centred on relaxation, others prioritise support for focus during the day. NUTRINATION L Theanine provides a capsule format for people looking to add this single-ingredient supplement to their routine.

Sourced from green tea leaves, the L-theanine is supplied at 400mg per capsule. The bottle contains 150 capsules and is presented as a five-month supply.

Its 99.6% purity, vegan formulation and third-party testing offer useful details for shoppers comparing L-theanine supplements.

## Tips for day-to-day use

The capsule format makes it straightforward to include L-theanine in an existing supplement routine, without preparing a drink. The product is described as supporting relaxation and focus, making it relevant to people seeking both a calmer feel and help maintaining concentration as part of everyday life. These are support claims, not a promise of a particular result.

Each capsule contains 400mg of L-theanine. Follow the product packaging for directions on use, and consider how the capsule format fits alongside your usual routine. The stated 150-capsule, five-month supply gives a clear indication of the pack size for planning regular use.

If you are choosing between a green-tea drink and a dedicated L-theanine supplement, this product offers the latter in a capsule sourced from green tea leaves. It is also a focused choice for shoppers looking for L-theanine rather than a formula built around several active ingredients.

## What stands out

The formula is described as 99.6% pure L-theanine, with no unnecessary additives. For customers who pay close attention to ingredient sourcing and formulation, the green-tea origin and purity figure make the product’s central ingredient easy to identify. It is vegan, non-GMO and gluten-free, which may suit a range of dietary preferences.

Quality checks are another point of distinction. Each batch is described as third-party lab tested by Eurofins, an ISO/IEC 17025:2017-accredited laboratory. The product is made in line with Good Manufacturing Practice (GMP) guidelines. The listed HACCP, Halal and Kosher certifications provide further relevant information for shoppers assessing manufacturing and dietary requirements.

Together, these details give the capsule a clear focus: a defined amount of L-theanine, a stated purity level and checks described for each batch. That can make it easier to compare with products that provide less detail about their ingredient or testing approach.

## Quick overview

- Type: L-theanine supplement capsules
- Source: Green tea leaves
- Amount: 400mg per capsule
- Purity: 99.6%
- Pack size: 150 capsules, described as a five-month supply
- Dietary details: Vegan, non-GMO and gluten-free
- Testing: Third-party testing by Eurofins, an ISO/IEC 17025:2017-accredited laboratory
- Manufacturing: Produced in line with GMP guidelines

## Should you buy it?

NUTRINATION L Theanine is worth considering if you want a dedicated capsule supplement with a clearly stated 400mg amount and a 99.6% purity figure. Its green-tea-derived ingredient, vegan and gluten-free details, and batch testing information help distinguish it for shoppers who value a straightforward formula and visible quality checks.

The product is aimed at everyday use for people seeking support for relaxation and focus, with 150 capsules in the bottle. Choose it when a single-ingredient L-theanine capsule suits your routine better than a drink or a multi-ingredient blend.

## Images

![NUTRINATION L Theanine 400mg Capsules, 99.6% Pure, 150 Vegan Capsules — 1](https://www.ofertitastop.com/i/kROuMPAuWDEPB3NgasAjBxtzwd8XR21BWW1YHeiDXO-VEaN45-nRDfns-PwMVXFvQyZSeC-tAGyuF61HS6tf2SiPMZ_OqyoyFb-WSxQKHHMT7UmWnrGg.jpg)

![NUTRINATION L Theanine 400mg Capsules, 99.6% Pure, 150 Vegan Capsules — 2](https://www.ofertitastop.com/i/4B-yc4A6PoOtvz0VbZxCdcqWsMLCRCfC11QBrMU81bLhMnprF_0Oup_dckZYFp8otirCd6KtI8Xjde0yUsQ1GzM13ANuU6cYOmA7ErMUbCUhCKzjsXo3.jpg)

![NUTRINATION L Theanine 400mg Capsules, 99.6% Pure, 150 Vegan Capsules — 3](https://www.ofertitastop.com/i/p49S60d8dzmUpYoz32dDljaEsYPMpQyld0YQX78Be2Ben375ERavek0gohvtPqk2Xa1wmTN0u6PGh2e6lqctZQ9bWPO5tFy3-EIAPCahVOgNixBEmw6F.jpg)

![NUTRINATION L Theanine 400mg Capsules, 99.6% Pure, 150 Vegan Capsules — 4](https://www.ofertitastop.com/i/RMm2bgRSBgYn4vpMzR0TQ2-au7k8U8qWf_hyWeqwRuHbzZO0Toec6Ii6eCkxGvtXkzQgFDdqlrp-1UnMVZ08afPiaDLJB5sU-Bj85tTvrF8Z1Xuq2euP.jpg)

![NUTRINATION L Theanine 400mg Capsules, 99.6% Pure, 150 Vegan Capsules — 5](https://www.ofertitastop.com/i/5NCO2nsStOEmtxOPC-1yeWVVDmWHEpNkmOTuJ9dz5Z0taitTqg7TRVxz0zCu4qxu1RKSBK1ThZIdMcUQKT3Qo8zP2Kjb5kzJJdpqBZxK3FpYlqVg7vhn.jpg)