Vinco L-Theanine Supplement – 400mg x 120 High Strength L Theanine Capsules – 99%+ Purity – Supports Sleep & Relaxation – Non-GMO & Gluten Free – Made in The UK

Price: £11.98 - £9.99
(as of May 23, 2026 21:29:17 UTC – Details)

From the brand

Proudly made in the UK, our quality, scientifically-backed supplements are made to support your wellness journey. We use clean, vegan, gluten-free, and GMO-free ingredients to create ethical, effective products you can trust. Our commitment to quality, transparency, and inclusivity ensures that everyone can achieve their best self with Vinco.

What makes our products unique?

The important element of supplementation is ingredients. This is why we use locally sourced premium ingredients that work for you, Our products are made with you (and our planet) in mind.

Why we love what we do?

We take pride in providing premium supplements, so you can focus on what really matters: your health and well-being.

How do I know which supplement is right for me?

We provide detailed information on each product page, including benefits, ingredients, and usage instructions. If you need more guidance, feel free to contact our team.

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Product Dimensions ‏ : ‎ 4.5 x 4.5 x 9.6 cm; 90 g
Manufacturer ‏ : ‎ Vinco Supplements
ASIN ‏ : ‎ B0CK581PC7
Item model number ‏ : ‎ 59821700
Customer reviews: 4.4 4.4 out of 5 stars (107) var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
𝐂𝐥𝐚𝐫𝐢𝐭𝐲 𝐚𝐧𝐝 𝐅𝐨𝐜𝐮𝐬: Experience the power of L-Theanine in its purest form. Our carefully formulated L-Theanine 400mg capsules support mental clarity, helping you stay alert without overstimulation. Sourced from green tea extract, this supplement is a natural way to maintain focus during demanding tasks.
𝐐𝐮𝐚𝐥𝐢𝐭𝐲 𝐅𝐨𝐫𝐦𝐮𝐥𝐚: Our L-Theanine capsules are made in Britain’s GMP-certified facilities, ensuring standards of quality. Free from GMOs, artificial fillers, and preservatives, this green tea supplement is also vegan-friendly and gluten-free. Choose a formula that prioritises purity and effectiveness.
𝐒𝐮𝐩𝐞𝐫𝐢𝐨𝐫 𝐀𝐛𝐬𝐨𝐫𝐩𝐭𝐢𝐨𝐧: Each serving of our L-Theanine 400mg capsules is optimised for enhanced bioavailability, meaning your body absorbs the key nutrients more efficiently. Unlike standard fatigue supplements, our formula delivers the goodness of green tea capsules in an easy-to-take form.
𝐒𝐭𝐫𝐞𝐬𝐬 𝐌𝐚𝐧𝐚𝐠𝐞𝐦𝐞𝐧𝐭: Busy schedules and demanding days call for reliable stress relief solutions. Our expertly made L-Theanine supplement helps you stay composed, making it a great addition to your daily wellness routine. Unlike typical sleeping tablets, it promotes calmness without drowsiness.
𝐂𝐮𝐬𝐭𝐨𝐦𝐞𝐫 𝐒𝐚𝐭𝐢𝐬𝐟𝐚𝐜𝐭𝐢𝐨𝐧: At Vinco Supplements, we prioritise quality and customer experience. Our L-Theanine capsules are produced with care, meeting strict UK safety regulations. Whether you’re exploring GABA supplements UK or seeking stress relief, our formula is designed with your well-being in mind.

Product summary

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