Vegetarian L-Theanine Powder L Theanine Powder...






  • HIGHLY NEUROPROTECTIVE. By dilating blood vessels in the brain, L-Theanine inadvertently allows blood to flow to the brain far more easily. This can improve cognition and protect the brain from age related issues associated with cognitive decline.

  • NATURALLY FOUND IN TEA. L-Theanine is naturally and rather commonly found in green tea; it also has the outstanding ability to counteract the negative effects of caffeine such as ‘the jitters’.

  • INDUCES CALMING EFFECTS. L-Theanine induces calming effects through the production of alpha waves in the brain; it does this while improving attention and without causing drowsiness.

  • IMPROVES FOCUS & COGNITION. L-Theanine can promote focus and mental clarity while reducing stress levels, vastly improving one’s productivity levels throughout the day.

  • HERB-OLOGY GUARANTEE. Herb-ology is a trusted route from soil to supplement. We source high quality herbal ingredients and extractions, provided in low-impact packaging. If you’re not satisfied, we offer a 100% money back guarantee on all our supplements. Just let us know and we’ll take it from there.

What is L-Theanine?

L-Theanine is a rather uncommon amino acid; its most prevalent appearance comes from it being one of the main ingredients found in green tea, alongside caffeine. It has recently become extremely popular in supplement form, due to its ability to induce relaxing and attention promoting effects. It manages these superb effects without causing sedation, making it a very popular supplement to improve cognition.

L-Theanine is also renowned for its capability to reduce the negative side effects that are associated with caffeine, such as ‘the jitters’. Hence why when drinking green tea (contains high l-theanine content), people tend to feel a much calmer sensation as opposed to drinking a cup of coffee.

It is also widely known for its neuroprotective benefits, induced by increasing blood flow to the brain. This aids in the improvement of both focus and mental clarity.

This product contains L-Theanine powder (5-N-Ethyl-Glutamine). 

What Are The Benefits Of L-Theanine?

  • Counteracts ‘jitter’ effects induced by caffeine.
  • Improves blood flow to the brain.
  • Improves cognition.
  • Promotes feelings of calm and relaxation.
  • Enhances focus and concentration.

 Recommended Dosage

We recommend taking between 100mg and 500mg L-Theanine each day. This can be split into 2 doses. We would always recommend beginning at the lower end of the dosage when first starting supplementation.


100% PHARMA L-Theanine Powder

Items ordered before 12 noon will be shipped on the same day, anything ordered after will be shipped the following day apart from Friday when the item(s) will be shipped the following Monday.

We ship all items via Royal Mail 48 as this is a tracked service and we can provide proof of delivery with this service which makes it very safe.

Royal Mail 48 Usually takes around 2-3 working days to arrive.

For a speedier service we offer Royal Mail 24 which is a 1-2 working day service and is also a tracked service.
We offer a thirty day returns guarantee which means we will accept any unopened or tampered item for a full refund.

If you have purchased an item by mistake we kindly ask you to pay the return postage and we will refund you once we receive the item back in good condition.

If we make a mistake and you wish to return an item then we will happily pay for return postage, or offer you a replacement item.
We accept payment via Debit & Credit Card and PayPal. All transactions are 100% secure.

Why Buy From Us?


100g, 200g, 25g (Sample), 300g, 50g


New: A brand-new- unused- unopened and undamaged item. See the seller's listing for full details. See all condition definitions– opens in a new window or tab



Life Stage




Type of Diet



L Theanine Powder




Rest- relaxation- focus and calm

Expiry Date






Country/Region of Manufacture

United Kingdom


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