Doctor's Best

L-Theanine with Suntheanine, 150mg

  • 4 for 3 - Mix and Match
£27.99
£27.99 £27.99
  • 4 for 3 - Mix and Match
£27.99
£27.99 £27.99
Doctor's Best L-Theanine with Suntheanine delivers 150mg of this unique amino acid per capsule.

Main Ingredients:

L-Theanine
  • Patented Ingredient
  • Fermentation Process
  • Science-Based Brand
  • Green Tea Amino Acid*
  • Suntheanine Form*
Size

Unit price: £0.31 / Capsules

Dispatched Monday*
*excluding public holidays

Free delivery over £30
Low stock
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Doctor's Best L-Theanine with Suntheanine delivers 150mg of this unique amino acid per capsule.

Main Ingredients:

L-Theanine
  • Patented Ingredient
  • Fermentation Process
  • Science-Based Brand
  • Green Tea Amino Acid*
  • Suntheanine Form*

Ingredients and Nutritional Information

  • Main Ingredients:

    L-Theanine
  • Other Ingredients: L-Theanine, Microcrystalline cellulose, hypromellose (vegetarian capsule), silicon dioxide.
  • Free From: Gluten, Soy

Direction of Use

Take 1 capsule daily without food or as recommended by a healthcare professional

Warning/Disclaimer 

Food supplements should not be used as a substitute for a varied diet. Do not exceed the stated dosage. Store in a cool dry place protected from light and heat. Keep out of sight and reach of children. Please consult a health professional before taking this product, especially if you are pregnant or breastfeeding or are taking medication.

Product Description

Doctor's Best L-Theanine features Suntheanine, a patented form of the amino acid L-Theanine which is identical to the amino acid found in green tea. We selected this product because it is produced via a patented fermentation process, ensuring a high level of purity.

Doctor's Best is committed to transparency and quality, giving you confidence in what you consume. This supplement is an excellent addition to your routine if you are looking to support a sense of calm. It is vegan, gluten-free, and soy-free.


Product Code: DRB-0060

At Vytalise, we believe wellbeing should be simple.

We choose premium ingredients, trusted brands and formulas proven to support real lives.

We're family owned since 2009 and proudly independent.

At Vytalise, we believe wellbeing should be simple.

We choose premium ingredients, trusted brands and formulas proven to support real lives.

We're family owned since 2009 and proudly independent.

At Vytalise, we believe wellbeing should be simple.

We choose premium ingredients, trusted brands and formulas proven to support real lives.

We're family owned since 2009 and proudly independent.

  • Strength

    150 mg

  • # of Days supply

    90

  • Product rating (1-5)

    5

  • Days dosage

    1 Capsule

  • Cost per day

    £0.31

Patented Ingredient

Features Suntheanine, a clinically studied form of L-Theanine.

Fermentation Process

Produced using a patented fermentation method for quality.

Science-Based Brand

Backed by Doctor's Best's commitment to effective formulations.

Green Tea Amino Acid*

*Contains L-Theanine, an amino acid naturally found in green tea.

Suntheanine Form*

*Uses patented Suntheanine for high purity and consistency.

  • Gluten Free

  • Vegan

  • Vegetarian

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  • Doctor's Best

    Doctor’s Best was founded by a physician and has long focused on clarity, research-informed formulation, and transparent sourcing.

  • The Vytalise Promise

    Trusted essentials for your wellbeing - delivered with care.

    • Expertly sourced. Only premium, vetted brands.
    • Family-owned since 2009. Trusted for over 15 years.
    • 500,000+ happy customers. Thousands of 5 star reviews.