Caffeine 100mg +
L-Theanine 100mg

100% Natural

Uniquely natural complex: caffeine from green coffee beans, embedded in a premium green tea leaf extract (Camellia sinensis) with L-theanine. Gently extracted using only water and edible ethanol, no toxic residues or additives.
  • Caffeine as green coffee extract
  • 100% natural extract of unroasted green coffee beans (Coffea arabica)
  • Highly concentrated extract with 90% pure caffeine
  • In combination with green tea extract from pesticide-free cultivation with at least 99% L-theanine content
  • Balanced complex with 100mg L-theanine and 100mg caffeine per capsule 
  • Gently extracted using water and edible ethanol, no toxic residues or additives


90 capsules

Delivery : 1–3 business days

Incl. VAT, excl. Shipping

€741.23 / 1kg
In stock

Premium Bioactive Ingredients

  • Natural plant extracts: green coffee and green tea leaf extracts 
  • Balanced complex with 100mg caffeine and 100mg L-theanine per capsule 
  • World's first caffeine from 100% natural, plant-based source
  • Purely natural premium extract from pesticide-free green tea leaves (Camellia sinensis)
  • Gently extracted using water and edible ethanol, no toxic residues or additives.
  • Strictly monitored cleaning procedure following each extraction to ensure absence of extraction residues 

How are we different?

We are the world's first provider worldwide to offer caffeine products from 100% natural, plant-based sources, with competitors typically using synthetically produced caffeine. Our natural caffeine is obtained as a highly pure water extract (50:1) from the unroasted green coffee beans (Coffea arabica) and contains a full 90% of caffeine, as well as many other valuable plant substances.

Our L-theanine is naturally derived from the green tea plant and not from generic synthetic sources. As a natural extract, this product not only has a high L-theanine content, but also includes other valuable substances from the plant including catechins and flavonoids.

Our green tea extract with hight L-theanine content comes from specialised production. We ensure not only that our green tea plants are sourced from pesticide-free cultivation, but also that the machines used for extraction are fully cleansed after every batch so that there is no possibility of extraction residues from previous batches contaminating our product.We prevent contact with any pesticides and pollutants through a special cleaning process after each individual extraction. 

For the capsule shells we use custom-made HPMC capsules that, unlike most other HPMC and pullulan capsules on the market, are 100% free from controversial additives such as carrageenans and PEG. We then package this product in environmentally friendly amber glass.


  • Premium active ingredients in their purest form
  • Sourced directly from the world’s best producers
  • Our select raw materials are the basis of all our formulations
  • Complete avoidance of all unnecessary additives and adjuvants
  • Exclusive use of valuable natural ingredients for additives
  • We voluntarily declare all ingredients
  • All extractions performed without the use of chemical solvents
  • Custom production when necessary, in order to achieve the highest possible level of purity
  • Independent laboratory testing available on product pages
  • Raw materials sourced only from premium suppliers who are committed to fair working conditions
  • Amber glass and compostable pouches used for packaging
  • Vegan capsule shells, free from PEG and carrageenans
  • Packaged in the EU according to HACCP, GMP and ISO 22000:2018 standards
  • Stored in non-toxic containers
  • Shipped in mineral oil-free boxes
  • All products guaranteed 100% free from magnesium stearate, silicon dioxide, nanoparticles (no legal opportunism), genetic engineering, artificial colours and flavours, titanium dioxide and added sugar & sweeteners


Caffeine is an alkaloid from the xanthine group. It can be found in over 60 plants, including the coffee plant, the tea bush, guarana, mate, and cola nut. Thanks to its stimulating effect on the brain and its ability to enhance motivation and concentration, caffeine is the most popular stimulant in the world.

L-theanine is an amino acid similar to glutamine that occurs naturally almost exclusively in the green tea plant (Camellia sinensis). L-theanine has antioxidative properties and can protect healthy cells against oxidative stress. L-theanine can also help to regulate various neurotransmitter systems and can have a relaxing effect.

Combining caffeine with L-theanine can enhance caffeine's concentration-boosting and stimulating effects, while minimising negative side effects such as uneasiness and nervousness.


Recommended Dosage

Take 2 capsules (200mg caffeine + 200mg L-theanine) with 200ml water daily.

Food Supplement

Do not exceed the recommended dose. Food supplements cannot replace a balanced and varied diet. Keep out of reach of children. Increased caffeine content. Not recommended for children, pregnant or breastfeeding women.


Store in a cool, dry place away from direct sunlight and heat..


Ingredients: Green Coffee Extract, Green Tea Extract.
Capsule shells: Hydroxypropyl Methylcellulose.

Contains: 90 capsules

Ingredients per Daily Dose (2 Capsules) % NRV*
Green Coffee Extract 222.2mg -**
of which caffeine 200mg -**
Green Tea Extract 202mg -**
of which L-theanine 200mg -**

*Nutrient Reference Value
**no reference available

Per capsule: 111.1mg green coffee extract (of which 100mg caffeine), 128.2mg L-theanine (of which 100mg L-theanine, 25.6mg D-theanine)
In total:
90 capsules / jar

Product Details

German Pharmaceutical Number (PZN) 16323047
Origin  High-quality raw ingredients from a certified producer in India.
Production In-house production in Europe, bottling and encapsulation in the EU according to HACCP, GMP / ISO 22000:2018 standards
Finished products packaged in amber glass jars, and stored in non-toxic containers
Shipping in mineral oil-free boxes
Capsules Plant-based cellulose (HPMC). Vegan
Premium HPMC quality: Free from additives as carrageenans and PEG
Packaging Amber glass jar to protect against light and oxidation (free from plasticisers and BPA).
To Reuse Remove product label by soaking the jar in warm water for 5 minutes. Glue residue can be removed with dish soap.

Sunday Natural

Our Philosophy

For thousands of years, cultures all over the world have been using medicinal plants and nutritious foods to naturally foster and maintain vitality and good health.

With our products, we try to emulate this ancient wisdom as much as possible.

Consequently, our philosophy is simple: everything we do meets the highest standards of quality and purity; our focus is on organic and natural ingredients.

We follow this philosophy with meticulous care on all levels and down to every last detail.

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