Zein Pharma L-Theanin Natural

Green Tea Leaf Extract, Thereof L-Theanin, Thereof polyphenols

United Kingdom & Rest of the World Shipping Details:
Same day dispatch for orders placed by 2pm (Orders after 2pm dispatched next working day).

Free shipping on orders over £50 to the UK.

Returns: Our products are meant to make you feel healthy and at your best. If you need to return your item, you can do so free of charge within 14 days in the same original and unopened packaging. Subject to T&C's.

Welzo is a UK-based health platform. Orders ship from the UK.

Take one capsule of Zein Pharma L-Theanin Natural, 250mg daily, preferably with food to enhance absorption. Store in a cool, dry place, away from direct sunlight and moisture. Keep out of reach of children. Do not exceed the recommended daily dose. If you are pregnant, breastfeeding, taking any prescribed medication, or have any medical condition, consult a healthcare professional before use.

Please consult the product packaging for accurate instructions on how to use the product.

*Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

The Active Ingredient Is: L-Theanine

L-Theanine is an amino acid present in green tea that encourages a relaxed, focused mood without sedation. This variant comes from green tea leaf extract and is standardised to supply L-Theanine with very low caffeine levels.

What Does L-Theanine Do?

L-Theanine helps promote calm and sharp focus by modulating neurotransmitter activity, inviting a relaxed yet attentive state. It may also support mood and focus, matching research on typical brain function.

Dr. Hidese from Osaka University found that L-Theanine noticeably reduced stress responses during cognitive tasks.

This product is not meant to diagnose, treat, cure or prevent any disease.

Zein Pharma is picked for its solid German manufacturing heritage and pharma-grade approach to quality. This brand is recognised for producing under strict pharmaceutical standards in Germany and for regular testing by German and independent laboratories, showing a commitment to safety and consistency. The Welzo team values ZeinPharma's emphasis on vegan, gluten-free and GMO-free formulations that are developed without animal testing or artificial additives, matching our safety and purity priorities. our medical team has reviewed ZeinPharma’s quality philosophy and confirms its suitability for a tough UK market environment.

The product leverages a carefully sourced green tea extract from Sichuan and is standardised to deliver at least 40% L-theanine and 30% polyphenols, with minimal caffeine content. This brand’s transparency around gentle extraction and routine German lab quality control supports reliable, repeatable results for this relax-and-focus profile. For how we verify ingredient quality, we rely on our established process: how we verify ingredient quality.

We selected ZeinPharma because their pharmaceutical ethos, rigorous testing, and clear, science-backed sourcing align with Welzo’s evaluation criteria and support strong product fit for the British market.