Momentous L-Theanine helps you unwind and stay focused without drowsiness, because of a precise dose per capsule and Momentous' commitment to quality and transparency. The star ingredient, L-Theanine, crosses the brain barrier to boost soothing neurotransmitters and promote relaxed focus. Momentous is known for its open manufacturing standards, including Good Manufacturing Practice processes and independent testing [transparent quality checks]. The result is a daily supplement you can rely on for calm, focus and better sleep without compromise.

Available Sizes & Variants:

Sixty servings - regular bottle holding one capsule per serving.

Benefits & Features:

• Calms the mind for relaxed focus during the day.
• Supports sleep quality without causing drowsiness, helping you wake refreshed.
• The star ingredient crosses the blood brain barrier and increases calming neurotransmitters, promoting relaxed focus and a steady mood without sedating you, even during busy days.
• Manufactured with transparency and tested for purity under strict quality controls.
• Ideal for athletes and busy professionals who want steady calm and mental clarity.

Momentous is known for transparency and clinical focus. L-Theanine helps calm the mind and promote relaxed alertness without sedation, making it suitable for daytime focus or evening wind downs. The team uses Good Manufacturing Practice standards and independent purity checks, with the NSF Certified for Sport badge signalling trusted third party testing. Athletes and wellness enthusiasts rely on Momentous for consistently high quality supplements like l theanine supplements that fit demanding schedules. We also offer a vitamin d supplement option and probiotics as part of a holistic approach to daily wellness.

L-Theanine, Microcrystalline Cellulose, Hydroxypropyl Methylcellulose (vegetable capsule).

• GTIN: 850030796035
• Manufacturer: Momentous
• Categories: L-Theanine Supplements & TabletsMomentous SupplementsNootropics SupplementsSleep & Relaxation SupplementsStress Relief & Calming SupplementsSupplements for Anxiety
• Best buy: 6 - 24 months+

United Kingdom Shipping:

Orders placed by 2pm (Monday to Friday) are dispatched the same day. Orders placed after 2pm will be dispatched the 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 30 days in the same original and unopened packaging. Subject to T&C's.

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

The Active Ingredient Is: L-Theanine

L-Theanine is an amino acid naturally found in green tea that supports relaxation and focused calm.

This form crosses the blood-brain barrier and is sourced from green tea, providing a non-sedative calming effect that supports mental balance.

What Does L-Theanine Do?

L-Theanine participates in promoting relaxation and calm mood, aiding in mental calmness and focused alertness in line with EFSA-style descriptions.

Dr. Kimura of Kyoto University found that L-Theanine reduces stress and supports sleep quality, reflecting clinically observed benefits for adults.

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

Momentous aligns with Welzo's high standards for a trusted supplement partner, combining manufacturer expertise with a clear commitment to quality. This brand is widely recognised for its transparency, clinical focus and strong standing within the sleep and wellness space, including use by professional athletes and health‑minded consumers. Momentous L-Theanine is supported by rigorous third‑party testing and a manufacturing process that adheres to GMP, with independent verification for purity and label accuracy. This combination demonstrates a disciplined approach to safety and potency that our medical team values. our medical team has endorsed Momentous based on its consistent quality and clear supporting documentation, while our quality criteria emphasise robust testing and certification. our quality assurance criteria are designed to ensure every batch meets high standards of purity and reliability.