

Momentous
L-Theanine
Sourced from green tea, this amino acid gently elevates alpha brain waves—the state associated with relaxed focus and mental clarity—without sedating you. Momentous offers a clean, effective dose to help you stay composed under pressure, wind down after intense stimulation, or transition into restorative sleep.
Whether you’re managing cortisol spikes, evening anxiety, or just looking to take the edge off your day, L-Theanine helps reset your nervous system without the crash or fuzziness.
Why We Like It
Risks and Considerations
Product information
Frequently Asked Questions
What payment methods can I use?
We offer 35 different payment methods including major providers like Mastercard, Visa, PayPal, American Express and Diners as well as many different local payment methods including Klarna, iDEAL, AliPay, Sofort, giropay, and many more.
Can I purchase items with another currency?
Yes, you may select a currency based on your personal preference. When you select your country in the country selector on the upper right of the website or are taken directly to your country’s version of the website, you will see prices listed in the regional currency.
Can I make changes to my order after it’s been placed?
We do everything we can to fulfill orders quickly and unfortunately cannot make updates after an order has been placed. These changes include removing or adding products and/or changing the delivery address. If a mistake has been made with your order information, it’s quickest to create a new order with the correct information and then let our Customer Service.
Sourced from green tea, this amino acid gently elevates alpha brain waves—the state associated with relaxed focus and mental clarity—without sedating you. Momentous offers a clean, effective dose to help you stay composed under pressure, wind down after intense stimulation, or transition into restorative sleep.
Whether you’re managing cortisol spikes, evening anxiety, or just looking to take the edge off your day, L-Theanine helps reset your nervous system without the crash or fuzziness.