L-Theanine
L-Theanine
Available in stock (200)
Shipping: calculated at checkout.
Couldn't load pickup availability
Product Information
Product Information
What is L-Theanine
L-Theanine is an amino acid primarily found in the leaves of the tea plant (Camellia sinensis). It has been the subject of numerous scientific studies for many years due to its potential health benefits. After consumption, L-Theanine is quickly absorbed from the gastrointestinal tract into the bloodstream and reaches the brain within 30 to 45 minutes, as it easily crosses the blood-brain barrier.
Health benefits of Camellia Sinensis:
- Weight loss: may help with weight loss, may help maintain a normal body weight. *
- Blood circulation: helps blood circulation in the veins of the legs. *
- Cholesterol: may help maintain normal cholesterol levels. *
Popular combinations with L-Theanine: L-Theanine with Acetyl L-Carnitine
L-Theanine, the calming compound from green tea, blends seamlessly with Acetyl L-Carnitine, which helps convert fatty acids into energy. The result is a smooth balance of relaxation and alertness, with added support for mental energy. This combination avoids the jitters often linked to caffeine. Instead, it creates steady focus and sustainable energy throughout the day. *
Why buy L-Theanine from Cerebra?
Our capsules are of the highest quality and sourced from reliable suppliers. We ensure that our products meet strict quality standards so you can confidently purchase and experience their benefits.
Ingredients
Ingredients
How to use
How to use
We work with a Dutch certified lab that follows strict standards and tests every ingredient before it is used. Only the essential additives are included, ensuring our products are safe and effective for daily use.

Clean supplements, clean thinking
At Cerebra, we believe everything begins in the brain, the center where nearly all bodily functions are processed and controlled. Our mission grew out of a personal struggle with ADHD and the search for focus, where conventional prescriptions came with side effects that outweighed the benefits. In a world full of complex supplement blends and unnecessary additives, we chose a different path: clean, single-ingredient products. This way, you can build your own formula or simply benefit from the purity of one trusted ingredient, supporting your brain in the most natural and transparent way.
You have questions, we've got the answers
What makes Cerebra supplements different from others?
What makes Cerebra supplements different from others?
Cerebra stands for purity, transparency, and choice. We offer only single-ingredient supplements, with no unnecessary additives, so you can build your own stack or enjoy the benefits of each ingredient on its own.
How do you test the quality of your supplements?
How do you test the quality of your supplements?
We work closely with a certified lab in the Netherlands that follows strict regulations. Every ingredient is carefully tested for purity, safety, and quality before it goes into our products, ensuring you get exactly what you expect.
Where are your supplements produced?
Where are your supplements produced?
All our supplements are proudly produced in the Netherlands, following the highest European quality standards. By working with certified Dutch partners, we guarantee purity, safety, and consistency in every batch
How should I take the capsules, and at what time of day?
How should I take the capsules, and at what time of day?
All Cerebra products are safe for daily use and are designed to support specific areas of health, mainly focused on the brain. We recommend taking the capsules with water, preferably alongside a meal. The best time of day depends on your goal. For example, take focus-supporting products before studying or working. The most important part is consistency, so choose a routine that works for you and stick to it.
What is your shipping and returns policy?
What is your shipping and returns policy?
All orders placed before 23:00 are shipped the same day. Depending on your country, we select the fastest and most reliable courier option. Returns are possible within 14 days if the pouch has not been opened. Simply email us at info@cerebra-nootropics.com, and we’ll guide you through the process.

