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Product Description
L-Theanine is a natural non-protein amino acid primarily found in tea leaves (Camellia sinensis). It is available in two main commercial forms: standardized green tea extract (20% L-theanine) and high-purity L-theanine (98%–99%, biosynthesized/enzyme-processed). It delivers a unique calming alertness effect, helping ease stress without causing drowsiness.
Attributes
| English Name | L-theanine | Density | 1.171±0.06 g/cm3(Predicted) |
| CAS NO | 3081-61-6 | Index of Refraction | 8 ° (C=5, H2O) |
| Molecular Formula | C7H14N2O3 | Storage Condition | Cool and dry please |
| Mol. wt. | 174.2 | Solubility | Soluble in Water (up to 20 mg/ml). |
| EINECS No. | 221-379-0 | Form | Powder |
| MDL No. | MFCD00059653 | Colour | Brown |
| Melting Points | 207°C | PH Value | / |
| Stability | / | ||
Nutritional Composition
L-Theanine is a unique amino acid naturally found in tea leaves and some mushrooms. It is a popular nutritional ingredient widely applied in functional foods, dietary supplements and beverage products. Unlike caffeine, L-theanine can help support calm relaxation without causing drowsiness. It contributes to maintaining normal mental state, easing nervous tension and improving focus.
This ingredient is water-soluble and easy to formulate into tablets, soft candies, drinks and powder formulations. As a safe natural nutrient, it works synergistically with caffeine to balance energy and reduce overexcitement. Many research studies show that L-theanine helps support healthy brain function. It has gained great popularity in global health product markets for its gentle stress-relief benefits.
Promotes Calm Relaxation
L-theanine is a natural amino acid that helps soothe nervous tension without inducing sleepiness. It supports the brain to produce alpha waves associated with a relaxed yet alert state. This ingredient eases daily stress response, relieves anxious feelings caused by busy work and pressure. It is widely used in nutritional supplements for people under long-term mental strain.
Supports Healthy Cognitive Function
L-theanine helps maintain normal focus and mental clarity. It works to balance brain neurotransmitters, reducing mental fatigue from long hours of concentration. When combined with caffeine, it can soften jittery side effects while sustaining steady attention. It benefits students and office workers for better daily cognitive performance.
Improves Sleep Quality
L-theanine aids in regulating the nervous system to ease restless mood before bedtime. It does not act as a sedative, but helps users fall asleep more smoothly and enjoy deeper rest. It reduces frequent midnight waking caused by overactive thoughts. Users usually wake up feeling refreshed instead of groggy the next morning.
Boosts Immune Defense
L-theanine helps modulate immune cell activity in the human body. It supports the body’s natural defensive response against external challenges. Long-term proper intake helps maintain balanced immune function, especially for people under chronic stress which may weaken immunity. It serves as a popular functional nutrient for daily immune care.
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Dietary Supplements
L-theanine is a key functional raw material for various dietary supplement products. It can be made into capsules, tablets and powder sachets for daily stress management and mental wellness. Many health brands add L-theanine to their formulas to support relaxation and concentration. It is widely accepted by global consumers seeking natural nutrients for mental balance.
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Functional Beverages
As a water-soluble amino acid, L-theanine is ideal for functional drinks, ready-to-drink teas and bottled beverages. It balances the stimulating effect of caffeine, reducing jitters while keeping alertness. Beverage manufacturers use it to develop calming drinks for office workers and students facing mental pressure.
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Confectionery & Soft Candy
L-theanine can be incorporated into functional soft candies, chewing gums and lozenges. These tasty formats lower the threshold of daily nutrient intake and attract consumers who dislike pills. It is popular in wellness snack lines, delivering gentle relaxing benefits in convenient, portable edible treats for all age groups.
Research and Innovation
Our commitment to excellence extends beyond production. We invest in ongoing research and development to stay at the forefront of L-theanine science. This ensures that our products are based on the latest findings and are continuously improved for maximum effectiveness.
Sustainability and Ethics
At Shaanxi Bieyouth Biotech Co.,Ltd. we are committed to sustainable and ethical practices. We source our raw materials responsibly and ensure that our production processes have a minimal environmental impact. Our dedication to ethical standards is reflected in every aspect of our business, from our supply chain to our customer relationships.
Customer Trust
We understand that trust is earned. That's why we prioritize transparency and communication with our customers. We provide detailed information about our products, their benefits, and the science behind them. Our goal is to empower our customers to make informed decisions about their health and well-being.
Global Reach
L-theanine's benefits are universal, and so is our reach. We distribute our products worldwide, making this elite antioxidant accessible to health-conscious individuals across the globe. Our international presence allows us to serve a diverse range of customers and contribute to global health.
The Future of Health
As we continue to explore the potential of L-theanine, we are excited about the future of health and wellness. We believe that by offering high-quality L-theanine supplements, we are contributing to a healthier, more vibrant world. Join us in this journey towards optimal health and discover the difference L-theanine can make in your life.

About Us
Shaanxi Bieyouth Biotech Co., Ltd. is proud to offer L-theanine, a cutting-edge supplement for those seeking to enhance their cellular health and protect against the ravages of time. By incorporating our L-theanine into your health regimen, you are taking a proactive step towards safeguarding your body's cells and promoting a longer, healthier life. Experience the power of this elite antioxidant and embrace the benefits of L-theanine for your well-being.






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