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L-Theanine is a naturally occurring non-protein amino acid primarily found in the leaves of Camellia sinensis (tea plant). It is the main source of the umami taste in tea, accounting for approximately 50% of the total free amino acids in tea leaves. Manufactured using advanced biosynthesis technology, Natural Field's L-Theanine delivers a purity of over 98%, appearing as a white crystalline powder with good water solubility and a mild, sweet taste. Widely recognized as a premium functional ingredient in the global market, L-Theanine is extensively used in dietary supplements, functional beverages, snack foods, and personal care products. Renowned for its unique ability to promote relaxation without drowsiness, it has become a core component in mood management and cognitive support formulations.
High Purity: Manufactured using advanced biosynthesis technology with HPLC-verified purity of ≥98%, low impurity levels, and consistent quality that meets the stringent purity requirements of premium formulations.
Cognitive & Focus Support: L-Theanine has a natural synergistic effect with caffeine, helping improve attention span and cognitive performance. It is widely used in functional beverages and brain health supplements.
Sleep Quality Support: As a natural amino acid, L-Theanine helps relax the mind and body and improves the sleep onset experience. It is a popular ingredient in sleep products and can be combined with GABA, melatonin, and other ingredients.
High Safety Profile: L-Theanine is recognized as GRAS (Generally Recognized as Safe) by the US FDA and approved as a New Food Ingredient by China's National Health Commission. It has a good safety profile within the recommended daily dosage and is suitable for a wide range of consumers.
Excellent Water Solubility: White crystalline powder, readily soluble in water, with a mild sweet and umami taste. Easy to incorporate into various dosage forms such as beverages, candies, tablets, and capsules, with strong formulation compatibility.
Stability & Reliability: Stable physicochemical properties with good heat resistance, suitable for various processing techniques. Long shelf life, convenient for warehousing and long-distance transportation.
Basic Information
Product Name | L-Theanine |
Synonyms | N-Ethyl-L-glutamine; L-γ-Glutamylethylamide |
CAS No. | 3081-61-6 |
Molecular Formula | C₇H₁₄N₂O₃ |
Molecular Weight | 174.2 |
Appearance | White crystalline powder |
Assay | ≥ 98.0% (HPLC) |
Source | Biosynthesis / Tea Leaf Extract |
Packaging & Storage
Packaging: 25kg/fiber drum with double food-grade PE liners; 1kg/aluminum foil bag (customizable upon request)
Storage: Keep sealed, store in a cool, dry place, away from direct sunlight
Shelf Life: 24 months in original packaging under proper storage conditions
Professional Manufacturer: Natural Field Co., Ltd. has been deeply engaged in the plant extract and nutritional ingredient industry for nearly 20 years, with an independent R&D center , ensuring product quality from the source.
Full-Chain Quality Control: A comprehensive quality management system covering raw material sourcing, production processing, and finished product inspection. Equipped with advanced testing instruments including HPLC, GC, and ICP, each batch comes with a COA to ensure stable and traceable quality.
Global Market Coverage: Products are exported to over 100 countries and regions worldwide, with long-term stable partnerships with well-known brands in North America, Europe, and Southeast Asia. We are well-versed in regulatory requirements and market access standards across different regions.
R&D and Technical Strength: A professional R&D team with continuous investment in technological innovation. We hold multiple patents in cutting-edge technologies such as liposome encapsulation and biosynthesis, and can provide customized solutions and technical support for our clients.
Flexible Customization: Support for various specifications (different purity levels, packaging sizes). OEM/ODM services available to meet customer needs, from small-batch trial production to large-scale supply.
Comprehensive Certifications: Equipped with multiple international certifications including ISO22000, HACCP, HALAL, and KOSHER. Products meet food-grade safety standards, helping customers successfully navigate market access requirements in various countries.
Efficient Supply Chain: Ready stock for fast shipment. Long-term partnerships with internationally renowned logistics companies, offering multiple shipping options including sea freight, air freight, and express delivery to ensure safe and on-time delivery.
Professional Service Team: A dedicated sales and technical support team providing one-stop service from product consultation and sample requests to after-sales follow-up. We respond promptly to customer needs and help drive business growth.
The MOQ for standard L-Theanine is 1kg, supporting small-batch sampling. For bulk purchases, we recommend ordering in 25kg/drum units for better value. MOQ for custom specifications can be discussed with our sales team.
Yes. We can provide 10-20g free samples for customer evaluation and testing. Sample shipping costs are borne by the customer (freight collect or prepaid options available). Larger sample quantities can be purchased at small-batch pricing.
Standard specifications are kept in stock and can be shipped within 3-5 business days after payment confirmation. For custom specifications or large orders (500kg+), the production cycle is approximately 15-20 business days, subject to final order confirmation.
We offer multiple shipping options based on order quantity and destination:
Small batches / samples: International express (DHL / FedEx / UPS / EMS), door-to-door service, 3-7 days;
Medium batches: Air freight, 5-10 days;
Bulk orders: Sea freight, 20-40 days, more cost-effective.
Customers may also designate their own freight forwarder or logistics channel.
We support multiple payment methods: T/T (Telegraphic Transfer), Western Union, PayPal, and Letter of Credit (L/C, for large orders). T/T prepaid is recommended for standard orders — efficient and convenient, with shipment arranged upon payment receipt.
We guarantee that every batch is rigorously tested according to quality standards before shipment. If a customer detects non-conformity upon receipt and it is confirmed to be our responsibility, we offer unconditional return or exchange, with corresponding logistics costs borne by us.
We can provide COA (Certificate of Analysis), MSDS (Material Safety Data Sheet), ISO22000 / HACCP certificates, HALAL / KOSHER certificates, sales authorization letters, and more. For market-specific registration documents or other qualifications, please contact our sales team.
Yes. We provide customized services based on customer requirements, including but not limited to: different purity specifications, custom packaging, private labeling, and formulation blending. Please contact our sales team to discuss specific customization options.
L-Theanine is widely used in: dietary supplements (capsules, tablets, powders), functional beverages (energy drinks, relaxation beverages), snack foods (chocolate, candies, chewing gum), dairy products, pet nutrition, and personal care products, among others.
Contact With Us:
E-mail: Sales@natural-field.com
Have a Questions? Call Us:
Add:
5th Floor, Building B, No.57 Keji 3rd Road, Xi'an 710065 China
