• Sample: Avaliable
  • MOQ: Only 1 Kilograms
  • Packing: Aluminum foil bags,Fiber drums
  • Logistics: By Express(5-7 Days), By Air, By Sea
  • Payment: T/T, Western Union, Paypal


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L-Theanine is naturally found in green tea. It can also be obtained by heating L-glutamic acid under high pressure into pyrrolidone carboxylic acid, adding anhydrous monoethylamine and heating under high pressure. L-Theanine is a unique free amino acid in tea, L-Theanine is glutamic acid γ-ethylamide, white crystalline powder, odorless, sweet and sour taste. Insoluble in alcohol and ether, soluble in water. Twenty-six amino acids (6 non-protein amino acids) were identified in tea, generally accounting for 1%-5% of the dry weight of tea, while L-Theanine accounted for more than 50% of the total free amino acids in tea.

As the characteristic non-protein amino acid with the highest content in tea, L-Theanine is safe and non-toxic and has no side effects, effectively improving sleep quality and anti-anxiety, but does not cause drowsiness, lowering blood pressure, improving brain function, promoting the brain’s learning and memory function, enhancing Immunity, anti-fatigue, enhance the efficacy of anti-tumor drugs. At the same time, L-theanine, as an alkylamine, can activate γ-T immune cells to promote cell proliferation and cytokine secretion, enhance the ability to resist tumor cells, reduce the infection of external microorganisms, and reduce the chance of the body suffering from colds and flu.

Learn more information about L-Theanine,  please CLIK the link to read this blog: https://xianherb.com/what-are-the-benefits-of-l-theanine/

L-Theanine COA

Items Specification Test results
Description White to yellowwish White crystals or crystalline powder Conforms
Solution clarity Clear and colorless Clear and colorless
Assay 98.0-102.0% 99.9
PH 4.5-6.0 5.21
Loss on drying,% ≤1.0% 0.10
Residue on ignition,% ≤0.20% 0.08
Chloride ≤0.020% <0.02%
Sulfate ≤0.020% <0.02%
Particle size 90% through 0.18mm mesh Conform
Heavy metals ≤10ppm <10ppm
Iron(Fe) ≤30ppm <30ppm
Arsenic(As) ≤2ppm <2ppm
Mercury(Hg) ≤0.1ppm <0.1ppm
Cadmium ≤1ppm <1ppm
Total Plate Count ≤1000 CFU/g 130 CFU/g
Yeast and Molds ≤100 CFU/g <100 CFU/g
Coliforms Negative Negative
Salmonella Negative in 25g Conforms

Packing and shipping _ MEETSUPPLEMENT

MEETSUPPLEMENT is a brand of Xi’an Herb Bio-Tech Co.,Ltd, we are a professional supplier of L-Theanine, wholesale L-Theanine, bulk supply L-Theanine. Contact us to boost your business!

Additional information

Product Name







White crystalline powder




Enhance memory, Sleep health


Food Additives, Health supplement

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