L-theanine is a non-protein amino acid mainly extracted from green tea, it is the predominant amino acid in green tea. L-theanine is considered the main component responsible for the taste of green tea, L-theanine is a nutritional supplement for mood modulation. It inhibits glutamate transport into tumor cells, which causes decreased intracellular glutathione (GSH) levels. L-theanine may have activity in modulating the metabolism of cancer chemotherapeutic agents and ameliorating their side effects.

1. L-theanine may counteract the stimulatory effect of caffeine;

2. L-theanine induces alpha-brain wave activity, which correlates with a perceived state of relaxation.

3. L-theanine helps curb a rising heart rate and blood pressure, and a few small human studies have found that it reduces anxiety;

4. L-theanine increases the activity of doxorubicin, idarubicin, pirarubicin, cisplatin, and irinotecan in tumor cells.

1. Packing: Packed in fiber drum, LDPE bag inside. Net weight: 25kgs/drum; 
2. Storage: Keep tightly sealed, store away from moisture, strong heat and sunlight;
3. Lead time: Usually 7-10days after order confirmed;
4. Shelf Life: 2 years if sealed and stored in the recommended conditions;