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Dark blue Gaba is produced using a special technology for processing tea leaves on the island of Taiwan. The basis of the Dark Blue Gaba is the legendary Taiwanese oolong Alishan. During the production process, it goes through a special stage: tea leaves are aged in vacuum tanks, being treated with nitrogen in parallel. Due to this effect, the amount of natural gamma-aminobutyric acid – GABA in tea leaves increases tenfold, and this makes it an excellent natural neurotransmitter. Useful properties: relieves tension, activates the brain.