L-Theanine
ingredient
About
L-Theanine, also called L-γ-glutamylethylamide or N5-ethyl-L-glutamine, is a non-proteinogenic amino acid related to glutamic acid and L-glutamine, produced by the tea plant and some fungi.[1] It was found in green tea in 1949, isolated from gyokuro leaves in 1950, and makes up about 1 to 2 per cent of the dry weight of green tea leaves.[1] PepsiCo lists it in Mtn Dew Amp Game Fuel Charged Berry Blast.[2]
Products (3)
Mtn Dew Amp Game Fuel Charged Berry Blast 16 fl oz Mountain Dew · 16 floz Stimulants/Energy Drinks - Ready to Drink 012000180590 
Mtn Dew Amp Game Fuel Charged Original Dew 16 fl oz Mountain Dew · 16 floz Stimulants/Energy Drinks - Ready to Drink 012000180613 
Mtn Dew Amp Game Fuel Charged Tropical Strike 16 fl oz Mountain Dew · 16 floz Stimulants/Energy Drinks - Ready to Drink 012000180606 Also known as
- theanine en
References
- ↑ Wikipedia: Theanine Wikipedia. publication. Accessed 2026-09-25. cc-by-sa-4.0. Wikipedia contributors.
- ↑ SmartLabel ingredients tab for UPC 012000180590 PepsiCo. manufacturer. Published 2022-11-02. Accessed 2026-09-25. Record: 012000180590-0015. Ingredient list and caffeine content.
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