Theanine

**Semantic type:** Pharmacologic Substance

**Definition:** A non-protein water-soluble amino acid found in tea plants, with potential antioxidant, anti-inflammatory, neuroprotective, anti-cancer, anti-anxiety, metabolic regulatory, cardiovascular protective, liver and kidney protective, and immunomodulatory activities. Theanine relaxes the mind without causing drowsiness, and may modulate brain function, and improve mental alertness and attention.

**Synonyms:** - L-theanine - N-Ethyl-L-Glutamine - N-Ethyl-L-glutamine - Suntheanine - THEANINE - Theanin