L-Theanine capsules (also known as Theanine or 5-N-Ethyl-Glutamine) is a relatively rare phytochemical found in a few species of tea and mushrooms and is known for its synergistic effects with caffeine. It has a molar mass of 174.200 g/mol and the chemical formula C7H14N2O3.
L-Theanine Capsules Benefits and Uses
L-Theanine is very similar in structure to glutamine and GABA and is anecdotally consumed for its perceived antioxidant and relaxation effects, without promoting drowsiness. It has a strong synergistic effect with caffeine.
Chemically, L-Theanine is the enantiomer of D-Theanine, and it is a member of the glutamine derivatives class of compounds, which refers to compounds that contain glutamine or a derivative. Both L-Theanine and L-Glutamine are non-proteinogenic amino acids (not used to synthesize proteins). L-Theanine is water soluble and moderately acidic.
L-Theanine capsule supplements are also known by a few different names, including:
- Theanine
- 3081-61-6
- Theanin
- N-Ethyl-L-glutamine
- (S)-2-Amino-5-(ethylamino)-5-oxopentanoic acid
- N5-Ethyl-L-glutamine
- L-gamma-Glutamylethylamide
- N-gamma-Ethyl-L-glutamine
- N(5)-ethyl-L-glutamine
Scientific Consensus
Supplementing with this product is likely to be safe, even at larger serving sizes. Doses of up to 400 mg have been safely administered for a period of 8 weeks. It is safe to take with caffeine. Theanine capsules may cause mild side effects like headaches and drowsiness.
DO NOT EXCEED THE RECOMMENDED SERVING SIZE. Use with caution. Do not use if pregnant or breastfeeding.
