Theanine
An amino acid naturally found in tea leaves that promotes relaxation without drowsiness, supports cognitive function, and helps manage stress
Amino Acids
Non Essential Amino Acids
Research: Extensive
Scientific Name
L-Theanine (N-ethyl-L-glutamine)
Also Known As
Theanine
L-Theanine
Tea Amino Acid
5-N-Ethyl-Glutamine
Benefits
- Promotes relaxation without sedation
- Supports stress management
- Enhances focus and attention
- Supports cognitive function
- Promotes healthy sleep quality
- May support cardiovascular health
Common Forms
Capsules
Tablets
Powder
Tea (particularly green and black tea)
Chewables
Gummies
Safety Notes
Generally recognized as safe. Well-tolerated with minimal side effects even at higher doses. Safe for most people when used as directed. No significant drug interactions known, though it may enhance the calming effects of certain medications.
Related Products
No related products
Types of Theanine
L-Theanine
The active isomer of theanine found naturally in tea and used as a dietary supplement
Amino acids
Non essential amino acids
Research: Extensive
Available Forms:
D-Theanine
The less active isomer of theanine that may be present in small amounts in some synthetic theanine products
Amino acids
Non essential amino acids
Research: Limited
Available Forms:
Tea Extract with Theanine
Natural tea extracts standardized for theanine content
Amino acids
Non essential amino acids
Research: Moderate
Available Forms:
Theanine Complex Formulations
L-Theanine combined with synergistic compounds for enhanced or targeted effects
Amino acids
Non essential amino acids
Research: Moderate
Available Forms: