The Purpose of L-Theanine Supplementation: A Comprehensive Guide
                                
                                
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                                    5 min read                                
                            
                                L-theanine, a unique amino acid primarily found in tea leaves, has been clinically shown to cross the blood-brain barrier and modulate brain chemicals. The purpose of L-theanine supplement is to promote a state of relaxed alertness, supporting mental clarity, focus, and improved sleep quality without causing sedation.