What is Theanine?

While browsing supplements to improve your health, you may have come across theanine and may find yourself wondering what is theanine? Theanine or L-Theanine is an amino acid that may improve cognitive functioning and reduce stress. If you’re anything like me, both of these sound helpful. I have a busy, stressful life, and reducing stress while improving my cognitive function would help me live a better life.