Medically reviewed by Erika Prouty, PharmD Key Takeaways L-theanine is an amino acid that may improve attention and focus by ...

L-theanine supplements are touted for stress relief, focus and better sleep. Although the evidence so far is preliminary, ...

Medically reviewed by Mary Choy, PharmD Key Takeaways L-theanine supplements may improve sleep quality and reduce the time it takes to fall asleep. Doses studied by researchers range from 200 ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Who wouldn't want to take a pill and quickly experience less stress and anxiety without unpleasant side ...

The amino acid l-theanine found in green tea is widely used in China, Japan, and other Asian countries to treat anxiety and depressed mood. Animal studies confirm that l-theanine increases brain ...

L-Theanine is a non-proteinogenic amino acid predominantly found in tea leaves that has garnered considerable attention for its capacity to alleviate psychological stress and enhance cognitive ...

L-theanine, a distinctive non‐protein amino acid predominantly found in green tea, has garnered significant attention for its multifaceted roles in modulating immune function and mitigating oxidative ...