Taking l-theanine daily for a short period is generally safe, although not enough research has been done on its long-term use.

The state of sleep in the US isn't great. In fact, according to a 2022 Gallup Survey, 1 in 3 US adults report having poor sleep. This has led many people to resort to sleep aids to catch up on sleep.

L-theanine is an amino acid naturally found in tea leaves. First linked to tea’s calming effects in the 1940s, it is now sold as a supplement for stress relief, focus and better sleep. Research into ...

"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 ...

L-theanine is an amino acid that occurs naturally in tea leaves and is used in Asian medicine to treat many medical and mental health problems. In a previous blog post, I briefly reviewed the evidence ...

How L-Theanine Works in the Body L-theanine works by directly interacting with neurotransmitters that regulate brain activity by crossing the blood-brain barrier. This amino acid regulates several key ...