Too much of either magnesium or L-theanine can cause side effects or interactions with medications. Read more: Tips To Help ...

A 2021 study focusing on the effects of L-theanine on cognitive function in older adults appears to support this. Researchers in this study looked into whether the regular intake of theanine in ...

Medically reviewed by Kristie Reed, PharmD L-theanine may have benefits for depression, sleep, and stress. It has antioxidant ...

There’s evidence the effects of caffeine in a cup of tea are enhanced by an amino acid it contains, called L-theanine, if it is drunk regularly. The research finds “L-theanine may interact ...

The potent combination of caffeine and catechins in green tea may accelerate metabolism and enhance fat burning. Research ...

Green tea is gaining popularity as a morning energy boost, offering a gentler pick-me-up than coffee while improving focus ...

L-theanine behaves similarly to glutamate ... Supplements may interact with certain medications and have risky side effects. Especially if you're pregnant or breastfeeding, it is important ...