Medically reviewed by Lindsay Cook, PharmD Key Takeaways L-theanine and magnesium are natural compounds that help with ...

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 ...

A recent study published in the British Journal of Nutrition provides evidence that a high-dose combination of L-theanine and caffeine can improve attention and reaction time in people who are acutely ...

As the UK struggles to sleep, many of us are turning to sleep teas and functional brews. But with active doses often low, is ...

In a recent study published in Scientific Reports, researchers evaluate the efficacy of a novel nutraceutical formulation containing L-theanine supplemented with valerian, saffron, and lemon balm ...