Theanine

L-theanine is an amino acid naturally found in tea leaves (especially green tea) and is known for its calming effect without causing drowsiness.

What makes it unique is its action on brain neurotransmitters. It contributes to the balance of dopamine, serotonin, and GABA – the latter acts as a natural "brake" during times of greater tension. In parallel, it stimulates alpha wave activity in the brain, a marker associated with a state of relaxed wakefulness: a calm yet attentive mind.

The main areas where it is studied:

Focus and attention — helps maintain concentration and reaction time, with a more noticeable effect in those who tend to feel under pressure.

Relaxation and stress management — promotes a state of calm without sedation, particularly useful for those experiencing mental or emotional tension.

Sleep quality — by supporting serotonin production (which converts to melatonin), it contributes to falling asleep more easily and to more restorative rest.

It is an ingredient with a high safety profile and is well-tolerated, which explains its frequent presence in formulas aimed at balancing serenity and mental clarity.