L-Theanine

Evidence: Strong

Amino acid found naturally in green tea.

L-theanine promotes alpha-wave activity associated with relaxed alertness, often paired with caffeine for smoother focus.

Products with L-Theanine

Pure EncapsulationsSleep

A gentle, highly bioavailable magnesium glycinate formula designed for evening rituals.

Now FoodsFocus

Pure L-theanine for relaxed alertness — pairs well with morning coffee.