L-theanine is an organic compound found it tea leaf. It is non-protein amino acid struck popularity because of its potential use in mood relaxation, stress relief, insomnia and mental alertness.

Anxiety and stress relief

In a study published at US National Library of Medicine, when L-theanine used as supplements along with psychopharmacological drugs such as antidepressants and antipsychotics drug, showed effectiveness in mental disorders such as depression, stress and anxiety.

Study also noted that noticeable effects were experienced within few hours. Because of its fast relief effects it is seen as potential long term benefits solution.

Increased Mindfulness & Alertness

Its natural occurrence in tea leaf makes it natural remedy for insomnia. Drinking tea with higher l-thianine helps improve alertness, found in a study published at ScienceDirect.

Same study also suggests that 200mg l-theanine along with another organic antioxidant compound called Catechin further improves mindfulness and alertness.