100mg is an amino acid that enhances relaxation but also supports a sense of well-being. L-theanine has been compared to meditation, massage, and aromatherapy. The Japanese have long known that L-theanine, an amino acid derived from green tea, supports calm. (10) L-Theanine also supports the normal production of GABA. L-theanine supports healthy cognitive function (11) L-theanine helps maintain healthy levels of dopamine, a critical brain hormone that is depleted by age-related stress factors. (12)

10. Nutrients. 2016 Jan 19;8(1). pii: E5310.

11. Acta N. 2017 Apr;29(2):72-7912.

12. J Herb Pha. 2006;6(2):21-30