Viridian L-Theanine and Lemon Balm Vegetable Capsules | Stress & Anxiety | Mental Memory | Mental Cognition | Mental Health | Insomnia | Provides appropriate levels of the amino acid L-Theanine with a high quality Lemon Balm extract, in a single capsule for easy daily use. An anti-dote for modern lifestyles. Stress can cause people to feel strung out, restless, anxious, tense, nervous and irritable as well as lose concentration and suffer brain fog. A number of studies have shown that the natural ingredients L-theanine and Lemon balm can help safely and quickly ease the symptoms of stress and improve mental performance and wellbeing. Vegan.