L theanine is a fascinating amino acid that is present in normal tea and is believed to be responsible for that unique nice cup of tea feeling it has been shown to raise levels of gaba and alpha waves in the brain and this can result in a calming effect without drowsiness as a result l theanine is widely recommended by practitioners for those during times of stress and anxiety lemon balm has a long history of use in traditional herbal medicine primarily as a sedative and relaxant with re