Use of extracts of the leaves of lemon verbena (aloysia citriodora) for increasing the neuronal, cerebral availability of neurotransmitters selected from the group of serotonin, dopamine, noradrenaline

A method of treating and/or preventing a neurological disorder, the method comprising:

• providing a formulation to a person to treat a neurological disorder and/or a tendency toward a neurological discorder,
• wherein the neurological disorder is selected from the group consisting of mental stress, stress-related exhaustion conditions stress disorders, somatoform diseases, acute and/or posttraumatic stress disorders, chronic fatigue syndrome, attention deficit hyperactivity disorder (ADHD), a cognitive performance issue, a neurodegenerative disease associated with accumulated proteins/peptides, mental stress, or stress symptoms, and a combination thereof, wherein the formulation comprises an extract prepared by alcoholic-aqueous extraction from leaves of lemon verbena (Aloysia citriodora) using an extractant having an alcohol concentration of 10-60% v/v, wherein said extract has a content of essential oil of less than 0.05% by weight, based on the extract without additives.