Passion flower also possesses natural tranquilizing properties, and is similarly useful in the treatment of insomnia. The plant contains various flavonoids and alkaloids, which depress the central nervous system. So gentle is passion flower's sedative action that, in Italy, it is used to treat hyperactive children. The dried leaf and stems induce a natural sleep with no unpleasant side effects. Commonly known as a primary ingredient in beer, the hop plant also helps calm restlessness and eases insomnia.
Hops contain a volatile oil which produces sedative effects.
However, the basis of this action is not yet understood. Lemon Balm has a soothing and calming action, helping to relieve the anxiety that often accompanies sleeplessness. It is especially useful when combined with other herbs such as valerian. In one study, a combination of valerian and lemon balm was compared with the prescription sleep aid, benzodiazepine. Among the study participants, the herbal preparation showed an effect comparable to that of the benzodiazepine preparation, in addition to a deeper sleep.