Passion Flower
One lesser known herb studied to treat anxiety is passion flower, from the passiflora tropical fruit. According to the German Commission E, passion flower appears more effective and safer than a leading antidepressant, oxazepam, used for anxiety. The liquid extract of the flower is the most common formulation used. However, passion flower may be possibly unsafe during pregnancy when ingested, according to the American Pregnancy Association, so topical use might be considered as a safer alternative.