Passion flower (Passiflora incarnata L.) is a perennial creeping vine, originating in the american continent and grown in USA, north-Africa and in different European Countries. Its fitocomplex includes many components like phenolic acids, coumarins, phytosterols, and essential oils, beside main characteristic compounds consisting in flavonoids (vitexin).

Passion flower extracts are used to treat tenseness, restlessness and irritability, with difficulty in sleeping. They are typically used in combination with valerian, and other botanical extracts.