Standardized 3.5% ExtractSupports a Calm MoodPassion Flower (Passiflora incarnata) has been used for centuries by Native North and South Americans to promote a calm mood. More recent scientific studies have indicated that certain constituents of Passion Flower may offer temporary relief from nervousness and feelings of stress. Passion Flower extracts have been shown to aid in relaxation, and to alleviate occasional, but minor tenseness and restlessness.