Passion flower, also known as Passiflora is a genus of over 200 species of flowering plants. Varying shades of purple, reds, creams, and white festoon the vines. The center corona can be made up of straight or wavy spikes that can vary in colour as well. One of the most important qualities of passionflower is its ability to calm a busy mind. Promising research has also shown the passionflower herb aid with insomnia, anxiety and reducing symptoms and difficulties with withdrawal symptoms. It appears to boost the level of gamma-aminobutyric acid (GABA) in your brain. This compound lowers brain activity, which may help you relax and sleep better. Some trials suggest that purple passionflowermay also relieve anxiety. A study reported in the journal Anesthesia and AnalgesiaTrusted Source examined its effects on patients scheduled for surgery. Patients who consumed it reported less anxiety than those who received a placebo.