Passionflower is a perennial climbing plant that can grow up to 30 feet long, native to the American continent and cultivated as a yard plant in Europe. The flower is considered to be a symbol of the passion of Jesus Christ, hence the name.
Passionflower has neuroleptic properties, including mild sedation and anti-anxiety properties. In tests conducted in the 1930s, its mode of action has been found to be different from that of most sedatives (sleeping pills), making it a class of non-additive herbs that promote relaxation. The calming effects of passionflower have made it popular in treating a variety of conditions including nervousness and insomnia.
Passionflower also has antispasmodic effects on smooth muscles in the body, including the digestive system. In animal experiments, the researchers found that the plant slowed the speed of food passing through the digestive tract, thus promoting digestion.