Mugwort has been used by witches for millenia to induce vivid dreams. 
 
It is most commonly used to treat disorders of the digestive tract and aid in all digestive functions and is said to have properties that are antifungal, antibacterial, expectorative and antiasthmatic. It’s considered a good herb for gastric disorder, stomach pain and bowel complaints. It’s used for poor appetite, indigestion, travel sickness and stomach acidity.
Mugwort is thought to be effective in treating a wide range of parasitic infections, such as tapeworm, roundworm and threadworm. It is also considered effective against parasites like ringworms that infect the skin.
Traditionally, this herb is used to stimulate irregular or suppressed menstruation. Some believe it stimulates the uterus and it’s useful for menstrual pain and cramps. Furthermore, it has been used to induce miscarriage probably due to the herb’s ability to interfere with menstruation.