A friend gave me some licorice tea, and it was delicious. She makes it by macerating the licorice twig and pouring boiling water over it and leaving it to steep. It is naturally very sweet. I googled the benefits of licorice and found it interesting. It said it is good in treating inflammatory diseases and also helps with constipation, both of which apply to PD. It warns against having more than 1 or 2 cups a day. Does anyone know of any research done on licorice in relation to PD?