Parsley owes its distinctive flavor to apiol, a dimethoxy-methylenedioxy-allylbenzene. Apiol has been used in the illicit production of designer drugs. Small doses have also been used in treating menstration disorders; however, large doses are toxic and may cause liver and kidney damage. | Parsley owes its distinctive flavor to apiol, a dimethoxy-methylenedioxy-allylbenzene. Apiol has been used in the illicit production of designer drugs. Small doses have also been used in treating menstration disorders; however, large doses are toxic and may cause liver and kidney damage. |