Chinese foxglove root is a perennial herb found in northern China. It grows 6-8 in (15-20 cm) tall and has long oval leaves that are covered with fine hairs, fluted flowers that are reddish orange tinted with purple, and a round fruit. The root is thick and reddish yellow. Chinese foxglove root is collected in the fall. Its Latin name is Rehmannia glutinosa and it is also called Rehmannia chinensis.
In China, Chinese foxglove root is used as a remedy for many different ailments: blurred vision, chronic fever, constipation, heart palpitations, hearing problems, hot flashes, insomnia, light-headedness, low back pain, menstrual irregularity and uterine bleeding (especially after childbirth), night sweats, restlessness, and stiff joints. It is also used to combat the effects of aging.