What are the functions and benefits of Rehmannia glutinosa (Shu Di Huang)?

Rehmannia root, also known as Shu Di Huang, is the root of the rehmannia plant processed through steaming. It typically has various therapeutic effects, including delaying aging, nourishing the liver and kidneys, strengthening the body, regulating menstruation and relieving pain, and replenishing blood and nourishing yin. Detailed explanations are as follows:

1. Delaying Aging

Shu Di Huang contains abundant antioxidant components that can remove free radicals, slow down the cellular aging process, and thus achieve anti-aging effects. Long-term appropriate consumption helps maintain skin elasticity, delay wrinkle formation, and improve overall health.

2. Nourishing the Kidneys and Liver

Shu Di Huang helps strengthen kidney function and improve symptoms of kidney yin deficiency. At the same time, it also helps protect the liver and alleviate symptoms in patients with liver disease. According to traditional Chinese medicine theory, the liver and kidney share a common origin; therefore, while nourishing the kidneys, Shu Di Huang can also benefit the liver.

3. Strengthening the Body

Shu Di Huang can enhance immune function and improve resistance to diseases. Long-term use significantly improves physical constitution and has preventive and therapeutic effects on conditions such as weakness, frequent illnesses, susceptibility to colds, and chronic fatigue syndrome.

4. Regulating Menstruation and Relieving Pain

For women, Shu Di Huang helps regulate menstruation and relieve dysmenorrhea. It promotes blood circulation and resolves blood stasis, adjusts endocrine function, and alleviates symptoms such as irregular menstruation and abdominal pain during menstruation.

5. Replenishing Blood and Nourishing Yin

Shu Di Huang has a soft, moist texture with a sweet and slightly warm taste, making it an important herb for blood replenishment. It is commonly used to treat blood deficiency syndromes, such as sallow complexion, dizziness, palpitations, and insomnia. Additionally, it nourishes yin and has therapeutic effects on symptoms caused by yin and blood deficiency.

However, Shu Di Huang is relatively sticky and greasy in nature, which may hinder digestion. Therefore, it should be taken in appropriate amounts as directed by a physician. Individuals allergic to this herb should avoid taking it.