
Rehmannia (Rehmannia glutinosa)
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- Circulatory
- 5 conditions
- Licensed photo
Overview
Rehmannia (Rehmannia glutinosa) is a perennial growing to about 1-2 ft (30-60 cm), with sticky leaves and purple tubular flowers. One of the most prized herbs in Traditional Chinese Medicine, it’s considered both cooling (raw) and nourishing (prepared), supporting liver, kidneys, blood, and longevity.
Traditional uses & properties
Blood & Yin Tonic: Rebuilds blood after blood loss or in deficiency states; both raw and prepared forms are used. Liver & Kidney Support: Helpful in hepatitis, immune support, and regulating blood sugar levels. Cooling & Fever-Reducing (raw root): Addresses “heat” patterns, such as high fevers, thirst, and inflamed tissues. Warming & Strengthening (cooked root): Tonifies the kidneys and considered beneficial for age-related weaknesses and chronic conditions.
Traditional preparations
Traditional texts describe the preparations below, and where those texts give specific amounts, the amounts are quoted here as part of that record. This is a record of historical practice, not a dosage recommendation - the figures are what the sources say, not what HerbMate tells you to take. Amounts, potency, and safe use vary enormously by preparation, plant part, and person.
Chew 5 g of root 1-3 times a day, or make a decoction with 5 g of root to 1 cup (250 ml) of water and take 1-3 times a day
Simmer 15 g root in 2 cups (500 ml) red wine for 20 minutes. For blood loss and anemia, take 1/2 cup (100 ml) daily
Safety & precautions
Pregnancy: Consult a practitioner. Diarrhea or Appetite Loss: Not advised if these symptoms are prominent, as rehmannia can be cooling and heavy on digestion.
Drug & food interactions
Interaction data is not available for this herb - talk to a pharmacist before combining it with any medication. A blank entry here means we have not documented interactions, not that none exist.
Habitat
Native to China, rehmannia thrives on sunny mountain slopes, especially in Henan province. Grown from seed or cuttings, the root is harvested in autumn. There are two main preparations: raw (sheng di huang) and cooked (shu di huang), each with different energetic uses.
Traditionally used for
- Anaemia4 herbs · 2 free
- Liver Support10 herbs · 2 free
- Menstrual Pain11 herbs · 2 free
- Eczema7 herbs · 2 free
- Psoriasis5 herbs · 2 free
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Frequently asked questions
What is Rehmannia (Rehmannia glutinosa) traditionally used for?
Traditional sources describe Rehmannia (Rehmannia glutinosa) as follows: Blood & Yin Tonic: Rebuilds blood after blood loss or in deficiency states; both raw and prepared forms are used. Liver & Kidney Support: Helpful in hepatitis, immune support, and regulating blood sugar levels. Cooling & Fever-Reducing (raw root): Addresses “heat” patterns, such as high fevers, thirst, and inflamed tissues. Warming & Strengthening (cooked root): Tonifies the kidneys and considered beneficial for age-related weaknesses and chronic conditions.
How is Rehmannia (Rehmannia glutinosa) prepared?
Traditional texts describe the preparations below, and where those texts give specific amounts, the amounts are quoted here as part of that record. This is a record of historical practice, not a dosage recommendation - the figures are what the sources say, not what HerbMate tells you to take. Amounts, potency, and safe use vary enormously by preparation, plant part, and person. Liver Support: Chew 5 g of root 1-3 times a day, or make a decoction with 5 g of root to 1 cup (250 ml) of water and take 1-3 times a day Anemia: Simmer 15 g root in 2 cups (500 ml) red wine for 20 minutes. For blood loss and anemia, take 1/2 cup (100 ml) daily
What safety cautions apply to Rehmannia (Rehmannia glutinosa)?
Pregnancy: Consult a practitioner. Diarrhea or Appetite Loss: Not advised if these symptoms are prominent, as rehmannia can be cooling and heavy on digestion.







