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Rehmannia Purchase & Information

Alternative Names

Chinese Foxglove, Chinese Rehmanniae Radix, Chinese RR, Di Huang, Dihuang, Gun-Ji-Whang, Japanese Rehmanniae Radix, Japanese RR, Jio, Juku-Jio, Kan-Jio, R. Glutinosa, Racine de Rehmannia, Rehmanniae, Rehmannia Glutinosa Oligosaccharide, Rehmannia Radac, Rehmanniae Radix, Rehmanniae Root, RR, Rhemannia Root, Rehmannia Steamed Root, RGAE, RGX, ROS, Saeng-Ji-Whang, Sho-jio, Shu Di Huang, Sook-Ji-Whang, To-Byun

Scientific Name

Rehmannia Glutinosa

Why Do People Use Rehmannia?

The oral preparations of Rehmannia glutinosa (Rehmannia), like rehmannia powder, are beneficial for anemia, diabetes, osteoporosis, fever, as a general tonic and for various allergic issues.

Is It Safe To Use?

To rate the safety of rehmannia powder, there is insufficient and unreliable information available. Avoid During Pregnancy and Lactation Rehmannia should be avoided during pregnancy and breast feeding because there is insufficient and unreliable information available.

How Effective Is Rehmannia?

To rate the effectiveness of rehmannia powder, there is insufficient and unreliable information available.

How Rehmannia Works?

The most effective parts of Rehmannia glutinosa are the aerial parts and its roots. The aerial parts contain mannitol and beta-sitosterol. They also contain small quantity of campesterol, stigmasterol, rehmannin, catalpol and vitamin A. Rehmannia root has immunomodulatory effects. Different constituents seem to have immunosuppressive reaction such as acetoside, jionosides A1 and B1, cistanosides A and F, isoacteoside, purpureaside C and echinacoside. A specific extract of steamed root also inhibits discharge of tumor putrefaction element alpha (TNF-alpha) and interleukin-1 (IL-1) in vitro, recommending possible antiinflammatory effects. According to studies conducted in animal models, particular extract of steamed root also appears to lessen histamine levels. According to clinical studies, rehmannia is effective for osteoporosis. In animal models, extract of rehmannia root can enhance the production of osteoblastic bone building and reduce markers of osteoclastic activity. Rehmannia glutinosa is thought to have hypoglycemic impacts because of root manninotriose and oligosaccharides stachyose. Animal models of diabetes recommend that rehmannia root oligosaccharide maybe responsible for decrease in blood glucose. These oligosaccharides may lessen glucose-6-phosphatase activity and enhance hepatic glycogen content.

What Are The Side Effects /Adverse Reactions of Rehmannia?

There is no side effect reported by the oral or topical consumption of rehmannia.

How Rehmannia Interacts With Other Herbs and Supplements?

Supplements & Herbs Containing Hypoglycemic Properties Rehmannia powder may have hypoglycemic impacts. Combination of rehmannia along others supplements and herbs containing hypoglycemic effect may enhance the potential risks of hypoglycemia in some individuals. Products in such category include melon, bitter melon, fenugreek, goat's rue, willow bark, kudzu, ginger, cowhage and others.

How Rehmannia Interacts With Drugs?

Antidiabetes Drugs - Interaction rating between rehmannia powder and anti-diabetic drugs is moderate, so be careful about this mixture. Rehmannia is reported to have hypoglycemic activities. Combination of rehmannia with anti-diabetes drugs may enhance the potential risks of hypoglycemia. Antidiabetic drugs include as glyburide (Glynase PresTabs, DiaBeta, Micronase), glimepiride (Amaryl), rosiglitazone (Avandia), insulin, pioglitazone (Actos) and others.

How Rehmannia Interacts With Foods?

Not known.

How Rehmannia Interacts With Lab Tests?

Glucose - Rehmannia is reported to have hypoglycemic impacts. Combination of rehmannia may reduce blood glucose concentrations and test results.

How Rehmannia Interacts With Diseases and Conditions?

Diabetes - Rehmannia is thought to have hypoglycemic effects. Oral consumption of Rehmannia glutinosa may interact with blood glucose control. So such patient should be careful about their blood glucose levels. Surgery - Rehmannia may also interfere with the level of blood glucose. Consumption of rehmannia powder may interact with blood glucose control after and during surgical activities. So, such patient should stop using rehmannia at least two week before their suggested surgical procedures.

What Should Be the Dose/Administration of Rehmannia?

There is no typical dosage found by the rehmannia.


Rehmannia is a general constituent in fixed combination herbals used in Japanese and Traditional Chinese medicine.

General Certificate of Analysis (COA)

Specification sheet links below are a standard copy of the COA less the batch or lot number and manufactures dates. Specification sheet can be dated and should only be considered as a general information. Please contact and request an up to date COA if needed for specific updated information before placing order by filling out the contact form with product name and SKU number. If ordering quantities of twenty five kilos or more contact for availability.

Specification Sheets

Rehmannia Powder


These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure or prevent any disease.

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