Rhubarb Root
Rhubarb Root (Da Huang): A Purging Herb for Constipation, Blood Stasis, and Toxic Heat
Introduction
Rhubarb root, known as Da Huang (大黄) in Traditional Chinese Medicine (TCM), is a powerful purgative herb used to clear heat, unblock the bowels, move blood, and eliminate toxicity. Bitter and cold in nature, it is especially effective for treating acute constipation, high fever with delirium, and blood stasis-related conditions. Its dramatic downward-moving action makes it a critical herb in emergency or stagnation-based formulas.
What Is Rhubarb Root?
Da Huang is the dried root and rhizome of Rheum palmatum or closely related species, native to China and Tibet. In TCM, it is classified as bitter and cold, and it enters the Stomach, Large Intestine, Liver, and Heart meridians. Traditionally, it is used to drain heat, purge accumulation, cool the blood, and invigorate blood flow. It is frequently used in both internal heat-clearing formulas and trauma applications.
Health Benefits of Rhubarb Root
Purges Accumulated Heat and Relieves Constipation
Used for hard, dry stools, abdominal fullness, and distention caused by internal heat.
Clears Heat and Drains Fire
Reduces high fever, delirium, and inflammation in febrile diseases with internal excess.
Invigorates Blood and Dispels Stasis
Used in trauma formulas to treat bruising, swelling, or amenorrhea due to blood stasis.
Eliminates Toxic Heat and Treats Abscesses
Used for skin infections, boils, or intestinal when heat and dampness combine.
Promotes Liver and Gallbladder Function
Modern use includes promoting bile flow and assisting in detoxification and liver support.
How to Use Rhubarb Root
In Decoctions for Acute Constipation or Heat
Use 3–12 grams, often added at the end of the decoction for stronger purging effect.
In Blood-Stasis or Detox Formulas
Found in classic blends like Tao He Cheng Qi Tang or Da Cheng Qi Tang for trauma or internal clumping.
In Topical Applications for Swelling
Powdered Da Huang may be applied externally for boils, abscesses, or bruising.
Where to Buy Rhubarb Root
You can find Da Huang at the following places:
- Chinese herbal medicine shops
- Detox or digestive health-focused apothecaries
- Online retailers such as iHerb, Amazon, or TCM specialty sites
Look for:
- Thick, golden to reddish-brown root slices with a strong bitter aroma
- Wildcrafted or sulfur-free dried root for internal use
- Lab-tested quality for safety and authenticity
Are There Any Side Effects?
Rhubarb root is potent and should be used with care. Overuse can cause cramping, diarrhea, or electrolyte imbalance. It is contraindicated during pregnancy, menstruation, or in cases of weak digestion or cold deficiency. Long-term use is not recommended without supervision.
Conclusion
Rhubarb root, or Da Huang, is a powerful purging and heat-clearing herb in TCM that rapidly unblocks the bowels, moves blood, and clears toxins. Whether used for acute constipation, trauma, or intense internal heat, it delivers strong results when used appropriately and under guidance.
FAQs
Can I take rhubarb root every day?
No, it’s best used short-term for acute symptoms, not for daily or long-term use without professional supervision.
What does rhubarb root taste like?
It has a strong, bitter, and slightly astringent flavor with a cooling aftereffect.
Is rhubarb root safe for children?
Generally not recommended for children due to its strong purgative nature unless prescribed in an emergency formula.