| Key Features | Details |
|---|---|
| Scientific Name | Rehmannia glutinosa (Dried Root) |
| Top Benefits | Cools Body Heat, Supports Adrenals, Hydrates Dry Skin |
| Best For | “Yin Deficiency” (Night sweats, hot flashes, thirst) |
Table of Contents
1. Meet the “Cooling” Superfood of the East
While Ginseng is famous for heating and energizing, Dried Rehmannia Root (Gan Di Huang) is the master of “cooling” and replenishing. In the world of herbalism, it is revered for its ability to clear internal heat and nourish body fluids. It is particularly effective for those dealing with [Circulation & Heart Health] issues related to inflammation or overheating.
2. Raw vs. Dried vs. Prepared: What’s the Difference?
If you search for Rehmannia on Amazon or iHerb, you’ll see different types. Choosing the right one is crucial.
- Fresh/Raw (Xian Di Huang): Extremely cooling. Used for high fevers and acute inflammation.
- Dried (Gan Di Huang): The balanced choice. It cools the blood and nourishes fluids without being too harsh. Great for daily wellness.
- Prepared (Shu Di Huang): Steamed with wine until black. It becomes “warming” and is a heavy tonic for blood building (often used for fertility/anemia).
3. 3 Science-Backed Benefits of Dried Rehmannia
① Cools “False Heat” (Menopause & Night Sweats)
In TCM, “Yin Deficiency” creates false heat—feeling hot at night, night sweats, and flushed cheeks. Dried Rehmannia cools this internal fire, making it a popular natural support for [Women’s Hormonal Balance] during menopause.
② Clears Blood Heat & Skin Inflammation
When “heat” gets trapped in the blood, it can manifest as rashes, eczema, or nosebleeds. Rehmannia’s “cooling blood” properties help detoxify the system and calm inflammatory skin conditions.
③ Adrenal Support & Hydration
It acts as a deeply restorative tonic for the kidneys and adrenals (the body’s energy battery). It also promotes the production of body fluids, helping with chronic dry mouth and thirst.
4. How to Brew Rehmannia Root Tea
Dried Rehmannia has a slightly sweet but bitter taste. It pairs perfectly with Jujube (Red Dates) or Licorice root to balance the flavor.
- Rinse 20g (approx. 0.7 oz) of Dried Rehmannia slices.
- Add to a pot with 2 liters (8 cups) of water. Add 4-5 Jujubes for sweetness.
- Bring to a boil, then simmer on low heat for 30–40 minutes.
- Strain and enjoy warm. You can store it in the fridge and drink it as a cooling water substitute.
5. Precautions & Side Effects
⚠️ Digestive Sensitivity Warning
Rehmannia is cloying and rich. If you have a weak stomach, loose stools, or bloating, it might be hard to digest. Adding a slice of Ginger can help prevent digestive upset.
6. Conclusion: The Cooling Yin Tonic
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FAQ: Frequently Asked Questions
Q: Can I take this with iron supplements?
A: It contains tannins which may inhibit iron absorption. It is best to take it 1-2 hours apart from iron supplements or meals.
Q: Is it safe for daily use?
A: Yes, for short periods to clear heat. However, due to its cold nature, long-term use without professional advice is not recommended if you have a cold constitution.
🌿 Written by Wellness Curator
Bridging Eastern wisdom and Western wellness to provide trusted herbal guides.
Disclaimer: This content is for informational purposes only and is not medical advice. Consult a healthcare professional before starting any new herbal regimen. This post contains affiliate links.