Korean Rehmannia Root – Prepared Shu Di Huang Blood Tonic 5.25oz

Kosbee Korean Prepared Rehmannia Root (숙지황, Shu Di Huang) is a 100% authentic slow-steamed and sun-dried rehmannia root sourced from Korea — traditionally prepared through repeated steaming cycles to deepen its Yin-nourishing and blood-supporting properties, with no added sugar, preservatives, or fillers.

In Korea, the finest medicinal herbs are not rushed. Raw rehmannia root is transformed through patient cycles of steaming and drying — emerging as the jet-black, gently sweet root known as Sugjihwang. This is not mere processing; it is alchemy. The same root, made exponentially more bioavailable and deeply restorative by the hands of tradition.

The Black Diamond of Korean Herbs

While the Western market is flooded with bulk Chinese-origin Shu Di Huang of uncertain processing standards, Kosbee sources directly from Korea — where strict agricultural and food-safety standards govern every step. The result is a deeply black, gently sticky root with a naturally rich, molasses-like sweetness: zero added sugar, all earth.

What's Inside Every Bag

Potassium — 436 mg per serving (9% DV)

Each 10g serving delivers 436 mg of natural potassium — supporting healthy fluid balance, nerve signaling, and muscle function. A meaningful contribution from a whole-herb food source, not a fortified supplement.

Iron — 1 mg per serving (6% DV)

Traditional TCM identifies rehmannia as a primary blood-nourishing herb. Modern nutrition backs this: each serving contributes 6% of the Daily Value for iron, supporting healthy red blood cell production and sustained energy.

Natural Yin-Nourishing Compounds

Traditionally used in Korean and Chinese herbal medicine to replenish Yin — the body's deep reserves of moisture, rest, and restorative energy. Particularly valued for women's cyclical wellness, post-partum recovery, and age-related dryness.

Zero Added Sugar

The gentle sweetness comes entirely from the root itself — a natural byproduct of the slow-steaming preparation. No syrups, no sweeteners, no additives. Just the root as tradition intended.

Who This Herb Is For

Women seeking hormonal balance — those navigating menstrual irregularity, perimenopause, or postpartum recovery who want a plant-based, TCM-rooted alternative to conventional supplements. TCM patients and acupuncture clients who have been advised to take a Yin or Blood Tonic and want a trustworthy Korean-origin whole herb to brew at home. Chronic fatigue sufferers who are done with caffeine as a band-aid and want a deep, restorative adaptogenic tonic that works at the root level.

How to Use Prepared Rehmannia Root

Vitality Tea (Classic Brew): Add 10–20g (approx. ¼–⅓ cup) of prepared rehmannia root to 1 qt (1 L) of water. Simmer on the lowest heat for 60 minutes or more. The broth deepens to a rich, dark color with a naturally sweet, earthy depth — reminiscent of dark molasses or roasted dates. Sip warm throughout the day.

Si Wu Tang — The Women's Four-Herb Blend: Simmer prepared rehmannia with Angelica Root (당귀, Dong Quai), Cnidium (천궁, Chuan Xiong), and White Peony Root (백작약, Bai Shao) for the classic Si Wu Tang decoction — one of the most widely used women's wellness formulas in East Asian herbal medicine. Kosbee carries each of these herbs individually so you can blend your own at home.

Restorative Bone Broth: Add 2–3 pieces of prepared rehmannia to your samgyetang, galbitang, or any Asian bone broth. The root deepens the broth's color, adds mineral complexity, and brings centuries of nourishing tradition to the pot.

⚠️ Storage: Due to its naturally moist, sticky texture, refrigerate after opening. Press out any air and reseal the zip bag tightly after each use. If you have a sensitive digestive system, start with a smaller amount and consider simmering with a few slices of fresh ginger to support digestion.

Origin Transparency You Can Trust

Most prepared rehmannia available in North America is sourced from China, often with limited visibility into processing methods or agricultural standards. Kosbee's Korean Prepared Rehmannia Root is sourced from Korea, where food-grade herbal processing is held to rigorous standards. Every batch comes with a clear Nutrition Facts label — no guesswork, no ambiguity about what you're putting in your body.

Ships from our New Jersey warehouse within 1 business day.

Frequently Asked Questions

Is this "prepared" rehmannia different from raw rehmannia root?

Yes — significantly. Raw rehmannia (生地黄, Saeng Jihwang) is used for cooling and clearing. Prepared rehmannia (熟地黃, 숙지황) undergoes repeated steaming and drying cycles that transform its chemistry: it becomes warming, deeply nourishing, and more easily absorbed — making it the preferred form for Yin and blood-tonifying applications in TCM and Korean herbal medicine.

How do I brew prepared rehmannia root at home?

Add 10–20g to 1 qt (1 L) of water and simmer on low heat for at least 60 minutes. The longer the simmer, the deeper and richer the broth. Drink warm as a daily tonic tea. For digestive comfort, add 2–3 slices of fresh ginger to the pot. Rehmannia root is not typically eaten — remove and discard after brewing.

Are there any safety concerns or interactions?

Prepared rehmannia is generally well-tolerated, but its rich, dense nature may cause bloating or digestive sluggishness in those with weak digestion — brew with ginger if this is a concern. People managing blood sugar levels should consult a healthcare provider before regular use, as rehmannia may affect glucose metabolism. Pregnant or nursing individuals should consult a qualified practitioner before use. Contains no Big 9 allergens.

How does Korean-origin rehmannia compare to Chinese-origin?

Both originate from the same botanical species, but Korean agricultural standards, soil conditions, and post-harvest handling practices differ from Chinese bulk-market production. Korean-sourced herbs typically carry stricter food-safety oversight, and Kosbee provides a full Nutrition Facts panel — something rarely available with bulk Chinese-origin herbs sold in North America.

Explore more authentic Korean tonic herbs at Explore More Korean Herbs at Kosbee.

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.