Overview
Processed Rehmannia Root (Shu Di Huang) is a fundamental herb in Traditional Chinese Medicine, created through extensive processing of raw Rehmannia glutinosa roots. The traditional preparation involves nine cycles of steaming and sun-drying, which transforms the herb's properties from cooling to warming. This processed form has been used for over 2,000 years in Chinese herbal formulas, particularly those targeting blood deficiency and kidney yang deficiency patterns. In contemporary TCM practice, Shu Di Huang remains one of the 'Four Major Tonics' and is frequently prescribed in combinations with other herbs like Angelica sinensis (Dang Gui) and Lycium fruit (Gou Qi Zi). Its importance in Chinese herbalism is reflected in its inclusion in classical formulas such as Liu Wei Di Huang Wan (Six-Ingredient Pill with Rehmannia) and Si Wu Tang (Four-Substance Decoction).
Physical and Chemical Properties
Processed Rehmannia Root exhibits distinct physical characteristics resulting from its unique preparation method. The herb appears as dark brown to black, moist-looking slices with a slightly sticky texture and sweet aroma. These visual qualities are important markers of proper processing - underprocessed material may appear lighter in color while overprocessed pieces become excessively black and hard. Chemically, Shu Di Huang contains multiple active components including iridoid glycosides (particularly catalpol), polysaccharides, amino acids, and trace minerals. The steaming process increases the bioavailability of certain compounds while reducing potentially irritating components found in the raw root. Recent studies indicate the processing enhances the content of 5-HMF (5-hydroxymethylfurfural), which may contribute to the herb's warming properties and hematinic effects.
Main Applications
In clinical TCM practice, Processed Rehmannia Root serves three primary therapeutic functions: blood tonification, kidney essence nourishment, and yin supplementation. It's particularly valued for treating anemia-like symptoms (pale complexion, dizziness, irregular menstruation) attributed to blood deficiency in TCM diagnosis. Modern applications also include adjunctive therapy for menopausal symptoms and certain autoimmune conditions. The herb demonstrates notable versatility in formulation. Practitioners combine it with Angelica sinensis for blood-building, with Cornus officinalis for kidney support, or with Cinnamon bark for warming applications. Contemporary research suggests potential benefits for osteoporosis management, with studies showing Shu Di Huang extracts may help maintain bone mineral density through regulation of osteoclast activity.
Safety and Storage
Proper storage of Processed Rehmannia Root is essential to maintain its medicinal quality. The herb should be kept in airtight containers with desiccant packs to prevent moisture absorption, which can lead to mold growth. Optimal storage temperature ranges between 15-25°C (59-77°F) with relative humidity below 60%. While generally safe, Shu Di Huang requires cautious use in certain conditions. Its moistening properties may exacerbate symptoms in patients with digestive dampness (loose stools, abdominal fullness) or phlegm disorders. Typical dosage ranges from 6-30g per day in decoction, with lower doses used in combination formulas. Processing quality directly impacts safety - improperly prepared material may contain residual toxins from fumigation or show inadequate transformation of raw root components.
B2B Procurement Guide
For B2B buyers in the herbal medicine industry, several critical factors determine Shu Di Huang quality. Authentic material should originate from Henan province's Wenxian county, recognized for producing premium Rehmannia. Suppliers must provide documentation verifying the traditional nine-cycle processing method, as abbreviated processing affects therapeutic properties. Laboratory testing should confirm absence of heavy metals, pesticide residues, and sulfur dioxide (a common but undesirable bleaching agent). Price varies significantly based on processing standards - premium grades showing uniform black coloration with reddish undertones command 20-30% higher prices than irregular lots. Bulk purchasers should establish relationships with GMP-certified processors who can provide batch-to-batch consistency and complete traceability documentation.
Related Manufacturers
- 主营：乳酸链球菌素、甜菜碱、富铬酵母、熟地黄提取物厂家、富硒酵母、富锌酵母、肉桂酸钾、茶多酚、植酸钠、富马酸、单宁酸、甘露寡糖、低聚半乳糖、魔芋粉、结冷胶、卡拉胶、海藻酸钠、果胶、黄原胶、酪蛋白酸钠、低聚果糖、低聚木糖、水苏糖、三氯蔗糖、维生素B1、肉桂酸
- 主营：甘氨酸、儿茶黑、水苏糖、熟地黄提取物含量99、红曲黄、可可壳、脆皮素、维纶胶、五香粉、硫酸锰、相苷酶、肌氨酸、除腥剂、烟酰胺、牛磺酸、褪黑素、碳酸镁、温轮胶、脯氨酸、叶绿素、冰乙酸、酸性红、淀粉钠、脂肪酶、大蒜粉、右旋糖
- 主营：植物提取物、浸膏粉、果粉、熟地黄提取物、蔬菜粉、化妆品类提取物、饲料类提取物原料、食品饮料原料、固体饮料原料、植物原料、提取物加工、果蔬粉厂家、水溶粉、提取物定制、菌类提取物、植物浓缩粉、浓缩粉厂家、浓缩粉原料、果蔬粉定制、植物加工品、浓缩粉、果汁粉、水溶植物原料、藤茶提取物/藤茶粉
- 主营：苦参碱母液、黑米花青素、白芍提取物芍药苷、1熟地黄提取物、苦参提取物、枸杞提取物、侧柏叶提取物
- 主营：辣木叶提取物、人参粉、桑葚粉、熟地黄、陈皮提取物、藜麦肽、蓝莓粉、白芸豆提取物、甘草粉、枸杞提取物、沙棘粉、牡蛎肽、当归提取物、雪莲培养物、苹果粉、柑橘膳食纤维、淫羊藿提取物、肉苁蓉提取物、覆盆子粉、山药提取物、便秘果提取物、可水溶萃取粉、半边苏浓缩粉、半边苏提取物、甜石莲水提浸膏粉、淫羊藿双甙10%
- 主营：枸杞多糖、葛根提取物、猴头菇提取物、熟地黄、黑枸杞提取物、芒果粉、苹果粉、桑椹粉、火龙果粉、板蓝根提取物、酸枣仁肽、燕麦肽、丁香提取物、金银花提取物、百合提取物、茯苓提取物、赤小豆提取物、桑叶提取物、荷叶提取物、砂仁提取物、蔓越莓提取物、白桦茸提取物、樱桃粉
- 主营：化学品、香精香料、试剂、熟地黄多糖30、中间体、有机硅、橡胶树脂、催化剂、纳米材料
- 主营：丙氨酸、蛋氨酸、半胱氨酸、熟地黄提取物厂家、苯丙氨酸、茶氨酸、谷氨酸、瓜氨酸、胱氨酸、精氨酸、赖氨酸、酪氨酸、亮氨酸、脯氨酸、色氨酸、苏氨酸、谷氨酰胺、胍基乙酸、天冬酰胺、缬氨酸、异亮氨酸、组氨酸、聚谷氨酸、支链氨基酸、聚丙烯酸钠、黄原胶
- 主营：复合维生素、阿拉伯胶、刺槐豆胶、熟地黄提取物厂家、瓜尔豆胶 瓜尔胶、果胶、海藻酸钠、黄原胶、结冷胶 低酰基结冷胶、聚丙烯酸钠、卡波姆、卡拉胶、可得然胶、魔芋粉、琼脂 琼脂粉、羧甲基纤维素钠、明胶、温轮胶 威兰胶、聚维酮K30、乙基纤维素、D-氨基葡萄糖盐酸盐、壳聚糖、壳寡糖、酪蛋白 干酪素
- 主营：木糖醇、麦芽糖醇、赤藓糖醇、熟地黄提取物厂家、低聚果糖、低聚木糖、水苏糖、乳糖、菊粉、阿拉伯糖、核糖、甘露糖醇、纽甜、三氯蔗糖、瓜尔胶、黄原胶、海藻酸钠、酪蛋白酸钠、琼脂粉、魔芋粉、聚丙烯酸钠、魔芋胶、结冷胶、卡拉胶、羧甲基纤维素钠、植酸钠
- 主营：熟地黄、营养强化剂
- 主营：卡波姆、卡拉胶、可得然胶、熟地黄提取物厂家、魔芋粉 魔芋精粉、琼脂 琼脂粉、羧甲基纤维素钠、明胶、聚维酮K30、乙基纤维素、D-氨基葡萄糖盐酸盐、壳聚糖、壳寡糖、酪蛋白 干酪素、酪蛋白酸钠 酪朊酸钠、氯化胆碱、甜菜碱、酵母浸粉、蛋白胨、低聚果糖、低聚木糖、甘露寡糖、菊粉、D-异抗坏血酸钠
- 主营：烟酰胺、泛酸钙、生物素、熟地黄提取物厂家、黄原胶、瓜尔胶、L-半胱氨酸盐酸盐、海藻酸钠、海藻糖、谷氨酸、卡拉胶、乳清粉、赤藓糖醇、结晶果糖、木糖醇、甜菜碱、螺旋藻、乳清蛋白粉、氯化胆碱、酪蛋白、肌酸、色氨酸、赖氨酸、鱼油粉、刺槐豆胶、阿拉伯胶
- 主营：L-半胱氨酸、L-苯丙氨酸、L-谷氨酸、熟地黄提取物厂家、L-蛋氨酸、L-谷氨酰胺、L-瓜氨酸、L-精氨酸、L-赖氨酸、L-酪氨酸、L-亮氨酸、L-色氨酸、L-天门冬氨酸、维生素A、维生素B1、维生素B12、维生素B2、维生素B5、维生素B6、维生素D3、维生素E、复合维生素、阿拉伯胶
- 主营：氯化胆碱、酵母β葡聚糖、乳清蛋白粉、熟地黄提取物厂家、甜菜碱、甜菜碱盐酸盐、维生素A、维生素B1、维生素B2核黄素、维生素B6、维生素D3、维生素E、烟酰胺、鱼油粉、DHA、左旋肉碱酒石酸盐、大豆肽、谷胱甘肽、牛骨胶原蛋白肽、鱼胶原蛋白肽、赤藓糖醇、低聚半乳糖、低聚果糖、低聚木糖、海藻糖、菊粉