Rehmannia glutinosa, commonly known as Chinese foxglove or Shu Di Huang in traditional Chinese medicine, is a widely used botanical ingredient in the nutraceutical, pharmaceutical, and functional food industries. As demand for natural herbal ingredients continues to grow globally, one of the most common questions from buyers is: How much does rehmannia glutinosa extract cost? The answer depends on several key factors that this article will explore in detail.
Typical Price Ranges for Rehmannia Glutinosa Extract
Based on current market data from major B2B platforms and supplier catalogs, rehmannia glutinosa extract prices typically fall within the following ranges, depending on specification and order quantity:
| Specification | Price Range (USD/kg) | Typical MOQ |
|---|---|---|
| Standard 5:1 / 10:1 ratio extract | $5 – $20 | 1 – 25 kg |
| 20:1 concentrated extract | $12 – $30 | 1 – 25 kg |
| High-purity polysaccharide extract | $20 – $45 | 1 – 5 kg |
| Catalpol-standardized extract (e.g., 10% catalpol) | $27 – $50 | 1 kg |
| Organic certified / premium grade | $30 – $90 | 1 – 5 kg |
These prices are indicative wholesale ranges from manufacturer-direct sourcing. Retail or end-consumer supplement prices are significantly higher — for example, a 500-gram container of rehmannia root extract sold as a dietary supplement can cost around $24 at retail, which translates to approximately $48/kg at the consumer level.
Key Factors That Influence the Cost
1. Extraction Ratio and Concentration
The extraction ratio is one of the most significant cost drivers. A standard 5:1 or 10:1 extract — meaning 5 or 10 kilograms of raw herb yield 1 kilogram of extract powder — is generally the most economical option. Higher ratios such as 20:1 or 50:1 require more raw material and processing time, pushing prices upward. Buyers seeking a standard rehmanniae powder extract for general formulations will find 10:1 to be the most cost-effective choice.
2. Active Compound Standardization
Extracts standardized to specific active compounds command higher prices. For rehmannia glutinosa, the key bioactive constituents include catalpol (an iridoid glycoside), rehmanniosides, and polysaccharides. A catalpol-standardized extract (e.g., 10% catalpol by HPLC) requires advanced analytical testing and tighter process control, which increases production costs. Non-standardized ratio extracts are more affordable but offer less consistency in active compound content.
3. Purity and Quality Grade
The purity grade of the extract directly affects pricing. Pharmaceutical-grade extracts undergo rigorous quality control including HPLC, UV, and microbiological testing, and are priced at the higher end of the spectrum. Food-grade and cosmetic-grade extracts are generally more affordable. Additionally, extracts that are free from additives, preservatives, and synthetic substances tend to be priced higher due to the cleaner production process.
4. Organic Certification
USDA Organic and EU Organic certified rehmannia root extract powder can cost 30% to 100% more than conventional extracts. The organic certification process requires compliance with strict farming and processing standards, which increases operational costs throughout the supply chain. For brands targeting the premium natural products market, organic certification is often worth the investment.
5. Order Volume and Bulk Pricing
Like most bulk ingredients, rehmannia glutinosa extract benefits from significant economies of scale. A 1-kilogram trial order might cost $15–$30/kg, while a 100-kilogram bulk order from the same supplier could ｄｒｏｐ to $8–$15/kg. Many manufacturers offer tiered pricing structures, and long-term supply agreements can further reduce per-unit costs. Buyers should also consider that larger orders often qualify for more economical shipping methods such as sea freight rather than air courier.
6. Supplier Location and Logistics
The majority of rehmannia glutinosa extract is produced in China, where the raw herb is cultivated extensively in provinces such as Henan and Shanxi. Sourcing directly from Chinese manufacturers generally yields the lowest ex-factory prices. However, international buyers must factor in shipping costs, import duties, customs clearance, and delivery timelines. Suppliers with warehousing in North America or Europe can offer faster delivery and simpler logistics, though at a somewhat higher unit price.
7. Testing and Documentation
Comprehensive third-party testing adds to the cost but is essential for quality assurance. A full Certificate of Analysis (COA) covering heavy metals, pesticides, microbiological screening, and active compound quantification provides confidence in the product. Suppliers that offer GMP-certified manufacturing, ISO 9001 compliance, and detailed documentation typically charge a premium that reflects their investment in quality systems.
What to Look for When Comparing Suppliers
When evaluating rehmannia glutinosa extract suppliers, price should not be the only consideration. Here are essential factors to assess:
- Certifications: Look for GMP, ISO 9001, FSSC 22000, and organic certifications where applicable. These indicate a commitment to quality management and regulatory compliance.
- Testing capabilities: Reputable suppliers should provide HPLC, UV, and microbiological testing results. Ask for a recent COA and verify that testing methods match your requirements.
- Traceability: A supplier should be able to trace each batch back to its botanical origin, including the cultivation region, harvest season, and processing date.
- Minimum order quantity (MOQ): Some suppliers require MOQs of 25 kg or more, while others accommodate smaller orders. Choose a supplier whose MOQ aligns with your procurement needs.
- Sample availability: Before committing to a bulk order, request a sample for in-house evaluation. Most reliable suppliers offer free or low-cost samples for testing purposes.
- Lead time and logistics: Confirm typical production lead times (usually 3–10 working days) and shipping options. Suppliers with established logistics partnerships can streamline the import process.
Why Source from an Established Botanical Extracts Supplier
Working with an experienced supplier like Cactus Botanics offers distinct advantages. With manufacturing facilities in the United States and China, a product portfolio of over 200 botanical extracts, and certifications including cGMP, FSSC 22000, ISO 9001, USDA Organic, and EU Organic, Cactus Botanics provides comprehensive quality assurance at every stage — from raw material sourcing through final packaging. The company's rehmanniae powder extract is produced under strict quality control with full batch traceability, HPLC testing, and microbiological screening. Combined with global logistics capabilities serving clients in over 190 countries, Cactus Botanics delivers both quality and reliability for buyers seeking rehmannia glutinosa extract at competitive prices.
Conclusion
The cost of rehmannia glutinosa extract typically ranges from $5 to $90 per kilogram depending on specification, purity, certifications, and order volume. For most buyers, a standard 10:1 extract in bulk quantities from a reputable supplier offers the best balance of quality and affordability. By understanding the key factors that influence pricing — extraction ratio, standardization, certifications, and order size — procurement professionals can make informed sourcing decisions that meet both their quality requirements and budget constraints.
