Description
Product Overview
Milk Thistle Extract (Silybum marianum) is a high-purity botanical extract standardized to 80% silymarin (silymarin complex by UV/HPLC), derived from the seeds of Silybum marianum (Asteraceae). Silymarin is one of the most clinically researched natural compounds for liver health, supporting hepatic detoxification, antioxidant defense and healthy liver enzyme levels. Our bulk milk thistle extract is GMP-produced, HPLC-verified and ideal for liver support capsules, tablets and functional foods.
Botanical Profile
- Botanical Name: Silybum marianum
- Part Used: Seed
- Standardization: Silymarin 80% (UV/HPLC)
- Source: GMP-certified extraction facility, Xi’an, China
Product Specifications & Quality Standard
| Parameter | Specification |
|---|---|
| Active Ingredient | Silymarin 80% (UV/HPLC) |
| Appearance | Pale yellow to light brown powder |
| Part Used | Seed |
| Mesh Size | 80 mesh (95% pass) |
| Loss on Drying | ≤ 5.0% |
| Heavy Metals | Pb ≤ 2ppm, As ≤ 2ppm, Cd ≤ 1ppm, Hg ≤ 0.1ppm |
| Microbiology | Total plate count ≤ 1000 CFU/g, E.coli/Salmonella negative |
| Solubility | Slightly soluble in water, soluble in ethanol |
| Storage | Cool dry place, 24 months shelf life |
Physical Characteristics
Appearance: Pale yellow to light brown powder (see specification table above). Fine free-flowing powder, 80 mesh, suitable for direct encapsulation and tableting.
Key Benefits
- Supports liver health and natural detoxification pathways
- Antioxidant protection for liver cells (hepatoprotective)
- Supports healthy liver enzyme levels (ALT/AST)
- Helps maintain bile flow and digestive function
- Supports healthy cholesterol levels already in normal range
- Clinically studied silymarin complex with 50+ years of research
Main Applications
Liver support capsules, tablets, softgels and powder blends; also used in functional foods and animal nutrition.
Recommended Usage
Typical dosage: 140-420 mg silymarin per day (equivalent to 175-525 mg of 80% extract). Follow label instructions of final formulation.
Why Choose Our Bulk Milk Thistle Extract
- GMP-certified production with ISO 9001 quality system
- HPLC/UV verified active content, batch-to-batch consistency
- Full COA, MSDS and third-party heavy metal testing per batch
- HALAL, KOSHER and organic certifications available
- Flexible MOQ with global export experience to 50+ countries
- OEM/ODM support: capsules, tablets, powder sachets and custom blends
Packaging & Storage
- Packaging: 25kg/drum, double PE bags inside, aluminum foil vacuum bag optional
- Storage: Store in cool, dry, well-ventilated place away from direct sunlight
- Shelf Life: 24 months under proper storage
FAQ About Wholesale Milk Thistle Extract
Q: What is silymarin content?
80% silymarin complex, assayed by UV spectroscopy, with silybin as the major flavanolignan.
Q: What part is used?
Seeds of Silybum marianum.
Q: Is it suitable for capsules?
Yes, fine powder (80 mesh) fills capsules and compresses into tablets well.
Q: Do you provide COA?
Yes, each batch includes COA with assay, heavy metals and microbial tests.
Q: Can it be used in liquid products?
It is slightly soluble in water; for liquid applications we can recommend special grades.
Q: What is your production capacity?
Monthly capacity 50+ tons across our extraction lines.
Inquiry & Cooperation
As a professional botanical extract manufacturer with 20 years of export experience, we supply high-quality Milk Thistle Extract at competitive bulk prices. Contact our sales team for spec sheets, COA samples and quotations.


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