Jiaogulan
Jiaogulan is Gynostemma pentaphyllum, a climbing vine in the cucumber family grown mainly in southern China and Southeast Asia. The leaves and aerial parts are dried for tea, milled to powder, or extracted with water or ethanol and standardized to gypenosides (dammarane saponins), commonly measured by UV or HPLC. High-percentage extracts are the main supplement form.
Suppliers sell different products under the same name. Specify the one you need.
Whole or cut dried leaf and herb for infusion.
Milled dried herb, not standardized.
Water or ethanol extract standardized to total gypenosides, from about 20% up to 98%.
Leaf or extract from certified organic cultivation, with the certificate tied to the lot.
Compare each result with your own specification when the lot arrives.
Keep dried herb and powdered extracts sealed in lined drums or bags, away from heat, light and humidity. Dry extracts are hygroscopic and cake once exposed to air, so reseal opened containers promptly. Suppliers assign a shelf life or retest date, and the marker assay is usually repeated at retest before material is used past it.
Gypenoside content depends on growing region, plant part and extraction, so check the assay and method on each lot. Record the supplier lot, plant part, assay method and retest date.
Facts from regulators and standards bodies, each linked to its source.
Health Canada's Traditional Chinese Medicine Ingredients monograph lists Gynostemma pentaphyllum (Jiao gu lan) under the pharmacopoeial name Rhizoma seu Herba Gynostemmatis.
Source: webprod.hc-sc.gc.ca (opens in a new tab)The EU Novel Food status Catalogue entry for Gynostemma pentaphyllum (POL-NF-15343) concerns the leaves and records that an extract standardized to 80% gypenosides was considered novel food after a consultation request to the Czech authority.
Source: ec.europa.eu (opens in a new tab)This is general information, not regulatory advice. Status differs by country and by how the ingredient is used, so check the rules for your product and market.
Manufacturers and distributors whose own websites say they sell it.
Manufacturer · Changsha, China
Hunan Nutramax is a plant extract producer in Changsha, China, best known for monk fruit (luo han guo), stevia and sweet tea extracts, that also offers a range of herbal extracts.
Suppliers are in alphabetical order and none pays to appear. Each claim is checked against the supplier’s own website on the date shown. Ask for the specification sheet and a recent COA before you order, and confirm details with the supplier.
Common forms include dried leaf tea, leaf powder, standardized extract and organic. Ask each supplier for the specification sheet of the exact grade they quote.
Expect identity (HPTLC), gypenosides assay, residual solvents, heavy metals, microbiology and pesticide residues, each with its method, specification and result for that lot.
Keep dried herb and powdered extracts sealed in lined drums or bags, away from heat, light and humidity. Dry extracts are hygroscopic and cake once exposed to air, so reseal opened containers promptly. Suppliers assign a shelf life or retest date, and the marker assay is usually repeated at retest before material is used past it.
Health Canada's Traditional Chinese Medicine Ingredients monograph lists Gynostemma pentaphyllum (Jiao gu lan) under the pharmacopoeial name Rhizoma seu Herba Gynostemmatis. The EU Novel Food status Catalogue entry for Gynostemma pentaphyllum (POL-NF-15343) concerns the leaves and records that an extract standardized to 80% gypenosides was considered novel food after a consultation request to the Czech authority.
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