Wholesome in bulk™ Stinging Nettle Root Extract & Leaf Powder
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Bulk Stinging Nettle Root Extract and Leaf Powder for Supplement Manufacturing
Nettle root extract is a dry powder made from the root and rhizome of stinging nettle, Urtica dioica L. Nettle leaf powder is the dried, milled leaf of the same plant. The two materials differ in color, marker compounds, and specification, so every order names the plant part. We supply both in bulk to supplement brands, contract manufacturers, and formulators, with lot documents for your quality team.
One plant, two distinct bulk materials
Stinging nettle gives the trade two separate raw materials. Root extract is specified by beta-sitosterol, scopoletin, and amino acid content. Leaf powder is specified by phenolic acids, color, and mesh. Choose the plant part first and the rest of the spec follows.
Plant part sets the spec
Root and rhizome extracts are measured for beta-sitosterol, scopoletin, and total amino acids. Leaf powders are measured for caffeoylmalic and chlorogenic acids. A spec sheet should name one plant part, never just nettle.
Published reference standards
The USP monographs titled Stinging Nettle cover the root and rhizome. The European Pharmacopoeia nettle leaf monograph sets a minimum of 0.3% caffeoylmalic and chlorogenic acids combined. Both give your quality team a published benchmark.
A defined extract ratio
The USP monograph for powdered stinging nettle extract describes a 10:1 ratio of plant material to extract. It names 60% alcohol or another suitable solvent. The label must state the plant part, solvent, and ratio.
Two species in the trade
Small nettle, Urtica urens L., grows alongside Urtica dioica. The USP root monograph allows it as a minor component, and European leaf references accept either species. Your spec should say which species the lot contains.
Green leaf, brown root
Leaf powder is green to brownish green with a vegetal odor. Root extract is a brown powder. The color difference gives receiving staff a quick first check before lab results come back.
Fine, even mesh
Supplier sheets for both materials commonly call for powder that passes an 80 mesh screen. That suits capsule filling, tableting, and dry blending.
Where formulators use nettle root extract and leaf powder
Both materials fit measured formats where fill weight is controlled, including:
- Capsules
- Compressed tablets
- Single ingredient powders
- Multiple ingredient botanical blends
- Loose tea and tea bag blends (leaf)
- Green powder blends (leaf)
- Stick packs and sachets
- Private label programs
Root extract and leaf powder are not interchangeable gram for gram. Write the plant part and form into your formula sheet, and plan fill weights from the confirmed values on each COA.
What to check before you buy nettle root extract or leaf powder
Two powders sold as nettle can differ in plant part, species, solvent, and assay method. Review these points together, and ask for lot documents before you approve a supplier.
Plant part on every document
Confirm root and rhizome, or leaf, on both the specification and the certificate of analysis (COA). Product names in the market are not always specific, so the documents are the record to rely on.
Species
Confirm Urtica dioica L. as the source. If the lot contains small nettle, Urtica urens L., the specification should say so.
Identity by TLC or HPTLC
A thin layer chromatography fingerprint compared with a reference standard confirms species and plant part. For root, USP compares zones for beta-sitosterol, its glucoside, and scopoletin.
Marker, method, and basis
Beta-sitosterol occurs in many plants, so an assay alone does not confirm identity. Ask whether it is measured by GC, as in USP, or by HPLC, and whether results are on a dry basis.
Solvent, ratio, and carrier
For extracts, confirm the solvent, such as water, ethanol, or both, and the ratio. Ask whether any carrier, such as maltodextrin, is added to the finished powder.
Contaminant limits
Check heavy metals by ICP-MS, microbial limits by USP methods, pesticide residues, and residual solvents for extracts. Compare each limit with your own finished product specification.
Root or leaf: Write the plant part into your purchase order, your formula, and your label. The USP nettle monographs require the label to state the Latin binomial and the plant part, so your supplier documents should match.
Typical specification for nettle root extract and leaf powder
Root values follow the USP nettle monographs and common supplier grades. Leaf values follow published supplier sheets and the European leaf marker. Final figures come from the specification sheet and COA for your lot. NLT means not less than, and NMT means not more than.
| Parameter | Specification | Method |
|---|---|---|
| Botanical source | Urtica dioica L., root and rhizome or leaf, as stated per lot | TLC or HPTLC fingerprint |
| Form | Provided with quote | Supplier declaration |
| Appearance | Provided with quote | Visual |
| Beta-sitosterol (root extract) | Provided with quote | GC or HPLC |
| Scopoletin (root extract) | Provided with quote | HPLC with fluorescence detection |
| Total amino acids (root extract) | Provided with quote | Ninhydrin, visible spectrophotometry |
| Caffeoylmalic and chlorogenic acids (leaf) | Provided with quote | HPLC |
| Extraction solvent and ratio | Provided with quote | Supplier declaration |
| Carrier | Provided with quote | Supplier declaration |
| Particle size | Provided with quote | USP <786> |
| Loss on drying | Provided with quote | USP <731> |
| Lead | Provided with quote | ICP-MS |
| Arsenic | Provided with quote | ICP-MS |
| Cadmium | Provided with quote | ICP-MS |
| Mercury | Provided with quote | ICP-MS |
| Total aerobic count | Provided with quote | USP <2021> |
| Yeast and mold | Provided with quote | USP <2021> |
| E. coli and Salmonella | Provided with quote | USP <2022> |
| Pesticide residues | Provided with quote | GC-MS and LC-MS |
| Shelf life | Provided with quote | Stability data |
Storage and handling for bulk nettle powders
Root extract and leaf powder both hold their quality longest when they stay sealed, dry, and out of light. These steps keep the powder in good condition between production runs.
Keep it sealed
Close the inner liner after each use and press out the air. Extract powders pick up moisture from the air and can cake when left open.
Store cool and dry
Keep bags off the floor in a dry room, away from heat sources. Follow the temperature range on the spec sheet.
Keep away from light
Leave the powder in its original opaque packaging. Light and heat can dull the green color of leaf powder and shift assay values over time.
Label by plant part
Root and leaf powders can sit side by side in a warehouse. Mark each bag with plant part, lot number, and retest date, and send older lots to production first.
Nettle root and leaf buyer FAQ
Quick answers to the questions procurement and quality teams ask most.
What is the difference between nettle root and nettle leaf?
They are different parts of the same plant, Urtica dioica, sold as different materials. Root extract is a brown powder specified by beta-sitosterol, scopoletin, and amino acids. Leaf powder is a green powder specified by phenolic acids, color, and mesh.
What is nettle root extract standardized to?
Most bulk nettle root extracts are sold by ratio, often 10:1, or standardized to beta-sitosterol, with 0.8% a common supplier grade. The USP extract monograph also sets minimums for scopoletin and total amino acids. Ask which marker and method your COA reports.
Is nettle root extract the same as nettle root powder?
No. Root powder is dried, milled root. Extract is made by soaking the root in a solvent and drying the liquid into a concentrated powder, often at a 10:1 ratio. Extract is the usual choice when a label needs a stated ratio or marker.
How do you confirm nettle identity?
A TLC or HPTLC fingerprint compared with a reference standard confirms the species and plant part. For root, USP compares zones for beta-sitosterol and scopoletin. Because beta-sitosterol occurs in many plants, an assay result alone is not an identity test.
Is Urtica urens the same as stinging nettle?
No. Urtica urens is small nettle, a related species. The USP root monograph allows it as a minor component, and European leaf references accept either species. Your specification should say which species the lot contains.
What documents can I get with an order?
Select testing documents on the quote form and we will send what is available for the lot.
Can I get a sample before a bulk order?
Yes. Choose sample options on the quote form and we will confirm size and timing.
How should I store an opened bag?
Close the liner, press out the air, and keep the bag in a cool, dry place away from light. Use the powder within the shelf life shown on the COA.
Request a quote for bulk nettle root extract or leaf powder
Tell us the plant part, form, quantity, and timing. We will reply with current pricing, lot documents, and sample options for your project.
Order Nettle Root or LeafBulk orders: Choose a pack size above, or request a quote for larger volumes, samples, and lot documents. Name root extract or leaf powder in your request. We serve supplement brands, contract manufacturers, product developers, and formulators.
This bulk ingredient is sold for further manufacturing and formulation. The information on this page describes the ingredient and how commercial buyers evaluate it. It is not medical advice. Each finished product brand is responsible for its own labeling and product claims.
