Are your herbs lab tested?

Yes. All herbs and formulas we carry are lab tested for identity, heavy metals, and microbial safety before being offered for sale.

Do you offer practitioner or wholesale pricing?

Yes. Herbalists, acupuncturists, and other qualified practitioners may qualify for wholesale or bulk pricing. Contact us or visit our wholesale information page for details.

Are your herbs sulfur-free?

Yes. Our herbs are sulfur-free unless clearly noted otherwise. We prioritize clean processing and traditional preparation methods.

Where do you ship from?

All orders are processed and shipped from our facility in Washington State, USA. We offer domestic shipping and select international options.

Do you provide Certificates of Analysis (COAs)?

Yes. Certificates of Analysis (COAs) are available upon request for many of our herbs and formulas. Please contact us if you need documentation for a specific product batch.

Drynaria Rhizome

Review Drynaria Rhizome Forms and Sizes Below

Common Name: Male Fern, Drynaria Rhizome, Dryopteris, Japanese Flowering Fern Rhizome, Male Fern Rhizome, Shield Fern
Botanical Name: Dryopteris crassirhizoma rhizome, Drynaria frotunei
Chinese / Pin Yin Name: Guan Zhong, Gu Si Bu
Drynaria Rhizome Dosage: Consult your healthcare provider for your correct dose.
Drynaria Rhizome Precautions: Do not use if pregnant or nursing.

Drynaria Rhizome Benefits Information

Drynaria Rhizome is a tradtional Chinese medicinal herb to clear heat, cool the blood, remove toxicity and tonify the yang.  Drynaria Rhizome supports bone health and benefits hair.
Product Properties:  Bitter, Slightly Cold, Slightly Toxic
Channels/Meridians: Liver, Spleen, Stomach
Naturally Occurring Chemical Components:   demethoxymatteucinol, matteucinol, pinosylvin 3-O-β-D-glucopyranoside

References
http://alternativehealing.org/guan_zhong.htm, http://alternativehealing.org/gu_sui_bu.htm

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ActiveHerb

Gu Sui Bu Drynaria Rhizome Extract Granule 100g ActiveHerb

Herbal Information on Drynaria Rhizome in Single Herb 10X Extract Common Name: Drynaria RhizomeBotanical Name: Drynaria Fortunei Rhizoma Channels/Meridians: Kidney, LiverPin Yin Name: Gu Sui BuOther Names: Rhizoma Drynaria…

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NuHerbs Lab Tested

Guan Zhong Dryopteris Shield Fern Root Cut 1 lb Nuherbs

Herbal Information for Guan Zhong in Sliced Root Form Common Name: Shield-fern root Botanical Name: Dryopteris crassirhizoma rhizoma Channels/Meridians: Liver, Spleen Pin Yin Name: Guan Zhong, Lab Tested Other Names: Male Fern Root, Dryopte…

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NuHerbs Lab Tested

Drynaria Rhizome (Gu Sui Bu) Nuherbs Lab Tested cut 1lb

Gu Sui Bu (Drynaria Rhizome) – A Comprehensive Guide in Traditional Chinese Medicine "Mender Of Shattered Bones" Gu Sui Bu (Drynaria Rhizome), also known as Rhizoma Drynariae, is a well-known herb in Traditional Chinese Medicine (TCM). It has b…

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Plum Flower

Guan Zhong Dryopteris / Male Fern Rhizome cut 1lb

Herbal Information for Guan Zhong in Sliced Root Form Common Name: Male Fern Botanical Name: Dryopteris crassirhizoma rhizoma Channels/Meridians: Liver, spleen Pin Yin Name: Guan Zhong, unsulfured Other Ingredients: None, nothing has been added …

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Plum Flower

Drynaria Rhizome (Gu Sui Bu) - Cut Form 1 lb - Plum Flower Brand

Herbal Information for Male Fern in Cut Form Common Name: Male Fern, "The Bone Mender" Botanical Name: Drynaria fortunei rhizome, Rhizoma Drynariae Pin Yin Name: Gu Sui Bu Other Ingredients: None, nothing has been a…

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Plum Flower

Drynaria Rhizome (Gu Sui Bu) - Powder 1lb - Plum Flower Brand

Herbal Information on Drynaria Rhizome in Bulk Powder Form Common Name: Male Fern, "The Bone Mender" Botanical Name: Drynaria fortunei rhizome, Rhizoma Drynariae Pin Yin Name: Gu Sui Bu Other Ingredients: None,…

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Plum Flower Concentrated Powder

Drynaria Rhizome Gu Sui Bu Extract Pwd 100gr Plum Flower

Herbal Information on Drynaria Rhizome in Extract Powder Form Common Name: Drynaria Rhizome Botanical Name: Drynaria Fortunei Rhizoma Channels/Meridians: Kidney, Liver Pin Yin Name: Gu Sui Bu Other Names: Rhizoma...

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