Hedysarum polybotrys (Hedysarum polybotrys): Benefits, Dosage, Safety & Evidence

Frequently asked questions

How does Hedysarum polybotrys work to support the immune system?

Hedysarum polybotrys contains bioactive compounds including polysaccharides, flavonoids, saponins, and alkaloids that contribute to its immunomodulatory effects. The polysaccharides appear to be the primary active constituents, potentially enhancing immune cell activity and modulating inflammatory responses. These compounds work synergistically to strengthen the body's natural defense mechanisms. In traditional Chinese medicine, this mechanism is described as tonifying Qi and strengthening the spleen and lung. Evidence level: C, based primarily on preclinical research.

Is Hedysarum polybotrys safe to take during pregnancy?

No, Hedysarum polybotrys is contraindicated during pregnancy and should be avoided. The herb's immunomodulatory properties and potential effects on uterine tissue make it inappropriate for use by pregnant individuals. Women who are pregnant, planning to become pregnant, or breastfeeding should not use this herb. Always consult a qualified healthcare provider before using any herbal supplements during pregnancy or while nursing.

What is the recommended dosage for Hedysarum polybotrys?

The traditional adult dosage for Hedysarum polybotrys is 9-30 grams of dried root prepared as a tea or decoction, taken twice daily. Lower doses within this range are typically used for general tonic purposes, while higher doses may be appropriate for more pronounced deficiency patterns. This herb is traditionally prepared as a water decoction. Always consult a qualified TCM practitioner for personalized dosing recommendations based on your individual constitution and health status.

Does Hedysarum polybotrys interact with any medications?

Hedysarum polybotrys may interact with immunosuppressive medications due to its immune-stimulating properties. The herb could potentially reduce the effectiveness of drugs prescribed for autoimmune conditions or following organ transplantation. Individuals taking corticosteroids, cyclosporine, or other immunosuppressive drugs should avoid this herb. Additionally, because this herb affects immune function, consult your healthcare provider before combining it with any prescription medications, particularly those affecting the immune system.

What are the side effects of Hedysarum polybotrys?

The most commonly reported side effects of Hedysarum polybotrys are gastrointestinal in nature, including nausea, bloating, and digestive discomfort. These effects are typically mild and may resolve with continued use or dose adjustment. The herb is contraindicated for individuals with autoimmune conditions, as its immune-stimulating properties could potentially worsen these disorders. Discontinue use if you experience persistent or severe symptoms and consult a healthcare provider.

What is Hedysarum polybotrys used for in traditional Chinese medicine?

Hedysarum polybotrys is used in traditional Chinese medicine as a regional alternative to Huang Qi (Astragalus membranaceus), particularly in northwest China. It is primarily indicated for immune deficiency, chronic fatigue, spleen weakness, and lung Qi deficiency patterns. The herb functions as a tonic to strengthen vital energy and support overall immune function. Practitioners often prescribe it for patients recovering from illness, experiencing persistent fatigue, or showing signs of constitutional weakness. Evidence level: C, based primarily on traditional use and preliminary research.

PubMed-compiled information sheet

This sheet was compiled from PubMed (NIH) abstracts using AI assistance. Every factual claim is cited to a real PubMed article (see the source list). It has not yet been human-reviewed — confirm with a healthcare provider before use.

Compiled from 30 PubMed articles · model: gemma4:31b

Summary

Hedysarum polybotrys is a leguminous medicinal plant used in traditional Chinese medicine for its tonic and immune-modulating effects [PMID:41523595, PMID:41903590].

Background

Hedysarum polybotrys (also known as Hongqi) is a member of the Leguminosae (Fabaceae) family native to the arid regions of Northwest China [PMID:41523595, PMID:34712819]. It is often used as a substitute or legal equivalent for Astragalus membranaceus var. mongholicus in traditional medicine [PMID:27169287, PMID:24300120].

Traditional uses

It is recognized as a prized Qi-tonifying herb in Traditional Chinese Medicine (TCM), historically used to increase the body's energy, enhance resistance, and modulate immune function [PMID:41903590, PMID:23866043, PMID:41523595].

Active compounds

The plant contains polysaccharides (HPS), including sulfated glucans and heteropolysaccharides [PMID:34662946, PMID:24625202, PMID:25037407]. Other isolated compounds include formononetin, polybotrin, saponins, flavonoids, coumestans (3-hydroxy-9-methoxycoumestan, 3,9-dihydroxycoumestan), and sterols (beta-sitosterol) [PMID:17701565, PMID:17001751, PMID:12776590, PMID:24300120, PMID:22121801].

Mechanism of action

Hedysarum polybotrys polysaccharide (HPS) may inhibit the HMGB1/RAGE/TLR4 pathway to attenuate renal inflammation [PMID:37771649]. It has demonstrated the ability to enhance antioxidative capacity [PMID:37105250], inhibit the production of NO, PGE2, iNOS, and COX-2 in macrophages [PMID:24300120], and potentially activate NK cell immunity via PI3K/AKT and PD-1/PD-L1 axes [PMID:41903590].

Clinical evidence

Evidence DDiabetic Kidney Disease (DKD)

HPS (30-60 mg/kg) attenuated renal inflammatory infiltration and fibrosis in db/db mice [PMID:37771649]

Evidence DAging and Age-related diseases

HPS prolonged lifespan and ameliorated intestinal homeostasis, sleep disturbances, and beta-amyloid induced Alzheimer's symptoms in Drosophila melanogaster [PMID:37105250]

Evidence DDiabetes

Purified HPS3 showed significant hypoglycemic effects in alloxan-induced diabetic mice, increasing plasma insulin and hepatic glycogen [PMID:20130740]

Evidence DEndotoxin-induced uveitis (EIU)

HPS (400 mg/kg) demonstrated anti-inflammatory effects in a rat model [PMID:41572999]

Evidence DOsteoblast Differentiation

Purified HPS3d upregulated alkaline phosphatase activity and expression of Runx-2 and Osterix in osteoblasts [PMID:25037407]

Evidence DProstate Cancer

Aqueous extract enhances NK cell-mediated cytotoxicity against prostate cancer cells [PMID:41903590]

Evidence summary

The current evidence is based on preclinical studies (animal models, in vitro cell cultures, and insect models) and phytochemical analyses; there are no human clinical trials provided.

PubMed sources

1.PMID: 41523595 (2025) — Study on the structure of root nodules of Hedysarum polybotrys Hand.-Mazz. and the isolation and identification of rhizobia. · Plant biotechnology (Tokyo, Japan)
2.PMID: 37771649 (2023) — Hedysarum polybotrys polysaccharide attenuates renal inflammatory infiltration and fibrosis in diabetic mice by inhibiting the HMGB1/RAGE/TLR4 pathway. · Experimental and therapeutic medicine
3.PMID: 34712819 (2021) — Characterization of the complete chloroplast genome of Hedysarum polybotrys var. alaschanicum (Fabaceae) and its phylogeny. · Mitochondrial DNA. Part B, Resources
4.PMID: 37105250 (2023) — The antioxidant effects of hedysarum polybotrys polysaccharide in extending lifespan and ameliorating aging-related diseases in Drosophila melanogaster. · International journal of biological macromolecules
5.PMID: 17701565 (2007)

Hedysarum polybotrys

Sources & Citations

Calculate a safe dose of Hedysarum polybotrys