Omnia SanaPlant Comparison
Astragalus vs Corn Silk
A side-by-side comparison of two medicinal plants — every documented constituent, action, use, safety note and cited source, assembled automatically from the Omnia Sana database.
At a glance
Astragalus and Corn Silk: they share 6 indicated uses (arthritis / joint pain, cancer (anticancer research), infection (general), …); 3 pharmacological actions in common.
Evidence face-off — shared uses
| Condition | Astragalus | Corn Silk | Verdict |
|---|---|---|---|
| Arthritis / joint pain | 1/10 | 1/10 | Comparable evidence |
| Cancer (anticancer research) | 2/10 | 2/10 | Comparable evidence |
| Infection (general) | 2/10 | 1/10 | Comparable evidence |
| Inflammation (general) | 1/10 | 1/10 | Comparable evidence |
| Kidney support | 7/10 | n/a | Stronger for Astragalus |
| Skin irritation | 1/10 | 1/10 | Comparable evidence |
Evidence scores (1–10) are computed from the tier of each cited source. “Comparable” means the two scores are within one point. Follow a score to its detailed sources.
Key Constituents
Major bioactive saponin with cardio-, neuro-, hepato- and renoprotective effects.
Major antioxidant constituents of corn silk; maysin is the predominant flavonoid quantified in standardised extracts.
Contribute to antioxidant and anti-inflammatory activity.
Pharmacological Actions
Astragalus membranaceus and its constituents (astragaloside IV, cycloastragenol, Astragalus polysaccharide) inhibit tumour growth, invasion and metastasis and enhance antitumour immunity across lung, colorectal and gastrointestinal cancers (preclinical, incl. in vivo).
Immune support / immunomodulation (activates macrophages, NK cells, T and B lymphocytes)
Traditional & Indicated Uses
inferred from anti-inflammatory action
Astragalus membranaceus protects against gastrointestinal cancers; astragaloside IV inhibits lung cancer metastasis via macrophage repolarization, cycloastragenol boosts CD8+ T-cell antitumour immunity (with anti-PD-1 synergy), and Astragalus polysaccharide suppresses inflammation-induced colorectal cancer (preclinical).
Supports resistance to colds and respiratory infection (immune)
Adaptogenic tonic for fatigue and low vitality (traditional 'Qi' tonic)
Immune support / immunomodulation (activates macrophages, NK cells, T and B lymphocytes); Supports resistance to colds and respiratory infection (immune)
Supports resistance to colds and respiratory infection (immune)
inferred from anti-inflammatory action
Renoprotective (kidney support) - as an adjunct in chronic kidney disease, reduced proteinuria and raised haemoglobin and serum albumin across trials (Cochrane review; study quality low)
inferred from anti-inflammatory action
inferred from anti-inflammatory action
inferred from anticancer action
Soothing demulcent for urinary-tract irritation and mild urinary infections; supports kidney function
inferred from anti-inflammatory action
inferred from demulcent action
Diuretic - increases urine output to support the urinary tract and mild fluid retention/swelling; in conscious rats the aqueous extract is diuretic and kaliuretic and modifies glomerular filtration and potassium excretion
inferred from diuretic action
Diuretic - increases urine output to support the urinary tract and mild fluid retention/swelling; in conscious rats the aqueous extract is diuretic and kaliuretic and modifies glomerular filtration and potassium excretion; Soothing demulcent for urinary-tract irritation and mild urinary infections; supports kidney function
Safety, Cautions & Contraindications
Astragalus stimulates immune activity; on theoretical grounds it should be used cautiously in autoimmune disease and with immunosuppressant medicines (for example after organ transplant) - discuss with a clinician.
Generally well tolerated; high-quality long-term human safety and toxicity data remain limited.
Safety in pregnancy and breastfeeding has not been established; avoid medicinal doses.
As a diuretic it should be taken with plenty of fluids; use caution alongside prescription diuretics or medicines that affect potassium.
May lower blood sugar and blood pressure, so use caution with antidiabetic or antihypertensive medication; avoid concentrated medicinal doses in pregnancy - a high-dose standardised extract increased pre-implantation losses in pregnant rats (no fetal malformations were seen).
External Ids
Botanical Description
Erect perennial herb with a long, fibrous, pale yellow taproot. The leaves are pinnately compound with numerous small, oval leaflets, giving a soft, ferny appearance. Small, pale yellow, pea-like flowers are borne in loose axillary clusters (racemes), followed by membranous, inflated seed pods that give the species its name.[5]
Tall, robust annual grass with broad, strap-like leaves and a stout, jointed stem. Male flowers form a terminal tassel; female flowers develop on the ear (cob), each floret bearing a single long, silky style and stigma ('corn silk') that protrudes from the husk to catch pollen.[11]
Habitat
Native to the grasslands, sunny slopes and forest margins of northern and north-eastern China, Mongolia and parts of Korea; widely cultivated as a medicinal crop across East Asia.[5]
Cultivated worldwide as a major cereal food crop in warm-temperate to tropical climates on fertile, well-drained soils; not found wild, having been domesticated from a wild grass ancestor (teosinte) in Mesoamerica.[11]
Harvesting
The root is dug from plants at least four years old, typically in spring or autumn, then cleaned and dried, often sliced into the characteristic pale, fibrous 'coin' slices used in traditional decoctions.[5]
The silky stigmas and styles are collected from the ears in mid- to late summer, just before or as pollination occurs, while still fresh and pale, then dried quickly to preserve colour and flavonoid content.[11]
Traditional Uses
Corn silk has a long traditional use across Chinese, Native American and European folk medicine as a gentle diuretic and soothing demulcent for urinary tract complaints, mild fluid retention and kidney support.[11]
Preparations
Dried corn silk infused in hot water as a traditional diuretic and urinary-support tea.
Dosage
The WHO monograph on Radix Astragali gives doses of 3-9 g per day. Traditional Chinese medicine references often cite a considerably higher 9-30 g of dried root per day; WHO's figure is the conservative regulatory-tier one and is stated here in preference. Educational reference only, not a prescription.
Clinical studies commonly use extracts providing the equivalent of several grams of dried root daily, in divided doses. Educational reference only, not a prescription.
Not documented
References
Lookalikes Review
References & Sources
- Xu, B., Huang, J.P., Peng, G., Cao, W., Liu, Z. et al (2024) 'Total biosynthesis of the medicinal triterpenoid saponin astragalosides', Nature Plants, 10(11), pp. 1826-1837. doi:10.1038/s41477-024-01827-4 Preclinical
https://doi.org/10.1038/s41477-024-01827-4 - Auyeung, K.K., Han, Q.B. and Ko, J.K (2016) 'Astragalus membranaceus: A Review of its Protection Against Inflammation and Gastrointestinal Cancers', The American Journal of Chinese Medicine, 44(1), pp. 1-22. doi:10.1142/S0192415X16500014 Traditional / reference
https://doi.org/10.1142/S0192415X16500014 - Zhang, Y., Ji, W., Qin, H., Chen, Z., Zhou, Y. et al (2024) 'Astragalus polysaccharides alleviate DSS-induced ulcerative colitis in mice by restoring SCFA production and regulating Th17/Treg cell homeostasis in a microbiota-dependent manner', Carbohydrate Polymers, 349, pp. 122829. doi:10.1016/j.carbpol.2024.122829 Preclinical
https://doi.org/10.1016/j.carbpol.2024.122829 - Fu, J., Wang, Z., Huang, L., Zheng, S., Wang, D., Chen, S., Zhang, H. and Yang, S (2014) 'Review of the botanical characteristics, phytochemistry, and pharmacology of Astragalus membranaceus (Huangqi)', Phytotherapy Research, 28(9), pp. 1275-1283. doi:10.1002/ptr.5188 Meta-analysis / review
https://doi.org/10.1002/ptr.5188 - Zhang, J., Wu, C., Gao, L., Du, G. and Qin, X (2019) 'Astragaloside IV derived from Astragalus membranaceus: A research review on the pharmacological effects', Advances in Pharmacology. doi:10.1016/bs.apha.2019.08.002 Traditional / reference
https://doi.org/10.1016/bs.apha.2019.08.002 - Dong, M., Li, J., Yang, D., Li, M. and Wei, J (2023) 'Biosynthesis and pharmacological activities of flavonoids, triterpene saponins and polysaccharides derived from Astragalus membranaceus', Molecules, 28(13), pp. 5018. doi:10.3390/molecules28135018 Meta-analysis / review
https://doi.org/10.3390/molecules28135018 - Chen, G., Jiang, N., Zheng, J., Hu, H., Yang, H., Lin, A., Hu, B. and Liu, H (2023) 'Structural characterization and anti-inflammatory activity of polysaccharides from Astragalus membranaceus', International Journal of Biological Macromolecules, 241, pp. 124386. doi:10.1016/j.ijbiomac.2023.124386 Preclinical
https://doi.org/10.1016/j.ijbiomac.2023.124386 - Zheng, Q., Zhuang, Z., Wang, Z., Deng, L., Jin, W., Huang, Z., Zheng, G. and Wang, Y (2020) 'Clinical and preclinical systematic review of Astragalus membranaceus for viral myocarditis', Oxidative Medicine and Cellular Longevity, 2020, pp. 1560353. doi:10.1155/2020/1560353 Meta-analysis / review
https://doi.org/10.1155/2020/1560353 - Dai, Y., Wang, Y., Kang, Q., Wu, Y., Liu, Y., Su, Y., Wang, X., Xiu, M. and He, J (2024) 'The protective effect and bioactive compounds of Astragalus membranaceus against neurodegenerative disorders via alleviating oxidative stress in Drosophila', FASEB Journal, 38(13), pp. e23727. doi:10.1096/fj.202400390R Preclinical
https://doi.org/10.1096/fj.202400390R - Xu, L., Xu, X., Hou, X., Wang, F., Gao, S. and Zhang, H (2019) 'Adjuvant therapy with Astragalus membranaceus for post-stroke fatigue: a systematic review', Metabolic Brain Disease, 35(1), pp. 83-93. doi:10.1007/s11011-019-00483-4 Meta-analysis / review
https://doi.org/10.1007/s11011-019-00483-4 - Li, C.X., Liu, Y., Zhang, Y.Z., Li, J.C. and Lai, J (2022) 'Astragalus polysaccharide: a review of its immunomodulatory effect', Archives of Pharmacal Research. doi:10.1007/s12272-022-01393-3 Preclinical
https://doi.org/10.1007/s12272-022-01393-3 - Jin, M., Zhao, K., Huang, Q. and Shang, P (2014) 'Structural features and biological activities of the polysaccharides from Astragalus membranaceus', International Journal of Biological Macromolecules, 64, pp. 257-266. doi:10.1016/j.ijbiomac.2013.12.002 Preclinical
https://doi.org/10.1016/j.ijbiomac.2013.12.002 - Liu, Y. and Lv, W (2019) 'Research progress in Astragalus membranaceus and its active components on immune responses in liver fibrosis', Chinese Journal of Integrative Medicine, 26(10), pp. 794-800. doi:10.1007/s11655-019-3039-1 Meta-analysis / review
https://doi.org/10.1007/s11655-019-3039-1 - World Health Organization (1999) 'Radix Astragali'. Available at: https://iris.who.int/items/6418d8af-5200-4e6b-9bf5-004f3aa62a37 Traditional / reference
https://iris.who.int/items/6418d8af-5200-4e6b-9bf5-004f3aa62a37 - Xu, F. and Cui, W.-Q. and Wei, Y. and Cui, J. and Qiu, J. and Hu, L.-L. and Gong, W.-Y. and Dong, J.-C. and Liu, B.-J (2018) 'Astragaloside IV inhibits lung cancer progression and metastasis by modulating macrophage polarization through AMPK signaling', Journal of Experimental & Clinical Cancer Research, 37(1), pp. 207. doi:10.1186/s13046-018-0878-0 Preclinical
https://doi.org/10.1186/s13046-018-0878-0 - Deng, G. and Zhou, L. and Wang, B. and Sun, X. and Zhang, Q. and Chen, H. and Wan, N. and Ye, H. and Wu, X. and Sun, D. and Sun, Y. and Cheng, H (2022) 'Targeting cathepsin B by cycloastragenol enhances antitumor immunity of CD8 T cells via inhibiting MHC-I degradation', Journal for ImmunoTherapy of Cancer, 10(10), pp. e004874. doi:10.1136/jitc-2022-004874 Preclinical
https://doi.org/10.1136/jitc-2022-004874 - Li, Q. and Zhang, C. and Xu, G. and Shang, X. and Nan, X. and Li, Y. and Liu, J. and Hong, Y. and Wang, Q. and Peng, G (2024) 'Astragalus polysaccharide ameliorates CD8 T cell dysfunction through STAT3/Gal-3/LAG3 pathway in inflammation-induced colorectal cancer', Biomedicine & Pharmacotherapy, 171, pp. 116172. doi:10.1016/j.biopha.2024.116172 Preclinical
https://doi.org/10.1016/j.biopha.2024.116172 - Zhang, H.W., Lin, Z.X., Xu, C., Leung, C. and Chan, L.S (2014) 'Astragalus (a traditional Chinese medicine) for treating chronic kidney disease', Cochrane Database of Systematic Reviews. doi:10.1002/14651858.CD008369.pub2 Meta-analysis / review
https://doi.org/10.1002/14651858.CD008369.pub2
- Zhang, Y., Wu, L., Ma, Z., Cheng, J. and Liu, J (2018) 'Corn silk (Zea mays L.), a source of natural antioxidants with alpha-amylase, alpha-glucosidase, advanced glycation and diabetic nephropathy inhibitory activities', Biomedicine & Pharmacotherapy, 110, pp. 510-517. doi:10.1016/j.biopha.2018.11.126 Preclinical
https://doi.org/10.1016/j.biopha.2018.11.126 - Wang, Y. and others (2023) 'Corn Silk Flavonoids Ameliorate Hyperuricemia via PI3K/AKT/NF-kappaB Pathway', Journal of Agricultural and Food Chemistry, 71(26), pp. 9968-9979. doi:10.1021/acs.jafc.3c03422 Preclinical
https://doi.org/10.1021/acs.jafc.3c03422 - Habtemariam, S (1998) 'Extract of corn silk (stigma of Zea mays) inhibits the tumour necrosis factor-alpha- and bacterial lipopolysaccharide-induced cell adhesion and ICAM-1 expression', Planta Medica, 64(4), pp. 314-318. doi:10.1055/s-2006-957441 Preclinical
https://doi.org/10.1055/s-2006-957441 - Chen, M.Y., Wu, J.M. and others (2025) 'Unlocking Corn Silk's Potential: Bioactive Compounds Targeting Age-Related Diseases', Molecular Nutrition & Food Research, 69(10), pp. e70117. doi:10.1002/mnfr.70117 Meta-analysis / review
https://doi.org/10.1002/mnfr.70117 - Li, Y. and others (2023) 'Diterpenoid and phenolic constituents from corn silk (Zea mays) with PTP1B inhibitory activity', Natural Product Research, 37(24), pp. 4189-4196. doi:10.1080/14786419.2023.2265038 Preclinical
https://doi.org/10.1080/14786419.2023.2265038 - Wang, B. and others (2019) 'Corn Silk (Zea mays) Induced Apoptosis in Human Breast Cancer (MCF-7) Cells via the ROS-Mediated Mitochondrial Pathway', Oxidative Medicine and Cellular Longevity, 2019, pp. 9789241. doi:10.1155/2019/9789241 Preclinical
https://doi.org/10.1155/2019/9789241 - Guo, J. and others (2024) 'Extraction, purification, structural characteristics, and pharmacological activities of the polysaccharides from corn silk: A review', International Journal of Biological Macromolecules, 274, pp. 133433. doi:10.1016/j.ijbiomac.2024.133433 Meta-analysis / review
https://doi.org/10.1016/j.ijbiomac.2024.133433 - Li, X. and others (2025) 'Ultrasound-assisted extraction of anti-inflammatory actives from corn silk (Zea mays L.): Process optimization, machine learning screening, and interaction mechanisms', Ultrasonics Sonochemistry, 118, pp. 107420. doi:10.1016/j.ultsonch.2025.107420 Preclinical
https://doi.org/10.1016/j.ultsonch.2025.107420 - Wang, Y. and others (2024) 'An Umbrella Insight into the Phytochemistry Features and Biological Activities of Corn Silk: A Narrative Review', Molecules, 29(4), pp. 891. doi:10.3390/molecules29040891 Meta-analysis / review
https://doi.org/10.3390/molecules29040891 - Zhang, W. and others (2023) 'Acidic polysaccharide from corn silk: Structural & conformational properties and hepatoprotective activity', International Journal of Biological Macromolecules, 237, pp. 123851. doi:10.1016/j.ijbiomac.2023.123851 Preclinical
https://doi.org/10.1016/j.ijbiomac.2023.123851 - Hasanudin, K., Hashim, P. and Mustafa, S (2012) 'Corn Silk (Stigma Maydis) in Healthcare: A Phytochemical and Pharmacological Review', Molecules. doi:10.3390/molecules171112937 Traditional / reference
https://doi.org/10.3390/molecules171112937 - Caixeta, G.A.B. and dos Santos Reis, D. and Soares, K.I. and de Brito Ramos, I. and Mendes, G.H.L. and others (2025) 'Toxicological Assessment of a Standardized Dry Extract of Zea mays L. (Poaceae) Stigmas During Gestation: Effects on Maternal Parameters and Fetal Outcomes in Wistar Rats', Birth Defects Research, 117(9). doi:10.1002/bdr2.2526 Traditional / reference
https://doi.org/10.1002/bdr2.2526 - Velazquez, D.V.O. and Xavier, H.S. and Batista, J.E.M. and de Castro-Chaves, C (2005) 'Zea mays L. extracts modify glomerular function and potassium urinary excretion in conscious rats', Phytomedicine, 12(5), pp. 363--369. doi:10.1016/j.phymed.2003.12.010 Traditional / reference
https://doi.org/10.1016/j.phymed.2003.12.010
Generated automatically from the Omnia Sana plant database and its cited sources. For educational purposes only — not medical advice. Always consult a qualified practitioner before using medicinal plants.