An official website of the United States government.
Chemical ID
QUERCETIN
Ubiquitous
No
| Dosage | Reference |
|---|---|
| LD50=160 (orl mus) | |
| LD50=>2,000 (orl rat) | Pizzorno, J.E. and Murray, M.T. 1985. A Textbook of Natural Medicine. John Bastyr College Publications, Seattle, Washington (Looseleaf). |
| Activity | Dosage | Reference |
|---|---|---|
| 11B-HSD-Inhibitor | not available | Duke, 1992 * |
| 5-Lipoxygenase-Inhibitor | IC50 (uM)=4 | Duke, 1992 * |
| Aldehyde-Oxidase-Inhibitor | IC70-96=10 uM | Duke, 1992 * |
| Aldose-Reductase-Inhibitor | 100 uM | Duke, 1992 * |
| Aldose-Reductase-Inhibitor | 4 ug/ml | Ichikawa, K., et al. 1991. Isolation and Structure Determination of Aldose Reductase Inhibitors from Traditional Thai Medicine, and Syntheses of Their Derivatives. Sankyo Kenkyusho Nempo, 43: 99-110. |
| Aldose-Reductase-Inhibitor | IC50=0.84 ug/ml cow | Okada,Y,et al.1995.Search for Naturally Occurring Substances to Prevent the Complications of Diabetes.II.Inhibitory Effect of Coumarin and Flavonoid Derivatives on Bovine Lens Aldose Reductase and Rabbit Platelet Aggregation.Chem Pharm Bull43(8):1385-1387 |
| Aldose-Reductase-Inhibitor | IC50=0.344 uM | Mao, X. M., Zhang, J. Q. 1993. Inhibition of Aldose Reductase by Extracts of Chinese Herbal Medicine. Zhongguo Zhongyao Zazhi , 18(10): 623-624. |
| Allelochemic | IC82=1 mM | Lydon, J. & Duke, S., The potential of pesticides from plants, pp. 1-41 in Craker, L. & Simon, J., eds, Herbs, Spices & Medicinal Plants: Recent Advances in Botany, Horticulture, & Pharmacology, v. 4, Oryx Press, Phoenix, 1989, 267pp. |
| Allergenic | not available | Jeffery B. Harborne and H. Baxter, eds. 1983. Phytochemical Dictionary. A Handbook of Bioactive Compounds from Plants. Taylor & Frost, London. 791 pp. |
| Analgesic | not available | Duke, 1992 * |
| Antiaflatoxin | IC50=7.5 ppm | Duke, 1992 * |
| Antiaflatoxin | IC50=25 uM | Duke, 1992 * |
| Antiaggregant | IC50=55 uM | Economic & Medicinal Plant Research, 5: 333. |
| Antiaggregant | 30 uM | Duke, 1992 * |
| Antiaging | not available | Duke, 1992 * |
| Antiallergic | IC50=14 uM | Jim Duke's personal files. |
| Antialzheimeran | not available | Duke, 1992 * |
| Antianaphylactic | not available | Meli, R., Autore, G., Di Carlo, G., Capasso, F. Inhibitory Action of Quercetin on Intestinal Transit in Mice. Phytotherapy Research 4(5): 201, 1990. |
| Antiangiogenic | not available | Duke, 1992 * |
| Antiarthritic | not available | Duke, 1992 * |
| Plant Name | Plant Part | Low Parts Per Million | High Parts Per Million | Standard Deviation | Reference |
|---|---|---|---|---|---|
| Abelmoschus esculentus | Flower | not available | not available | not available | ANON. 1948-1976. The Wealth of India raw materials. Publications and Information Directorate, CSIR, New Delhi. 11 volumes. |
| Abelmoschus moschatus | Flower | not available | not available | not available | Rizk, A.F.M. and Al-Nowaihi, A.S., The Phytochemistry of the Horticultural Plants of Qatar, Scientific and Applied Research Centre, University of Qatar. |
| Abutilon theophrasti | Root | not available | not available | not available | Paszkowski, W. L., Kremer, R. J. 1988. Biological Activity and Tentative Identification of Flavonoid Components in Velvetleaf (Abutilon theophrasti Medik.) Seed Coats. J. Chem. Ecol., 14(7): 1573-1582. |
| Abutilon theophrasti | Flower | not available | not available | not available | Matlawska, I. 1990. Investigation of Flavonoid Compounds of Selected Species from Malvaceae Family. Herba Pol., 36(3): 65-69. |
| Abutilon theophrasti | Leaf | not available | not available | not available | Matlawska, I. 1990. Investigation of Flavonoid Compounds of Selected Species from Malvaceae Family. Herba Pol., 36(3): 65-69. |
| Acacia catechu | Plant | not available | not available | not available | Duke, 1992 * |
| Acacia nilotica | Plant | not available | not available | not available | Duke, 1992 * |
| Acacia senegal | Plant | not available | not available | not available | Duke, 1992 * |
| Achillea millefolium | Plant | not available | not available | not available | Tunon, H., Thorsell, W., and Bohlin, L. 1993. Mosquito Repelling Activity of Compounds Occurring in Achillea millefolium L. (Asteraceae). Economic Botany 48(2): 111-120, 1994. |
| Acinos suaveolens | Shoot | not available | 430.0 | 1.4 | Jim Duke's personal files. |
| Actinidia chinensis | Plant | not available | not available | not available | Duke, 1992 * |
| Aesculus hippocastanum | Bark | not available | not available | not available | List, P.H. and Horhammer, L., Hager's Handbuch der Pharmazeutischen Praxis, Vols. 2-6, Springer-Verlag, Berlin, 1969-1979. |
| Aesculus hippocastanum | Seed | not available | not available | not available | Jim Duke's personal files. |
| Agathosma betulina | Plant | not available | not available | not available | Williamson, E. M. and Evans, F. J., Potter's New Cyclopaedia of Botanical Drugs and Preparations, Revised Ed., Saffron Walden, the C. W. Daniel Co., Ltd., Essex UK, 362 pp, 1988, reprint 1989. |
| Ageratum conyzoides | Plant | not available | not available | not available | J.S. Glasby Dict.Pls Containing 2ndary Metabolite. 1991. |
| Agrimonia eupatoria | Plant | not available | not available | not available | Newall, C. A., Anderson, L. A. and Phillipson, J. D. 1996. Herbal Medicine - A Guide for Health-care Professionals. The Pharmaceutical Press, London. 296pp. |
| Agrimonia eupatoria | Shoot | not available | not available | not available | Duke, 1992 * |
| Ailanthus altissima | Leaf | not available | not available | not available | Duke, 1992 * |
| Albizia lebbeck | Leaf | not available | not available | not available | Wealth of India. |
| Allium cepa | Bulb | 0.0 | 48100.0 | 1.0 | Duke, 1992 * |