Quercetin NutraMedix capsules 120 pieces

Delivery time: 1-3 working days within Germany, 5-10 days within Europe
Regular price €19,95 EUR
Sale price €19,95 EUR Regular price

Quercetin is a plant substance that occurs naturally in many foods. It is associated with many health benefits, especially strengthening the immune system.

Per dose (2 capsules): 500 mg quercetin (from Sophora Japonica flowers)
Other ingredients: Vegetarian capsule shell, magnesium stearate from plant sources
Free from gluten, sugar and dairy ingredients

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Why Quercetin NutraMedix capsules 120 pieces

Zinc, vitamin C and quercetin: your unbeatable package for a powerful immune system. The three immune boosters work in a harmonious symbiosis, complementing and reinforcing each other's effects. Because quercetin not only supports the absorption of zinc and vitamin C - it also shows antioxidant and anti-inflammatory properties that can strengthen your immune system. Experience natural support for a robust immune system now!

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Further information

Quercetin is a secondary plant substance from the flavonoid group. It is found naturally in many foods, such as onions, kale, apples, berries, grapes and citrus fruits. Flavonoids in general, especially quercetin, are currently being intensively researched and are associated with numerous positive properties. Quercetin is particularly known for its strong ability to neutralize free radicals, i.e. to act as an antioxidant. In addition, it is said to have anti-inflammatory and antihypertensive effects.

You have further questions?

We try to answer all your questions with the best of our conscience. If you have any further questions, you can contact us at any time.

Can you premix NutraMedix drops?

All drop preparations can be mixed together in the same glass of water. The mixture can be stored in the refrigerator for several days before consumption.

How many drops are in a bottle?

Each 30 ml bottle of our liquid products contains around 600 drops, correspondingly each 60 ml bottle contains around 1200 drops and each 120 ml bottle contains around 2400 drops. This way you can easily calculate how many days a product will last.

How high is our bioavailability?

When we say that our products have high bioavailability, we mean that all of our products are designed to be easily absorbed by the body at a cellular level. That's why we offer many of our products in liquid form.

My child takes NutraMedix products. Is the dosage different?

The recommended dose of NutraMedix products is intended for an average-sized adult weighing 60 - 85 kg. For children, a guideline value of 1/4 of the specified dose per 15 kg of body weight may apply.

Are there scientific studies and sources on the ingredients?

The sources listed serve to provide information regarding the ingredients of this product. They do not claim to be complete or exclusive.

1 Panche, AN, Diwan, AD, & Chandra, SR (2016). Flavonoids: an overview. Journal of nutritional science, 5, e47.

2 Al-Ishaq, RK, Abotaleb, M., Kubatka, P., Kajo, K., & Büsselberg, D. (2019). Flavonoids and Their Anti-Diabetic Effects: Cellular Mechanisms and Effects to Improve Blood Sugar Levels. Biomolecules, 9(9), 430.

3 Li, Y., Yao, J., Han, C., Yang, J., Chaudhry, MT, Wang, S., Liu, H., & Yin, Y. (2016). Quercetin, Inflammation and Immunity. Nutrients, 8(3), 167.

4 PubChem. (2021). Quercetin. Retrieved August 28, 2021, from https://pubchem.ncbi.nlm.nih.gov/compound/Quercetin

5 PubChem. (2021). Quercetin dihydrate. Retrieved August 29, 2021, from https://pubchem.ncbi.nlm.nih.gov/compound/5284452

6 Dabeek, WM, & Marra, MV (2019). Dietary Quercetin and Kaempferol: Bioavailability and Potential Cardiovascular-Related Bioactivity in Humans. Nutrients, 11(10), 2288.

7 Jaffe R, Mani J. Chapter 29 - Polyphenolics Evoke Healing Responses: Clinical Evidence and Role of Predictive Biomarkers. Polyphenols: Mechanisms of Action in Human Health and Disease. January 2018:403-413.

8 Guo, Y., Mah, E., Davis, CG, Jalili, T., Ferruzzi, MG, Chun, OK, & Bruno, RS (2013). Dietary fat increases quercetin bioavailability in overweight adults. Molecular nutrition & food research, 57(5), 896-905.

9 Jafarinia, M., Sadat Hosseini, M., Kasiri, N., Fazel, N., Fathi, F., Ganjalikhani Hakemi, M., & Eskandari, N. (2020). Quercetin with the potential effect on allergic diseases. Allergy, asthma, and clinical immunology: official journal of the Canadian Society of Allergy and Clinical Immunology, 16, 36.

10 Drugs and Lactation Database (LactMed) [Internet]. (2021). Bethesda (MD): National Library of Medicine (US). Available from: https://www.ncbi.nlm.nih.gov/books/NBK501922/

11 Eastland Herb. (2018). Eastland Herb - Chinese Herbal Medicine: Materia Medica and Formula & Strategies (4.3). [mobile app]. Appstore. https://apps.apple.com/us/app/eastland-herb-chinese-medicine/id737380894.

12 Mlcek, J., Jurikova, T., Skrovankova, S., & Sochor, J. (2016). Quercetin and Its Anti-Allergic Immune Response. Molecules (Basel, Switzerland), 21(5), 623.

13 Karuppagounder, V., Arumugam, S., Thandavarayan, RA, Sreedhar, R., Giridharan, VV, & Watanabe, K. (2016). Molecular targets of quercetin with anti-inflammatory properties in atopic dermatitis. Drug discovery today, 21(4), 632–639.

14 Weng, Z., Zhang, B., Asadi, S., Sismanopoulos, N., Butcher, A., Fu, X., Katsarou-Katsari, A., Antoniou, C., & Theoharides, TC (2012) . Quercetin is more effective than cromolyn in blocking human mast cell cytokine release and inhibits contact dermatitis and photosensitivity in humans. PloS one, 7(3), e33805.

15 Juríková, T., Mlˇcek, J., Sochor, J., Hegedusová, A. (2015). Polyphenols and their mechanism of action in allergic immune response. Global Journal of Allergy, 1, 037-039.

16 Chen, H., Lu, C., Liu, H., Wang, M., Zhao, H., Yan, Y., & Han, L. (2017). Quercetin ameliorates imiquimod-induced psoriasis-like skin inflammation in mice via the NF-κB pathway. International immunopharmacology, 48, 110–117.

17 Huang, RY, Yu, YL, Cheng, WC, OuYang, CN, Fu, E., & Chu, CL (2010). Immunosuppressive effect of quercetin on dendritic cell activation and function. Journal of immunology (Baltimore, Md. : 1950), 184(12), 6815-6821.

18 Heinz, SA, Henson, DA, Austin, MD, Jin, F., & Nieman, DC (2010). Quercetin supplementation and upper respiratory tract infection: A randomized community clinical trial. Pharmacological research, 62(3), 237-242.

19 Nieman, DC, Henson, DA, Gross, SJ, Jenkins, DP, Davis, JM, Murphy, EA, Carmichael, MD, Dumke, CL, Utter, AC, McAnulty, SR, McAnulty, LS, & Mayer, EP ( 2007). Quercetin reduces illness but not immune perturbations after intensive exercise. Medicine and science in sports and exercise, 39(9), 1561–1569.

20 Dabbagh-Bazarbachi, H., Clergeaud, G., Quesada, IM, Ortiz, M., O'Sullivan, CK, & Fernández-Larrea, JB (2014). Zinc ionophore activity of quercetin and epigallocatechin-gallate: from Hepa 1-6 cells to a liposome model. Journal of agricultural and food chemistry, 62(32), 8085–8093.

21 Vinson, JA, & Bose, P. (1988). Comparative bioavailability to humans of ascorbic acid alone or in a citrus extract. The American journal of clinical nutrition, 48(3), 601-604.

22 Boots, AW, Kubben, N., Haenen, GR, & Bast, A. (2003). Oxidized quercetin reacts with thiols rather than with ascorbate: implication for quercetin supplementation. Biochemical and biophysical research communications, 308(3), 560–565.

23 Bors, W., Michel, C., & Schikora, S. (1995). Interaction of flavonoids with ascorbate and determination of their univalent redox potentials: a pulse radiolysis study. Free radical biology & medicine, 19(1), 45–52.

24 Brüll, V., Burak, C., Stoffel-Wagner, B., Wolffram, S., Nickenig, G., Müller, C., Langguth, P., Alteheld, B., Fimmers, R., Naaf, S., Zimmermann, BF, Stehle, P., & Egert, S. (2015). Effects of a quercetin-rich onion skin extract on 24 h ambulatory blood pressure and endothelial function in overweight-to-obese patients with (pre-)hypertension: a randomized double-blind placebo-controlled cross-over trial. The British journal of nutrition, 114(8), 1263-1277.

25 Dower, JI, Geleijnse, JM, Gijsbers, L., Zock, PL, Kromhout, D., & Hollman, PC (2015). Effects of the pure flavonoids epicatechin and quercetin on vascular function and cardiometabolic health: a randomized, double-blind, placebo-controlled, crossover trial. The American journal of clinical nutrition, 101(5), 914-921.

26 Loke, WM, Hodgson, JM, Proudfoot, JM, McKinley, AJ, Puddey, IB, & Croft, KD (2008). Pure dietary flavonoids quercetin and (-)-epicatechin augment nitric oxide products and reduce endothelin-1 acutely in healthy men. The American journal of clinical nutrition, 88(4), 1018-1025.

27 Xu, D., Hu, MJ, Wang, YQ, & Cui, YL (2019). Antioxidant Activities of Quercetin and Its Complexes for Medicinal Application. Molecules (Basel, Switzerland), 24(6), 1123.

28 Khorshidi, M., Moini, A., Alipoor, E., Rezvan, N., Gorgani-Firuzjaee, S., Yaseri, M., & Hosseinzadeh-Attar, M.J. (2018). The effects of quercetin supplementation on metabolic and hormonal parameters as well as plasma concentration and gene expression of resistin in overweight or obese women with polycystic ovary syndrome. Phytotherapy research: PTR, 32(11), 2282–2289.

29 Shoskes, DA, Zeitlin, SI, Shahed, A., & Rajfer, J. (1999). Quercetin in men with category III chronic prostatitis: a preliminary prospective, double-blind, placebo-controlled trial. Urology, 54(6), 960-963.

30 Natural Medicines. (2021, August 28). Quercetin [monograph]. http://naturalmedicines.therapeuticresearch.com

31 Ahrens, MJ, & Thompson, D.L. (2013). Effect of emulin on blood glucose in type 2 diabetics. Journal of medicinal foods, 16(3), 211-215.

32 Larson, A., Witman, MA, Guo, Y., Ives, S., Richardson, RS, Bruno, RS, Jalili, T., & Symons, JD (2012). Acute, quercetin-induced reductions in blood pressure in hypertensive individuals are not secondary to lower plasma angiotensin-converting enzyme activity or endothelin-1: nitric oxide. Nutrition research (New York, NY), 32(8), 557-564.

33 Edwards, RL, Lyon, T., Litwin, SE, Rabovsky, A., Symons, JD, & Jalili, T. (2007). Quercetin reduces blood pressure in hypertensive subjects. The Journal of nutrition, 137(11), 2405-2411.

34 Choi, JS, Choi, BC, & Choi, KE (2004). Effect of quercetin on the pharmacokinetics of oral cyclosporine. American journal of health-system pharmacy : AJHP : official journal of the American Society of Health-System Pharmacists, 61(22), 2406–2409.

35 Bedada, S.K., & Neerati, P. (2018). Evaluation of the effect of quercetin treatment on CYP2C9 enzyme activity of diclofenac in healthy human volunteers. Phytotherapy research: PTR, 32(2), 305–311.

36 Zhao, Q., Wei, J., & Zhang, H. (2019). Effects of quercetin on the pharmacokinetics of losartan and its metabolite EXP3174 in rats. xenobiotics; the fate of foreign compounds in biological systems, 49(5), 563–568.

37 Wu, LX, Guo, CX, Chen, WQ, Yu, J., Qu, Q., Chen, Y., Tan, ZR, Wang, G., Fan, L., Li, Q., Zhang, W ., & Zhou, H.H. (2012). Inhibition of the organic anion-transporting polypeptide 1B1 by quercetin: an in vitro and in vivo assessment. British journal of clinical pharmacology, 73(5), 750-757.

38 Bhutani, P., Rajanna, PK, & Paul, AT (2020). Impact of quercetin on pharmacokinetics of quetiapine: insights from in-vivo studies in wistar rats. xenobiotics; the fate of foreign compounds in biological systems, 50(12), 1483–1489.

39 Duan, KM, Wang, SY, Ouyang, W., Mao, YM, & Yang, LJ (2012). Effect of quercetin on CYP3A activity in Chinese healthy participants. Journal of clinical pharmacology, 52(6), 940-946.

Important information about the product description (disclaimer)

This product and its description do not replace a visit to the doctor and do not represent a promise of healing, but rather serve to provide information. The statements made are based on traditional traditions and experience and have not been proven by scientific studies. If you have serious or unclear symptoms, please seek medical advice.