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Welcome Shop by health concern Immune system, fatigue and infections Liposomal Quercetin
Natural liposomal quercetin
Natural liposomal quercetin
0821Natural liposomal quercetin
Sans nano-particulesSans glutenVegan
Liposomal Quercetin
Immune system, fatigue and infections
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Premium liposomal quercetin supplement in liquid form standardized to 95%.

  • Highly-absorbable form encapsulated in 'nutri-protective' liposomes.
  • Antioxidant and anti-infectious properties.
  • Several studies suggest anti-inflammatory and antihistamine effects.
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Liposomal Quercetin
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Sophora japonica rich in quercetin

Liposomal Quercetin – Benefits and Risks

Liposomal Quercetin is a dietary supplement containing liquid liposomal quercetin. It combines exceptional efficacy (highly absorbable form and powerful dose) with ease of use (drinkable format).

You will find this premium vegan supplement in our Immunity category.

What Exactly is Quercetin?


Quercetin (also known as quercitol and quertine) is a flavonol, a particular type of flavonoid (1). Flavonoids are polyphenolic compounds that play an important role in plant protection, growth, and pigmentation.

Quercetin is notable for its yellow color and for the many benefits attributed to the plant species that contain it.

Dietary sources

We take in small amounts of this flavonoid when we consume various fruits, vegetables, and other plant-source foods (2). The best dietary sources include:

  • Yellow and red onions;
  • Apples (especially the peel);
  • Berries (blackberries and wild blueberries);
  • Black and green tea;
  • Yellow and green peppers;
  • Capers, etc.

The Benefits of Quercetin, the Most Powerful Bioflavonoid


Plants produce quercetin to help them grow and fight pathogens (3). It offers protection against fungal and bacterial infections. It also strengthens cell walls, making it harder for germs to penetrate, thus reducing infections (4-5).


With antioxidant properties, this flavonoid protects plant cells against damage caused by free radicals and oxidative stress (pollution, UV radiation, etc.) (6-7).


Also contributing to liposomal quercetin benefits are several animal and cell studies that have investigated the potential anti-allergy properties of this powerful bioflavonoid. This compound seems able to regulate inflammation and inhibit the release of histamine (a molecule usually produced by the immune systems of allergy sufferers in response to an allergen) (8-9). Many people take quercetin in the spring when trees release pollen into the atmosphere, though it can be taken all year round.

The active ingredient in several medicinal plants

In addition, this polyphenol is responsible for some of the benefits of many medicinal plants (ginkgo, St. John's Wort, elderberry, etc.) (10). It is known to be the most powerful of all the 'bioflavonoids,' i.e., flavonoids that affect human health.

Why Opt for Liposomal Quercetin?

A highly-bioavailable form

Liposomal quercetin is generally considered the best form of quercetin because of its excellent bioavailability. The body absorbs and uses it more effectively than it does the standard form, the form obtained by micronization, and even more so, quercetin anhydrous, Super Quercetin (11-13).

How do liposomes work?

Liposomal quercetin is encapsulated in lipid microparticles called 'liposomes'. These facilitate its passage across the intestinal barrier to release it into the bloodstream and reach the body's cells (14).

And unlike standard quercetin, which often ends up being damaged by gastric juices or the liver, this particular form is protected from metabolic degradation, further increasing the amount of active ingredient reaching the bloodstream (15).

Finally, the composition of these liposomes makes it easier for the product to penetrate cell membranes, enabling even greater quantities of quercetin to reach cells (16).

Why Take Liposomal Quercetin in Liquid Form?

The liquid format of Liposomal Quercetin offers maximum ease of use, eliminating the need to take capsules. You simply have to drink the product.

This form of delivery is particularly suitable for those who find it difficult to swallow capsules (some elderly people for example). Even if this is not a problem for you, the supplement offers exceptional ease of use and efficacy.

4 Reasons to Choose our Liquid Quercetin Supplement

  • Its exceptional bioavailability: as mentioned, the liposomes ensure outstanding bioavailability and uptake, producing rapid, powerful, and long-lasting effects.
  • Its natural source:Liposomal Quercetin is obtained from a flower extract of Sophora japonica, a well-known ornamental tree and known to be an exceptional source of flavonoids. The liposomes are sunflower lecithin phospholipids (a natural source of phosphatidylcholine). We have chosen it over the less expensive soy lecithin as the latter contains more allergens. The supplement is 100% vegan and free from nano-particulates and gluten.
  • Its powerful dose: in the interests of maximizing the supplement's effects, our Sophora japonica flower extract contains a high content of active ingredients (standardized to 95% quercetin).
  • Its natural excipients: completely safe, this supplement contains no controversial excipients. In addition to the phosphatidylcholine in the liposomes, the product uses citric acid, a natural preservative that prevents microbial growth and prolongs the product's life. Potassium sorbate, another natural preservative, is also used for this purpose.

Are there any Side Effects Associated with this Supplement?


Quercetin is generally considered safe: there are virtually no risks associated with oral administration in adults at recommended doses. However, some people have reported side effects of quercetin digestive problems, headaches, or, more rarely, allergic reactions. It should not be taken for long periods as this may cause mild kidney problems. It is not recommended for pregnant women, and it should be kept out of children's reach.


In terms of contraindications, it should not be taken at the same time as blood thinners, blood pressure drugs, non-steroidal anti-inflammatories, or diabetes medication. Take care, too, if you have a thyroid disorder, stomach problems, are taking antibiotics, or are undergoing chemotherapy (17-18). Be sure to consult your doctor if you have any concerns after you buy liposomal quercetin and choose a high-quality, natural-source product from a recognized brand (such as Liposomal Quercetin).

Other Supplements to take in Tandem

If you are keen to support your immunity and fight free radicals, then benefit even more from liposomes by taking Liposomal Vitamin C alongside Liposomal Quercetin. The unbeatable vitamin C supports normal immune system function and energy metabolism and helps reduce fatigue, as well as being an excellent antioxidant (19). Delivered as lipid capsules, this product similarly ensures unparalleled absorption.

If you suffer from allergies, certain plant compounds can help. Alongside Liposomal Quercetin, we would recommend taking our supplement Aller Fight, vegetarian capsules developed to help you cope with allergens. This product combines the best natural ingredients for regulating the immune system (e.g., astragalus) and supporting respiratory health (e.g., maritime pine) at optimal doses (20-22).

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Daily dose: 2 dosing caps
Number of doses per bottle: 25
Amount per dose
Quercetin (from Sophora japonica flower extract standardized to 95% quercetin) 200 mg
Other ingredients: water, sunflower lecithin, glycerol, alcohol*, xanthan gum, potassium sorbate, citric acid.
*Alcohol content < 4.5% vol.,
Directions for use

How Should You Take Liposomal Quercetin?

First, shake the Liposomal Quercetin, then add one dosing capful to a glass of water or fruit juice. Simply consume your quercetin drink to benefit from the supplement's effects.

We recommend adults to take 1 dosing cap twice a day or 2 dosing caps once daily. Each 5 ml dosing cap contains 100 mg of quercetin, so you will be ingesting 200 mg daily, whichever you choose. Make sure you also eat a varied diet.

Once opened, keep the liquid supplement refrigerated for a maximum of 2 months.

No reviews for this product yet
  1. Anand David AV, Arulmoli R, Parasuraman S. Overviews of Biological Importance of Quercetin: A Bioactive Flavonoid. Pharmacogn Rev. 2016 Jul-Dec;10(20):84-89. doi: 10.4103/0973-7847.194044. PMID: 28082789; PMCID: PMC5214562.
  2. Dabeek WM, Marra MV. Dietary Quercetin and Kaempferol: Bioavailability and Potential Cardio-vascular-Related Bioactivity in Humans. Nutrients. 2019 Sep 25;11(10):2288. doi: 10.3390/nu11102288. PMID: 31557798; PMCID: PMC6835347.
  3. Kanwar, M. K., Punia, S., & Sharma, S. (2019). Quercetin enhances plant growth and modulates biochemical activities in tomato (Solanum lycopersicum L.) plants under drought and heat stress conditions. Journal of Experimental Botany, 70(22), 6583-6598. doi: 10.1093/jxb/erz401
  4. Singh, R. K., Rai, M., & Tiwari, M. (2018). Quercetin inhibits growth of Botrytis cinerea and Alternaria alternata and mitigates oxidative damage in tomato (Solanum lycopersicum L.) plants. Plant Pathology, 67(1), 115-126. doi: 10.1111/ppa.12725
  5. Shorobi FM, Nisa FY, Saha S, Chowdhury MAH, Srisuphanunt M, Hossain KH, Rahman MA. Quercetin: A Functional Food-Flavonoid Incredibly Attenuates Emerging and Re-Emerging Viral Infections through Immunomodulatory Actions. Molecules. 2023 Jan 17;28(3):938. doi: 10.3390/molecules28030938. PMID: 36770606; PMCID: PMC9920550.
  6. Anand David AV, Arulmoli R, Parasuraman S. Overviews of Biological Importance of Quercetin: A Bioactive Flavonoid. Pharmacogn Rev. 2016 Jul-Dec;10(20):84-89. doi: 10.4103/0973-7847.194044. PMID: 28082789; PMCID: PMC5214562.
  7. Xu D, Hu MJ, Wang YQ, Cui YL. Antioxidant Activities of Quercetin and Its Complexes for Medicinal Application. Molecules. 2019 Mar 21;24(6):1123. doi: 10.3390/molecules24061123. PMID: 30901869; PMCID: PMC6470739.
  8. Mlcek J, Jurikova T, Skrovankova S, Sochor J. Quercetin and Its Anti-Allergic Immune Response. Molecules. 2016 May 12;21(5):623. doi: 10.3390/molecules21050623. PMID: 27187333; PMCID: PMC6273625.
  9. Jafarinia M, Sadat Hosseini M, Kasiri N, Fazel N, Fathi F, Ganjalikhani Hakemi M, Eskandari N. Quercetin with the potential effect on allergic diseases. Allergy Asthma Clin Immunol. 2020 May 14;16:36. doi: 10.1186/s13223-020-00434-0. PMID: 32467711; PMCID: PMC7227109.
  10. Yang D, Wang T, Long M, Li P. Quercetin: Its Main Pharmacological Activity and Potential Applica-tion in Clinical Medicine. Oxid Med Cell Longev. 2020 Dec 30;2020:8825387. doi: 10.1155/2020/8825387. PMID: 33488935; PMCID: PMC7790550.
  11. The Use of Polyphenols for the Treatment of Alzheimer’s Disease Sethuraman Sathya, Kasi Pan-dima Devi, in Role of the Mediterranean Diet in the Brain and Neurodegenerative Diseases, 2018
  12. Alhowail, A. H., Bloemer, J., Majrashi, M., Pinky, P. D., Bhattacharya, S., Yongli, Z., ... & Dhanasekaran, M. (2019). Liposomal delivery of quercetin positively impacts prophylactic and therapeutic efficacies against influenza virus. European Journal of Pharmaceutics and Biopharmaceutics, 144, 180-192.
  13. Lee MK. Liposomes for Enhanced Bioavailability of Water-Insoluble Drugs: In Vivo Evidence and Recent Approaches. Pharmaceutics. 2020 Mar 13;12(3):264. doi: 10.3390/pharmaceutics12030264. PMID: 32183185; PMCID: PMC7151102.
  14. Shade CW. Liposomes as Advanced Delivery Systems for Nutraceuticals. Integr Med (Encinitas). 2016 Mar;15(1):33-6. PMID: 27053934; PMCID: PMC4818067.
  15. Tan S, Wu T, Zhang D, Zhang Z. Cell or cell membrane-based drug delivery systems. Theranostics. 2015 Apr 27;5(8):863-81. doi: 10.7150/thno.11852. PMID: 26000058; PMCID: PMC4440443.
  16. Tian, T., Zeng, J., Zhao, W., Huang, Y., Liu, Y., Liu, B., . . . Zhang, Y. (2017). Subchronic toxicity and toxicokinetics of quercetin in rats and mice. Journal of Food and Chemical Toxicology, 106(Pt A), 146-155. doi: 10.1016/j.fct.2017.05.044
  17. Andres S, Pevny S, Ziegenhagen R, Bakhiya N, Schäfer B, Hirsch-Ernst KI, Lampen A. Safety As-pects of the Use of Quercetin as a Dietary Supplement. Mol Nutr Food Res. 2018 Jan;62(1). doi: 10.1002/mnfr.201700447. Epub 2017 Dec 19. PMID: 29127724.
  18. Abdullah M, Jamil RT, Attia FN. Vitamin C (Ascorbic Acid) [Updated 2022 Oct 25]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2023 Jan-. Available from: https://www.ncbi.nlm.nih.gov/books/NBK499877/..
  19. Zheng Y, Ren W, Zhang L, Zhang Y, Liu D, Liu Y. A Review of the Pharmacological Action of Astragalus Polysaccharide. Front Pharmacol. 2020 Mar 24;11:349. doi: 10.3389/fphar.2020.00349. PMID: 32265719; PMCID: PMC7105737.
  20. Wang W, Jing W, Liu Q. Astragalus Oral Solution Ameliorates Allergic Asthma in Children by Regu-lating Relative Contents of CD4+CD25highCD127low Treg Cells. Front Pediatr. 2018 Sep 20;6:255. doi:
  21. Shin NR, Ryu HW, Ko JW, Park JW, Kwon OK, Oh SR, Kim JC, Shin IS, Ahn KS. A standardized bark extract of Pinus pinaster Aiton (Pycnogenol®) attenuated chronic obstructive pulmonary dis-ease via Erk-sp1 signaling pathway. J Ethnopharmacol. 2016 Dec 24;194:412-420. doi: 10.1016/j.jep.2016.10.029. Epub 2016 Oct 8. PMID: 27725237.

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