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Quercetin – Product Information

Quercetin is a natural plant chemical that belongs to the flavonoid polyphenol class. It is well known for its possible health advantages and may be found in a variety of fruits, vegetables, and cereals. The French scientist Georges Pierre-Paul Émile Rouget isolated and discovered quercetin in the early nineteenth century, naming it after its presence in oak bark (Quercus robur). Over time, research has revealed a variety of health benefits, including antioxidant capabilities that are critical for protecting cells from free radical damage. Ongoing research in the twentieth and twenty-first centuries continues to investigate its potential in cardiovascular health, immune support, and its role in the prevention of chronic diseases, making it a topic of ongoing scientific interest.

CAS Number 117-39-5
Molar Mass 302,236 g/mol
Chemical Formula C15H10O7
IUPAC Name 2-(3,4-dihydroxyphenyl)-3,5,7-trihydroxychromen-4-one

What is Quercetin?

Quercetin is a flavonoid with the molecular formula C15H10O7 in scientific terminology. It is a plant pigment that gives many fruits, vegetables, and flowers their brilliant colors. Quercetin is well-known for its potential antioxidant and anti-inflammatory effects, which are essential for cellular health and protecting the body from oxidative stress. This component can be found in a variety of foods, including apples, onions, berries, citrus fruits, and leafy greens. [R] [R]

Possible Applications of Quercetin

Antioxidant Protection

Quercetin, a powerful antioxidant, has been extensively examined for its ability to neutralize damaging free radicals. It may have the potential to help protect cells from oxidative stress, lowering the risk of chronic diseases such as heart disease, cancer, and neurological disorders, according to research.[R]


Quercetin has been found in clinical investigations to have anti-inflammatory effects. It can potentially decrease the generation of inflammatory indicators like cytokines and aid in the management of chronic inflammatory disorders like arthritis and inflammatory bowel disease.[R] [R]

Immune Support

Quercetin’s immunomodulatory properties have been studied. According to research, it may improve immune function by enhancing immune cell synthesis and activation. This has the potential to improve the body’s ability to fight infections. [R] [R]

Heart Health

Several studies have examined quercetin’s impact on cardiovascular health. It may contribute to healthy blood pressure levels, reduce LDL cholesterol oxidation, and potentially improve endothelial function, which helps maintain proper blood vessel health.[R]

Allergy Relief

Quercetin’s ability to stabilize mast cells and inhibit histamine release has been demonstrated in research. This can be beneficial for subjects experiencing allergy symptoms, offering a potential natural alternative to antihistamine medications.[R][R]

Cognitive Function

While research is ongoing, quercetin has shown great potential in animal laboratory studies as a neuroprotective agent. It may help maintain cognitive function and protect against neurodegenerative diseases like Alzheimer’s. [R][R]

Skin Health

The antioxidant and anti-inflammatory effects of quercetin may promote healthier skin. More clinical research is needed in this area, although it can help and potentially minimize the appearance of age indicators and treat skin issues associated with inflammation.[R]

Antiviral Properties

Preliminary research has looked into quercetin’s antiviral properties, particularly against some respiratory infections. While it may reduce viral replication, more clinical trials are needed to determine its efficacy as a stand-alone antiviral treatment. [R] [R]

Cancer Prevention

The role of quercetin in cancer prevention is being studied. Some research suggests that it can limit cancer cell proliferation, reduce inflammation, and improve the efficacy of chemotherapy and radiation therapy in combination treatments. [R] [R] [R] [R]

Diabetes Management

Clinical research suggests that quercetin may potentially help regulate blood sugar levels by improving insulin sensitivity and reducing insulin resistance. This could be beneficial for subjects with type 2 diabetes or prediabetes. [R] [R] [R]

Gut Health

Quercetin has been investigated for its impact on gut health. It may promote the growth of beneficial gut bacteria, such as Bifidobacteria and Lactobacilli while reducing inflammation in the digestive tract. [R] [R]

How Does Quercetin Work?

Quercetin operates within the body through several scientifically established mechanisms. Primarily recognized as a potent antioxidant, quercetin effectively neutralizes harmful free radicals, safeguarding cells from oxidative stress and potential damage.[R]

Its anti-inflammatory properties stem from its ability to hinder the production of inflammatory molecules, making it valuable in mitigating conditions marked by chronic inflammation, including arthritis and allergies.

Quercetin’s influence extends to immune modulation, as it has the potential to enhance the production and activity of crucial immune cells, bolstering the body’s defense against infections and cancers.[R]

Additionally, it promotes vasodilation, improving blood flow and contributing to cardiovascular health, while also potentially stabilizing mast cells, reducing histamine release, and providing relief from allergy symptoms. Emerging research explores its role in blood sugar regulation, neuroprotection, antiviral activity, and support for gut health.[R]

Quercetin’s potential to slow cancer cell growth and enhance cancer treatments underscores its multifaceted benefits. These mechanisms collectively make quercetin a subject of ongoing scientific interest in various fields of health and medicine. [R][R]

Frequently Asked Questions (FAQs)

What are natural food sources of quercetin?

Quercetin is commonly found in foods such as apples, onions, berries (particularly cranberries and blueberries), citrus fruits (like oranges and lemons), it can also be found in vegetable sources like leafy greens (such as spinach and kale), grapes, tomatoes, broccoli, and red wine. It can also be found in tea, especially green tea.

Can quercetin be obtained from herbs or botanical extracts?

Yes, quercetin supplements can also be obtained from herbal sources and botanical extracts. For example, it is present in herbs like St. John’s wort, Ginkgo biloba, and Echinacea. These sources are sometimes used in traditional or herbal remedies.

Is quercetin available in other forms?

Quercetin is available in various forms, including a cellulose capsule, tablet, and powdered form. It can also be found in combination with other vitamins and minerals, such as quercetin with vitamin C, which is believed to enhance its absorption in the body.

Can mixing quercetin with other substances improve its efficacy?

It is thought that combining quercetin with other substances, such as citrus bioflavonoids or vitamin D, improves absorption and bioavailability. These combinations could provide synergistic health advantages with a balanced diet to enable a more complete approach to health care.


Quercetin is meticulously formulated to not only promote normal respiratory function but also to bolster a robust and healthy immune system. As a potent antioxidant renowned for its immune-support properties, particularly beneficial during cold and flu season, this compound stands as a reliable ally for year-round immune system health, ensuring resilience during seasonal challenges. By potentially augmenting the body’s natural defenses, quercetin aids in maintaining a strong and vigorous immune system, offering peace of mind amid seasonal variations. Trust in the science behind quercetin to guide your journey toward optimal immune system function and respiratory well-being, all while benefiting from the comprehensive support of this advanced Quercetin formulation. [R]

Where Can I Buy Quercetin for Sale Online?

PureRawz sells the highest purity of Quercetin online!

To ensure good quality as a research chemical efficient supplier, we include reference materials with each product and provide strict quality control standards to be free from potentially harmful levels of contaminant with an independent Certificate of Analysis from a third party for identification, purity, and concentration verification.

We offer free international shipping for orders exceeding the price of $100 and accept multiple payment options such as PayPal and Bitcoin. Our product range consists of liquid, powder, and capsule formulations of TUDA, all of which are equally exceptional quality for our products.


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