What is quercetin?

Natural products contain a lot of useful and necessary for the normal functioning of the body substances. And one of them is quercetin. And what is this component, what functions does it perform, where does it occur in nature? Learn this and more.

What it is?

What is quercetin? It is a compound of natural origin, belonging to flavonoids and one of the most famous among them. It is this that gives the characteristic dark green, red or burgundy color to some berries, vegetables, fruits and other plant products.

This component practically does not dissolve in water, but it is completely dissolved in fat and freely penetrates through the lipid membranes of the cells of the human body, which causes activity, beneficial properties and wide application.


What is quercetin for? In the human body, it performs several important functions:

  • First of all, it is worth noting the pronounced antioxidant properties that can neutralize the activity of free radicals that is detrimental to the human body.And it helps to prevent cell degeneration and the development of cancer, as well as to stop the processes of destruction and premature aging of tissues.
  • Quercitin is able to penetrate the nerve fibers and normalize their work, which causes an effect on the nervous system and a mild sedative effect. Also, the component reduces the synthesis of adrenaline and increases stress resistance.
  • The substance has an analgesic effect, so it can be used for joint, muscular, headaches and other pains.
  • Quercetin has anti-inflammatory properties, as it prevents the release of mediators of inflammation, that is, in other words, stops the process, rather than eliminates its effects. Due to this effect, this flavonoid can be used for various diseases of the joints, internal organs.
  • Quercetin inhibits the production of histamine, so it has a pronounced antiallergic effect and stops the development of reactions that started as a result of allergens entering the body.
  • It has been proven that such a substance is capable of increasing the resistance of the organism to attacks of pathogenic microorganisms, even in stressful situations and in the weakening of protective forces.And antiviral activity was especially pronounced, especially with respect to influenza viruses.
  • Quercetin helps to neutralize the effects of radioactive exposure.
  • This flavonoid normalizes and speeds up the regeneration of tissues, ensuring their speedy recovery after damage.
  • There are also diuretic properties, useful for certain diseases of the kidneys or urinary tract.
  • It is useful to consume products rich in quercetin in atherosclerosis, because the substance not only strengthens the vascular walls, but also facilitates their release from cholesterol plaques.
  • There is a cardiotonic effect. In other words, the component strengthens the heart muscle and blood vessels, restores damaged or deformed artery walls, normalizes heart rhythm.

How to get?

Where is quercetin contained? In products of plant origin, having a characteristic green, red or burgundy shade (it is associated with the component in question).

So, in which products can quercetin be found?

  • Red or burgundy berries and fruits, for example, cranberries, elderberries, plums, raspberries, sea buckthorn, mountain ash, red grapes, black currants, some citruses, blueberries, cherries.
  • Vegetables: cabbage and cauliflower, garlic, onions (especially purple and red), pepper.
  • Legumes, in particular beans.
  • Greens, such as spinach, chicory sprouts, leaves of romance lettuce.
  • The fruits of some trees, for example, acorns.
  • Certain cereals, especially buckwheat.
  • Nuts
  • Some varieties of honey, made on the basis of the flowers of tea tree or eucalyptus.
  • Among the drinks it is worth noting the red natural wine and tea.

Means based on quercetin: indications, contraindications and use

In pharmacies, you can find biologically active supplements based on quercetin. Their use is shown in the following cases:

  • radiation injuries;
  • inflammatory diseases of the mucous membranes or their various lesions (ulcerative, erosive, purulent);
  • inflammatory diseases affecting soft tissue;
  • various pain syndromes;
  • chronic glomerulonephritis;
  • ulcerative or erosive damage to the gastrointestinal tract (especially the upper sections);
  • allergy;
  • osteochondrosis of different parts of the spine;
  • diseases of the cardiovascular system, including ischemia, angina pectoris, neurocirculatory dystonia.

The dosage depends on the person's age, as well as on the specific purposes for which quercetin is used. But usually, children over twelve years of age and adults are given 500-100 mg of a substance three times a day. It is necessary to dissolve the granules in water and drink the obtained liquid half an hour before meals. Local application in the form of lotions or applications is also possible (it is also necessary to dissolve the agent in water).

There are some contraindications to the use, these include children's age up to twelve years of age and individual hypersensitivity to such a component. It is also not recommended to take risks during pregnancy (especially in the first trimester) and during breastfeeding.

Possible side effects, among which the most common allergic reactions affecting the skin: urticaria, rash, itching.

Important: Do not take quercetin at the same time as ascorbic acid, as well as with non-steroidal anti-inflammatory drugs. This can cause unexpected and undesirable effects.

Use quercetin correctly to feel its benefits and improve health.

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