All About Other Nutrients

Quercetin
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Why quercetin is good for you

Quercetin is a flavonoid (or bioflavonoid - these names are used interchangeably) which is found in many fruits and vegetables such as strawberries, apples, grapes and onions.

Quercetin is important as it serves as a building block for other flavonoids to function effectively.

Quercetin acts as an effective antihistamine, by reducing allergy symptoms as well as reducing inflammation.

Quercetin has powerful antioxidant properties and works to protect the body from free radical damage which can damage DNA and cause ageing, heart disease and cancer.

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Important quercetin facts

  • Quercetin has renowned antioxidant properties
  • Quercetin is one half of the rutin molecule and is the more active antioxidant component
  • Approximately 70% of the total flavonoid intake from food comes from quercetin

 

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Types of quercetin supplementation

Quercetin is available in the following forms:

 

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Quercetin supplementation checklist

 

Quercetin and health

  • Sinusitis - quercetin increases the effectiveness and activity of vitamin C in the body and can also inhibits the inflammatory processes involved in sinusitis by blocking the release of histamine, which can help to improve symptoms of sinusitis

People who wish to take a quercetin supplement should talk to a medical professional BEFORE taking it.

CURRENT RESEARCH

People who wish to take a quercetin supplement should talk to a medical professional BEFORE taking it.

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Quercetin in food

Quercetin is found mainly in the following foods:

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How to take quercetin

Dosage of quercetin depends on the condition that is being treat. A medical doctor and/or alternative health care provider can advise on individual cases - this information is provided as a guide only:

lifestage age Amount (per day)
INFANTS 0-12mths Not recommended
CHILDREN 1-8yrs Seek medical advice before taking it
CHILDREN 9-18yrs
Seek medical advice before taking it
ADULTS 19-50yrs
Allergy/Sinusitis/Hayfever
50-200mg 3 times a day
SENIORS 51+yrs Allergy/Sinusitis/Hayfever
50-200mg 3 times a day
PREGNANT   Not recommended
LACTATING   Not recommended


People who wish to take an quercetin supplement should talk to a medical professional BEFORE taking it.

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Quercetin works best with

 

Overdosage, toxicity and cautions for quercetin

There are no known toxicities, adverse effects, overdosage or other side effects for flavonoids.

CAUTIONS


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Last reviewed: 1 January 2010 || Last updated: 1 January 2010

 

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references

 

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NOTE: Mega doses of vitamins, minerals or other nutrients cannot cure illnesses and in fact can be very dangerous and produce toxic side effects and interfere with medicine you are taking. Always ensure you consult your doctor before taking any type of nutrient supplement.
Disclaimer: This guide is not intended to be used for diagnostic or prescriptive purposes. For any treatment or diagnosis of illness, please see your doctor.