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Fénix Methode

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← All supplements
LongevityWeak evidence

Quercetin

Also known as: flavonoid

Quercetin is a flavonoid found naturally in onions, apples, capers and tea. It is studied for antioxidant, anti-inflammatory and antihistamine properties, but human evidence is limited.

What it is used for

  • Immune support and protection under strain – weak evidence
  • Modest blood pressure reduction – limited evidence
  • Relief of seasonal allergies – mainly laboratory evidence

Forms and how they differ

quercetin dihydrate

common form, poorer absorption

quercetin phytosome

with phospholipids, better absorption

isoquercitrin (EMIQ)

glycoside with better absorption

with bromelain or vitamin C

common combinations

When to take it

With a meal containing fat.

Pairs well with

Vitamin C, bromelain.

Do not combine / separate

High doses together with medicines metabolised by the liver.

Watch out for

Not recommended in pregnancy, breastfeeding or kidney disease without consulting your doctor. It may affect some medicines, such as antibiotics or blood thinners – consult your doctor.

Safety

Do not exceed the dose stated on the label.

Practical tip

Red onions and unpeeled apples are among the richest food sources.

Products containing Quercetin 13

Quercetin 700 mghesperidin complex · 700 mg / capsuleAntioxidantImmunityInflammation
QuercetinAntioxidantImmunityInflammation
Quercetin + bromelain+ bromelainAntioxidantImmunityInflammation
Quercetin + ZincblendAntioxidantImmunityInflammationSkin
Quercetin 250 mgextract blend · 250 mg / capsuleAntioxidantImmunityInflammation
Quercetin 500 mgquercetin dihydrate · 500 mg / capsuleAntioxidantImmunityInflammation
Quercetinenzymatically modified isoquercitrinAntioxidantImmunityInflammation
QuercetinphytosomeAntioxidantImmunityInflammation
Quercetin 250 mgliposomal · 250 mg / servingAntioxidantImmunityInflammation
QuercetinAntioxidantImmunityInflammation
Resveratrol + QuercetinblendLongevityAntioxidantHeart & vesselsBlood sugar & metabolism
Vitamin C + Quercetinascorbic acid + quercetinImmunityAntioxidantSkinBlood formation
Vitamin C + Quercetinquercetin phytosomeImmunityAntioxidantSkinBlood formation
How to read the evidence rating
Strong evidenceModerate evidenceWeak evidenceNo evidence

Strong = several good human studies or official recommendations; moderate = promising but smaller studies; weak = few studies or mixed results; no evidence = claims not confirmed.

Combination check

Select the supplements you take and, if relevant, your medicines. We show what interferes, what needs a time gap and what to watch out for.

Check Quercetin with others

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From the same group

Agaricus blazeiWeak evidenceAlpha-lipoic acidModerate evidenceAstaxanthinWeak evidenceCoenzyme Q10Moderate evidenceDNA protection blendNo evidenceErgothioneineWeak evidence
Important notice

This information is educational and does not replace advice from a doctor or pharmacist. We do not give medicine dosages. Supplements are no substitute for a varied diet; if pregnant, breastfeeding, ill or on medication, consult a doctor first.