Quercetin

Occurrence and Applications

Quercetin is a bioflavonoid naturally found in various fruits and vegetables. It is widely researched and is one of the most studied flavonoids.

Origin and Sources

Quercetin is present in a variety of plant-based foods, including:

  • Apples
  • Onions
  • Berries
  • Green tea
  • Grapes and red wine
  • Cabbage varieties

The concentration of quercetin varies depending on the species, growing conditions, and processing of the foods.

Combination with Other Bioflavonoids

Quercetin is often combined with other bioflavonoids, such as:

  • Resveratrol
  • Green tea catechins
  • Apigenin

These combinations are studied for their interactions and applications.

Usage and Applications

Quercetin is consumed as part of a balanced diet and is also available as a supplement. The dosage and form may vary depending on the product and its intended use.

Products with Quercetin

Product Form Standard dosage
Quercetin dihydrate 800 mg per 2 capsules
Quercetin dihydrate 800 mg per 2 capsules
Quercetin (as Quercetin Dihydrate) 255 mg per 4 capsules
Quercetin 250 mg per 1 capsules
Quercetin phytosome (Japanese sophora flower bud concentrate, phosphatidylcholine complex (from sunflower)) 15 mg per 1 tablets
Quercetin (from Japanese sophora flower bud concentrate) 5 mg per 1 tablets
Quercetin from Japanese sophora concentrate (flower bud) 3 mg per 1 capsules
Quercetin (as quercetin dihydrate) 2.5 mg per 4 capsules
Do Not Age Pure Quercetin (60 capsules)
Product
Form Quercetin dihydrate
Standard dosage 800 mg per 2 capsules
Do Not Age Pure Quercetin (366 capsules)
Product
Form Quercetin dihydrate
Standard dosage 800 mg per 2 capsules
Bulletproof Superfood Antioxidants
Product
Form Quercetin (as Quercetin Dihydrate)
Standard dosage 255 mg per 4 capsules
Life Extension Optimized Quercetin
Product
Form Quercetin
Standard dosage 250 mg per 1 capsules
Life Extension Vitamine C and Quercetin Phytosome
Product
Form Quercetin phytosome (Japanese sophora flower bud concentrate, phosphatidylcholine complex (from sunflower))
Standard dosage 15 mg per 1 tablets
Life Extension Vitamine C and Quercetin Phytosome
Product
Form Quercetin (from Japanese sophora flower bud concentrate)
Standard dosage 5 mg per 1 tablets
Life Extension Optimized Resveratrol Elite
Product
Form Quercetin from Japanese sophora concentrate (flower bud)
Standard dosage 3 mg per 1 capsules
Qualia Qualia Night
Product
Form Quercetin (as quercetin dihydrate)
Standard dosage 2.5 mg per 4 capsules