What are other common names?

  • 2-(3,4-Dihydroxyphenyl)-3,5,7-trihydroxy-4H-1-benzopyran-4-one
  • 3, 3′, 4′, 5, 7-pentahydroxy-2-phenylchromen-4-one
  • 3,3',4'5,7-Penthydroxyflavone
  • Bioflavonoid
  • Bioflavonoid Complex
  • Bioflavonoid Concentrate
  • Bioflavonoid Extract
  • Bioflavonoids
  • Bioflavonoïde
  • Bioflavonoïde de Citron
  • Bioflavonoïdes de Citron
  • Citrus Bioflavones
  • Citrus Bioflavonoid
  • Citrus Bioflavonoid Extract
  • Citrus Bioflavonoids
  • Citrus Flavones
  • Citrus Flavonoids
  • Complexe de Bioflavonoïde
  • Concentré de Bioflavonoïde
  • Extrait de Bioflavonoïde
  • Extrait de Bioflavonoïdes de Citron
  • Flavones de Citron
  • Flavonoid
  • Flavonoids
  • Flavonol
  • Flavonoïde
  • Meletin
  • Mélétine
  • Pentahydroxyflavone
  • Quercetin Dihydrate
  • Quercetina
  • Quercetine
  • Quercétine
  • Sophretin
  • Sophrétine
  • Vitamin P

What is this product used for?

Quercetin is used by some people to lower blood pressure. Others believe it helps with cancer and may improve social skills in children with autism. Quercetin is used by some men to help with prostate problems.

What are the precautions when taking this product?

  • Always check with your doctor before you use a natural product. Some products may not mix well with drugs or other natural products.
  • Avoid the use of quercetin while taking digoxin.
  • Take extra care if you are taking drugs to thin your blood. These are drugs like warfarin (Coumadin).
  • Do not use this product if you are pregnant or plan to become pregnant soon. Use birth control you can trust while taking this product.
  • Do not use this product if you are breastfeeding.
  • Take extra care and check with your doctor if you have:
    • Heart problems
    • High blood pressure
    • Liver problems
    • Infection requiring antibiotics

What should I watch for?

  • Upset stomach
  • Tingling in the arms or legs

When do I need to call the doctor?

  • Signs of a very bad reaction. These include wheezing; chest tightness; fever; itching; bad cough; blue skin color; seizures; or swelling of face, lips, tongue, or throat. Go to the ER right away.
  • Very bad throwing up
  • Very bad headache