Quercetin Side Effects

Generic name: bioflavonoids

Medically reviewed by Drugs.com. Last updated on Jan 14, 2024.

Note: This document contains side effect information about bioflavonoids. Some dosage forms listed on this page may not apply to the brand name Quercetin.

Applies to bioflavonoids: oral capsule.

Other side effects of Quercetin

Some side effects of bioflavonoids (the active ingredient contained in Quercetin) may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects.

Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

More common

• Blurred vision
• dizziness
• dull ache or feeling of pressure or heaviness in legs
• fluid accumulation in the knee
• headache
• itching skin near damaged veins
• nervousness
• pounding in the ears
• red or scaling skin
• slow or fast heartbeat
• swollen feet and ankles

Frequently asked questions

• What is Quercetin and what are its health benefits?
• What are antioxidants and should you take supplements?

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Some side effects may not be reported. You may report them to the FDA.

Medical Disclaimer