What is Quercetin?

Category: Supplements

Most popular types: Jarrow Formulas Quercetin Life Extensions Optimized Quercetin

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See also: Quercetin with Bromelain

Quercetin is a flavonol that constitutes the major bioflavonoid sources in the human diet. The glycoside form is readily available in dietary plants such as teas, onions, apple and buckwheat. It is thought to have antioxidant, anti-inflammatory and anti-allergy properties.

Reported purpose & perceived effectiveness
Purpose Patients Evaluations Perceived Effectiveness
Inflammation 3 0
Parkinson's disease 3 4
General health 2 2
Human immunodeficiency virus (HIV) 2 3
Amyotrophic lateral sclerosis 1 3

Show all 13 reasons taken


  • Major
  • Moderate
  • Slight
  • None
  • Can't tell

Side effects

Side effects as an overall problem

Side effects as an overall problem
Severity Evaluations
Severe 0
Moderate 0
Mild 0
None 19

Commonly reported side effects and conditions associated with Quercetin

Side effect Patients

Dosages

Based on patients currently taking Quercetin

Dosage Patients
4 other daily 1
500 mg daily 1
1,000 mg daily 1

Why patients stopped taking Quercetin

Multiple reasons could be selected

Reason Patients
Did not seem to work 6
Other 6
Doctor's advice 2
Expense 2
Personal research 2
Change in health plan coverage 1
Course of treatment ended 1
See all 14 patients who've stopped taking Quercetin

Duration

Currently taking Quercetin

Duration Patients
5 - 10 years 3

Stopped taking Quercetin

Duration Patients
1 - 6 months 7
6 months - 1 year 4
1 - 2 years 3
2 - 5 years 1
Adherence
Adherence Evaluations
Always 11
Usually 7
Sometimes 0
Never taken as prescribed 1
Burden
Burden Evaluations
Very hard to take 0
Somewhat hard to take 0
A little hard to take 3
Not at all hard to take 16
Cost per month
Cost per month Evaluations
$200+ 0
$100-199 0
$50-99 0
$25-49 5
< $25 7
Not specified 7
Last updated:

3 patient evaluations for Quercetin

Oct 10, 2011 (Started Mar 15, 2011)

  • Effectiveness
    Can't tell (for Parkinson's disease)
  • Side effects
    None
  • Adherence
    Usually
  • Burden
    Not at all hard to take
Dosage: 500 mg Daily

  • 0 helpful marks

Jul 11, 2011 (Started May 05, 2011)

  • Effectiveness
    Slight (for allergies)
  • Side effects
    None
  • Adherence
    Always
  • Burden
    Not at all hard to take
Dosage: 1000 mg Daily
Cost: < $25 monthly

May 7, 2011 (Started May 05, 2011)

  • Effectiveness
    Major (for allergies)
  • Side effects
    None
  • Adherence
    Always
  • Burden
    Not at all hard to take
Dosage: 1000 mg Daily
Cost: < $25 monthly

  • 0 helpful marks

Apr 1, 2011 (Started Apr 28, 2009)

  • Effectiveness
    Slight (for human immunodeficiency virus (HIV))
  • Side effects
    None
  • Adherence
    Usually
  • Burden
    Not at all hard to take
Dosage: 250 mg Daily
Advice & Tips: take w vit c
Cost: < $25 monthly

  • 0 helpful marks
Last updated:
Showing 3 of 3 patient evaluations for Quercetin