Quercetin

The overall rating for quercetin is 1.6 out of 3 meaning there is some evidence that this supplement does some (not all) of what it claims. Using this supplement may lead to some improvements.

1. Simple Report
2. Detailed Report
3. Overall Effectiveness Rating
4. Research Rating
5. Products Containing Quercetin
6. Claim Ratings
7. References

• Supplement: Quercetin
• Supplement Category: plant and food extracts
• Number of Products Containing Quercetin: 61
• Effectiveness Rating: 1.6 out of 3
• Research Rating: 43 (above 80 indicates sufficient research)
• Number of Studies: 15
• Number of Claims: 16

Overall Effectiveness Rating

The overall effectiveness rating for quercetin is 1.6 out of 3. This rating means the evidence is mixed on the supplement's ability to deliver positive results. While some of the research supports its use, other evidence does not. Using this supplement may lead to positive results. Note, this effectiveness rating is for quercetin as a whole; there are also individual ratings for the claims below.

Read more: What is the effectiveness rating?

Research Rating for Quercetin

There are 15 studies in the database on quercetin; the research rating is 43. A score above 80 means the effectiveness rating for this supplement is reliable. A score under 80 means there is insufficient evidence to ensure a reliable effectiveness rating. Note, this research rating is for quercetin as a whole; there are also individual ratings for the claims below.

Read more: What is the research rating?

Products Containing Quercetin

Products Names	Amount of Quercetin
Jocko Joint Warfare	100mg
MILLECOR Joint Support	25mg
Hall of Fame	25mg
Platinum Turmeric Joint Support Plus	8mg
REM 8.0	Amount not listed.
Full list of all 61 products containing Quercetin.

Claim Ratings

The overall ratings above are an average of the individual claim ratings below. Individual claims may have higher or lower ratings compared to the supplement's overall rating. For example, some supplements may have excellent backing for one claim, but be completely useless for another. Click on a claim below for more information.

Body Composition (weight, muscle, body fat) Claims	Effectiveness Rating	Research Rating
decrease body fat
increase fat burning
increase muscle mass

Energy Balance (calories in & calories out) Claims	Effectiveness Rating	Research Rating
increase energy expenditure

Performance Claims	Effectiveness Rating	Research Rating
improve cardiovascular endurance
improve cycling performance
improve running performance
improve sprint performance
decrease fatigue

Cardiovascular Health Claims	Effectiveness Rating	Research Rating
lower blood pressure
lower LDL (bad) cholesterol levels
increase HDL (good) cholesterol levels
lower total cholesterol levels

Recovery Claims	Effectiveness Rating	Research Rating
improve recovery
reduce muscle damage
reduce muscle soreness

References

Title of Study
Dietary antioxidant supplementation combined with quercetin improves cycling time trial performance
Does quercetin and vitamin C improve exercise performance, muscle damage, and body composition in male athletes?
Effect of eight weeks of quercetin supplementation on exercise performance, muscle damage and body muscle in male badminton players
Effect of quercetin supplementation on maximal oxygen uptake in men and women
Effect of quercetin supplementation on repeated-sprint performance, xanthine oxidase activity, and inflammation
Effects of a quercetin-rich onion skin extract on 24 h ambulatory blood pressure and endothelial function in overweight-to-obese patients with (pre-)hypertension: a randomised double-blinded placebo-controlled cross-over trial
Effects of Quercetin Supplementation on Markers of Muscle Damage and Inflammation after Eccentric Exercise
Long-term quercetin supplementation reduces lipid peroxidation but does not improve performance in endurance runners
Quercetin and vitamin C supplementation: effects on lipid profile and muscle damage in male athletes
Quercetin does not affect rating of perceived exertion in athletes during the Western States endurance run
Quercetin reduces systolic blood pressure and plasma oxidised low-density lipoprotein concentrations in overweight subjects with a high-cardiovascular disease risk phenotype: a double-blinded, placebo-controlled cross-over study
Quercetin supplementation does not attenuate exercise performance and body composition in young female swimmers
Serum lipid and blood pressure responses to quercetin vary in overweight patients by apolipoprotein E genotype
The dietary flavonoid quercetin increases VO(2max) and endurance capacity
The effects of quercetin supplementation on body composition, exercise performance and muscle damage indices in athletes