May offer mild antioxidant and anti-inflammatory support, but effects are subtle.
Effective Dose
250-500mg
Onset
2-4 weeks
Cost
Mid-range
Cycle
Not necessary to cycle.
Why not higher?
7 things you need to know
What it does
May offer mild antioxidant and anti-inflammatory support, but effects are subtle.
Worth it?
4/10. Quercetin shows promise as an antioxidant and anti-inflammatory agent, but the evidence for noticeable benefits at typical supplement doses is limited. Bioavailability issues also hinder its effectiveness.
How much to take
250-500mg
Price
Moderate ($15-30/month)
How fast it works
Takes 2 to 4 weeks to notice
Safety
Check if: may interact with certain medications, possible gastrointestinal discomfort at high doses
What people say
Most users don't report any immediate or strong subjective effects. Some may experience mild improvements in allergy symptoms or reduced inflammation over time.
Found abundantly in onions, apples, and berries; its name comes from 'quercetum' (oak forest).
"Most users don't report any immediate or strong subjective effects. Some may experience mild improvements in allergy symptoms or reduced inflammation over time."
Research backing for this ingredient
Some evidence, more research needed
55+
Yes
Mixed opinions in scientific community
Reduces blood pressure in hypertensive individuals
Meta-analysis of 7 RCTs
Lowers inflammatory markers (CRP)
Meta-analysis of 15 RCTs
Reduces upper respiratory infection rates in athletes
Several small RCTs (mixed results)
"While quercetin has demonstrated antioxidant and anti-inflammatory properties in vitro and in some clinical studies, its poor bioavailability limits its effectiveness at typical supplement doses. More research is needed to confirm its benefits in humans."
Quercetin is a flavonoid with antioxidant and anti-inflammatory properties. Supplementation may help reduce inflammation and support immune function, but its bioavailability is limited.
Products below minimum dose are likely ineffective
When
Any time
How
250-500mg
Food
Take with food to enhance absorption.
Consistent daily intake over several weeks may be needed to observe any noticeable effects.
Not necessary to cycle.
Check for specific interactions.
Quercetin is categorized as a antioxidant.
Scientific consensus score: 5/10.
Evidence quality: WEAK.
Add Quercetin to your stack analyzer or compare it with other ingredients.
Not medical advice. Always consult a healthcare provider.