ResearchSafe

Quercetin (Quercetin (Flavonoid Senolytic))

Category: Detox & Antioxidant. Status: OTC supplement.

A plant flavonoid best known in biohacking as half of the classic "fisetin/dasatinib + quercetin" senolytic protocols. Also used for its antioxidant, anti-inflammatory, antihistamine, and immune-supportive properties.

How it works

Selectively induces apoptosis in senescent cells by inhibiting pro-survival (SCAP/BCL) pathways, especially when paired with dasatinib. Also scavenges free radicals, inhibits mast-cell histamine release, and modulates NF-kB inflammatory signaling.

Key facts

  • Molecular weight: 302.24 Da
  • Half-life: ~11-28 hours
  • Bioavailability: Low; improved by phytosome/bromelain formulations
  • Storage: Room temperature, protect from light and moisture.

Dosing overview

  • Typical dose: 500-1000 mg per day (daily) or high-dose pulsed (senolytic)
  • Frequency: Daily or intermittent
  • Duration: Ongoing or pulsed
  • Route: Oral capsule

Protocol notes

  • General use: 500-1000 mg/day, often with vitamin C or bromelain for absorption.
  • Senolytic protocols use high pulsed doses (e.g. ~1000-1500 mg) for 2-3 consecutive days, then a multi-week break.
  • Phytosome forms substantially increase absorption at lower doses.

Reported benefits

  • Senolytic (clears senescent cells)
  • Antioxidant and anti-inflammatory
  • Natural antihistamine
  • Cardiovascular support
  • Immune modulation
  • Synergy with fisetin/dasatinib

Possible side effects

  • GI upset at high doses
  • Headache
  • Tingling (very high doses)
  • Drug interactions (CYP inhibition)
  • Kidney caution at extreme doses

Research

  • Dasatinib plus quercetin clears senescent cells (2019): The D+Q senolytic combination reduced senescent cell burden and improved physical function in a first-in-human pilot.
  • Quercetin anti-inflammatory effects (2020): Reduced inflammatory cytokines and oxidative stress markers across multiple human and animal studies.

Community reviews of Quercetin

Rated 5 out of 5 from 3 community reviews by ResearchSafe members.

  • titrate_tina rated it 5/5 - Genuinely effective after 2 months: Been using Quercetin for about 2 months and the results are clear. Not overnight dramatic, but a steady, consistent improvement that became undeniable by the end of the first month. The mechanism makes sense based on what I have read in the literature, and my subjective experience matches the expected timeline. Benefits built gradually and plateaued at a good level. Side effects were minimal to none at the dose I used. Followed proper protocols for sourcing, storage, and administration. Would recommend to others who have done their research and have realistic expectations.
  • wellness_wade rated it 5/5 - Noticed clear benefits within weeks: Added Quercetin to my protocol about 2 weeks ago and it has earned its place. The benefits became noticeable around week 2-3 and have been consistent since. What I appreciate about this compound is the predictability. It does what the research suggests it should do, at roughly the timeline you would expect. No surprises, no dramatic swings, just steady improvement. No notable side effects to report at my dose. Sourcing is always the challenge with research compounds, insist on third-party testing. Storage and reconstitution per standard protocols. Plan to continue.
  • longevity_anna rated it 5/5 - Worth adding to the protocol: Quercetin has been a worthwhile addition. I am data-driven and tracked relevant markers before, during, and after. The improvement is measurable and correlates with the intervention timeline. What sets this apart from some compounds I have tried is the consistency. Benefits did not fluctuate wildly or disappear. They built up and maintained. That gives me confidence in the mechanism. Tolerance has been excellent. Nothing in my bloodwork or subjective experience raised any flags. This is the kind of compound that does its job quietly without causing problems. Exactly what you want.

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Community discussions about Quercetin

Research and educational reference only. Not medical advice.