Top 9 Best Quercetin Supplements (2026)
01 · Best Overall✓ Label verified · Supplement Facts read Sep 7, 2026Best Overall: Healthy Origins Quercetin Phytosome (Quercefit)
The only product here built on Quercefit — the exact licensed Indena raw material used in the published human quercetin trials — at a real 500 mg phytosome dose and a sane per-serving cost.
~$40~$0.33 / capsule
Why it wins: all five scores, pros & cons, full label
- Uses the actual raw material studied in human quercetin RCTs, not a generic 'phytosome'
- Full 500 mg phytosome dose at roughly a third the cost per gram of Thorne
- 120-count bottle is a 2-4 month supply depending on protocol
- Vegan, non-GMO, gluten-free with a named, traceable ingredient
- The headline '50X absorption' figure comes from manufacturer pharmacokinetics, not clinical immune outcomes
- Even with elite absorption, human immune/allergy benefit remains modest and mostly studied in COVID-adjunct and exercise settings
- Standardization
- Licensed Quercefit (Indena), the clinically-studied material
- Cost per dose
- ~$0.33 per capsule
- Dose
- 500 mg Quercefit phytosome per capsule
- Form
- Quercefit phytosome (lecithin-bound), veggie capsule
- Count
- 120 veggie capsules
- Testing
- Non-GMO, vegan, gluten-free; branded ingredient with published PK
Our take — This is the rare supplement where the premium format is actually backed by the same branded ingredient used in the human literature, and it's priced sensibly for a 500 mg dose. It wins not because it 'cures' anything — it doesn't — but because if you're going to take quercetin at all, absorbed-and-studied beats cheap-and-inert. Manage expectations: better blood levels, still-modest proven benefit.
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09Who Wins Which Aspect
Sorted by overall SAC Product Score™ — the official ranking.
| # | Pick | Score | Form & Bioavailability35% | Third-Party Testing & Purity20% | Dose vs Clinical Range20% | Tolerability & Safety10% | Value15% | Cost Per Dose | Buy |
|---|---|---|---|---|---|---|---|---|---|
| 01 | | 8.4 | 9.01 | 8.02 | 8.51 | 8.21 | 7.73 | ~$0.33 / capsule | Check price |
| Uses the actual raw material studied in human quercetin RCTs, not a generic 'phytosome'The headline '50X absorption' figure comes from manufacturer pharmacokinetics, not clinical immune outcomes | |||||||||
| 02 | | 8.1 | 8.82 | 9.01 | 7.0 | 8.21 | 6.4 | ~$0.48 / capsule | Check price |
| Best-in-class manufacturing and testing pedigree, trusted by clinicians and pro sportsHighest cost per gram in the group and only 60 capsules | |||||||||
| 03 | | 7.2 | 6.0 | 7.23 | 8.23 | 7.52 | 8.41 | ~$0.19 / 2-capsule serving | Check price |
| Dose sits squarely in the human clinical range (800 mg)Plain quercetin is poorly absorbed, so blood levels lag the phytosomes despite the big number | |||||||||
| 04 | | 6.8 | 5.5 | 6.6 | 8.23 | 7.23 | 8.22 | ~$0.28 / 2-capsule serving | Check price |
| Highest label quercetin dose in the plain-combo category (880 mg)Same poor-absorption ceiling as all plain quercetin — the high number partly compensates for low uptake | |||||||||
| 05 | | 6.6 | 5.3 | 6.6 | 8.32 | 7.0 | 6.8 | ~$0.42 / 2-capsule serving | Check price |
| Highest per-serving quercetin (1,000 mg) and bromelain (200 mg) in the setStill an unenhanced quercetin, so absorption stays low regardless of the big label figure | |||||||||
| 06 | | 6.3 | 6.63 | 6.4 | 6.4 | 7.0 | 4.9 | ~$0.57 / softgel | Check price |
| Lipid (MCT + lecithin) carrier plausibly aids absorption of fat-soluble quercetinThe 'better absorption' angle is a formulation rationale, not phytosome-grade clinical data | |||||||||
| 07 | | 5.7 | 6.5 | 6.4 | 3.0 | 7.23 | 5.5 | ~$0.27 / capsule | Check price |
| Highly-absorbable phytosome delivery format~15 mg absolute dose is a fraction of the 500-1,000 mg used in human trials, even after the absorption claim | |||||||||
| 08 | | 5.3 | 3.2 | 6.0 | 7.6 | 6.8 | 5.2 | ~$0.32 / 2-capsule serving | Check price |
| High stated purity (95%+) with third-party testingNo absorption aid whatsoever — the poorest bioavailability in the entire group | |||||||||
| 09 | | 4.8 | 5.5 | 3.5 | 4.0 | 7.0 | 4.5 | ~$0.27 / capsule | Check price |
| Three complementary actives (quercetin + bromelain + vitamin C) in one pillModest ~500 mg quercetin dose split among three ingredients | |||||||||
The Other 8, Ranked
- 02
Cleanest Label: Thorne Quercetin Phytosome
8.1SAC Score™The clinician-and-pro-sports favorite: a sunflower-lecithin phytosome with roughly 20x absorption over plain quercetin and Thorne's obsessive testing pedigree — you just pay for it.
StrongestThird-Party Testing & Purity9.01WeakestValue6.4- Standardization
- Phytosome complex weight (not 250 mg free quercetin)
- Cost per dose
- ~$0.48 per capsule (label suggests 1 cap 2-3x daily)
- Dose
- 250 mg quercetin phytosome per capsule
All five scores, pros & cons, full label
What We Like- Best-in-class manufacturing and testing pedigree, trusted by clinicians and pro sports
- Phytosome delivery cited at ~20x the absorption of plain quercetin
- Clean, allergen-free label with no fillers or absorption gimmicks
- Excellent tolerability profile
What You Live With- Highest cost per gram in the group and only 60 capsules
- 250 mg is phytosome-complex weight, not 250 mg of free quercetin, and label dosing of 2-3x daily burns the bottle fast
- Form
- Phytosome (Sophora japonica + sunflower phospholipid), capsule
- Count
- 60 capsules
- Testing
- Manufactured in NSF-certified/Thorne facility; gluten/dairy/soy-free
Our take — If you want the most trustworthy label on the shelf and cost is no object, Thorne is the pick. It loses the top spot only because the dose runs low and the price-per-gram is steep, and because Healthy Origins delivers the specific ingredient with actual human trials. A superb product for absorption purists who'll pay for provenance.
- 03
Best Value: NOW Foods Quercetin with Bromelain
7.2SAC Score™The default mainstream pick: the classic quercetin-plus-bromelain allergy combo at a clinical-range 800 mg dose, 120 servings deep, from a GMP-audited brand you can find anywhere.
StrongestValue8.41WeakestForm & Bioavailability6.0- Standardization
- Standard (non-phytosome) quercetin
- Cost per dose
- ~$0.19 per 2-capsule serving
- Dose
- 800 mg quercetin + 165 mg bromelain per 2-cap serving
All five scores, pros & cons, full label
What We Like- Dose sits squarely in the human clinical range (800 mg)
- Enormous 120-serving value from a reputable, widely audited brand
- Bromelain is the traditional allergy/sinus pairing
- Cheapest cost per serving of any pick here
What You Live With- Plain quercetin is poorly absorbed, so blood levels lag the phytosomes despite the big number
- Bromelain 'synergy' rests on a plausible but thin human evidence base
- Form
- Plain quercetin + bromelain, veg capsule
- Count
- 240 veg capsules (120 servings)
- Testing
- UL/NPA GMP audited, Non-GMO, vegan
Our take — For most people asking 'which quercetin should I just buy,' this is the sensible answer: real dose, real brand, unbeatable per-serving cost. It ranks below the phytosomes purely on absorption, which is the axis that matters most. A smart value buy as long as you understand you're trading uptake for price and quantity.
- 04
Best Cost-Per-Gram: Nutricost Quercetin with Bromelain
6.8SAC Score™The budget workhorse that still gets third-party tested: 880 mg of quercetin plus bromelain per serving for less than most competitors, with a COA behind it.
StrongestDose vs Clinical Range8.23WeakestForm & Bioavailability5.5- Standardization
- Standard (non-phytosome) quercetin
- Cost per dose
- ~$0.28 per 2-capsule serving
- Dose
- 880 mg quercetin + 165 mg bromelain per 2-cap serving
All five scores, pros & cons, full label
What We Like- Highest label quercetin dose in the plain-combo category (880 mg)
- Third-party tested despite an aggressively budget price
- Bromelain co-factor included at no premium
- Excellent cost per gram
What You Live With- Same poor-absorption ceiling as all plain quercetin — the high number partly compensates for low uptake
- Half the servings of NOW at a higher per-serving cost
- Form
- Plain quercetin + bromelain, veg capsule
- Count
- 120 capsules (60 servings)
- Testing
- Third-party tested, GMP/FDA-registered facility, non-GMO, gluten-free
Our take — Nutricost is the pick if you want the highest plain-quercetin dose per dollar with a lab test attached. It edges out on dose but loses value to NOW's massive count and the phytosomes on absorption. A perfectly respectable budget option, so long as you're not paying for milligrams you won't absorb.
- 05
Highest Purity Combo: Double Wood Quercetin with Bromelain
6.6SAC Score™The heaviest hitter in the bromelain camp: a full 1,000 mg of 96%-purity quercetin plus the largest bromelain pairing here (200 mg), from a transparent single-brand seller that publishes COAs.
StrongestDose vs Clinical Range8.32WeakestForm & Bioavailability5.3- Standardization
- Stated 96% purity (above typical ~70-90% budget extracts)
- Cost per dose
- ~$0.42 per 2-capsule serving
- Dose
- 1,000 mg quercetin + 200 mg bromelain per 2-cap serving
All five scores, pros & cons, full label
What We Like- Highest per-serving quercetin (1,000 mg) and bromelain (200 mg) in the set
- States 96% purity, above the budget-extract norm
- Transparent brand that publishes certificates of analysis
- Solidly in the upper clinical dose range
What You Live With- Still an unenhanced quercetin, so absorption stays low regardless of the big label figure
- The 1,000 mg is a 2-capsule serving, not per capsule — easy to misread
- Form
- 96% purified quercetin + bromelain, capsule
- Count
- 120 capsules (60 servings)
- Testing
- Third-party tested with published COAs, vegan-safe, gluten-free
Our take — Double Wood is for the dose-and-transparency buyer who wants the biggest plain-quercetin plus bromelain serving with COAs to back it. Purity and dose are strong, but purity is not bioavailability, which is why it sits mid-pack. A dependable, honest budget-premium combo that simply can't out-absorb a phytosome.
- 06
Best Softgel: Sports Research Quercetin with Coconut MCT & Sunflower Lecithin
6.3SAC Score™A middle path between plain powder and true phytosome: 500 mg of quercetin suspended in MCT oil and sunflower lecithin in an easy-swallow softgel, Non-GMO Project Verified.
StrongestTolerability & Safety7.0WeakestValue4.9- Standardization
- Lipid-carrier formulation (not a standardized phytosome)
- Cost per dose
- ~$0.57 per softgel
- Dose
- 500 mg quercetin per softgel
All five scores, pros & cons, full label
What We Like- Lipid (MCT + lecithin) carrier plausibly aids absorption of fat-soluble quercetin
- Convenient single-softgel 500 mg dose, easy to swallow
- Reputable consumer brand with Non-GMO Project verification
- No megadose padding — a clean, moderate serving
What You Live With- The 'better absorption' angle is a formulation rationale, not phytosome-grade clinical data
- Only 30 softgels makes the real cost-per-day the highest here
- Form
- Quercetin in MCT oil + sunflower lecithin, liquid softgel
- Count
- 30 liquid softgels
- Testing
- Non-GMO Project Verified, gluten-free
Our take — The softgel format and lipid carrier put this a notch above plain isolates on absorption, and it's genuinely pleasant to take. But a 30-count bottle at this price is poor value, and the MCT rationale doesn't reach phytosome evidence. A fine choice if you value convenience and Non-GMO verification over cost or maximum uptake.
- 07
Micro-Dose Add-On: Life Extension Bio-Quercetin
5.7SAC Score™A phytosome-format quercetin with a big absorption claim — but at only ~15 mg per capsule, it's a co-factor sprinkle, not a standalone immune dose.
StrongestTolerability & Safety7.23WeakestDose vs Clinical Range3.0- Standardization
- Galactomannan-quercetin phytosome complex
- Cost per dose
- ~$0.27 per capsule
- Dose
- ~15 mg quercetin phytosome (62x absorption claim)
All five scores, pros & cons, full label
What We Like- Highly-absorbable phytosome delivery format
- Cheapest sticker price in the group
- Excellent tolerability at such a low dose
- Sensible as a companion to Life Extension's vitamin C
What You Live With- ~15 mg absolute dose is a fraction of the 500-1,000 mg used in human trials, even after the absorption claim
- Only 30 capsules, and the value collapses once you account for how little quercetin you actually get
- Form
- Phytosome (galactomannan/quercetin complex), veggie capsule
- Count
- 30 capsules
- Testing
- Non-GMO, gluten-free, vegetarian
Our take — The phytosome format is legitimately good, but 15 mg is a rounding error next to the clinical range — the entire product leans on a 62x marketing figure to justify the dose. It's a fine little add-on if you already take a stack and want a trace of well-absorbed quercetin, but it can't stand alone as an immune supplement. Format smart, dose too small.
- 08
Purity ≠ Absorption: Toniiq Ultra High Purity Quercetin
5.3SAC Score™A standardized 95%+ pure quercetin isolate at 1,000 mg — the cleanest raw material here, and also the single worst-absorbed, because it has nothing to help it get into your blood.
StrongestDose vs Clinical Range7.6WeakestForm & Bioavailability3.2- Standardization
- 95%+ purity, no bromelain/vitamin C/phytosome
- Cost per dose
- ~$0.32 per 2-capsule serving
- Dose
- 1,000 mg quercetin per 2-cap serving
All five scores, pros & cons, full label
What We Like- High stated purity (95%+) with third-party testing
- Full 1,000 mg dose in the upper clinical range
- No fillers or additives — a true isolate
- Reasonable price per gram
What You Live With- No absorption aid whatsoever — the poorest bioavailability in the entire group
- Purity is marketed as if it were potency; a pure compound you don't absorb is still wasted
- Form
- Standardized plain quercetin isolate (95%+), capsule
- Count
- 120 capsules (60 servings)
- Testing
- Third-party tested, non-GMO
Our take — Toniiq nails purity and dose, which is exactly why it's instructive that it finishes last: on the axis that matters most, plain isolate with no delivery help absorbs the worst. It's a clean product built around the wrong headline metric. Choose it only if you specifically want additive-free raw quercetin and understand you're accepting minimal uptake.
- 09
Classic 3-in-1 Blend: Solaray QBC Plex (Quercetin, Bromelain & Vitamin C)
4.8SAC Score™The old-school allergy-season formula: quercetin, bromelain, and vitamin C in one capsule, a combination that's been on shelves for decades on a coherent antioxidant rationale.
StrongestTolerability & Safety7.0WeakestThird-Party Testing & Purity3.5- Standardization
- Standard quercetin in a three-active blend
- Cost per dose
- ~$0.27 per capsule
- Dose
- ~500 mg quercetin + bromelain + vitamin C per serving
All five scores, pros & cons, full label
What We Like- Three complementary actives (quercetin + bromelain + vitamin C) in one pill
- Long-standing, well-known 'QBC' formula with a loyal following
- Vitamin C adds a genuine antioxidant co-factor
- Reasonable per-capsule cost and a satisfaction guarantee
What You Live With- Modest ~500 mg quercetin dose split among three ingredients
- The vitamin-C-boosts-quercetin-absorption idea is mechanistic/animal-based, not established in humans
- Form
- Quercetin + bromelain + vitamin C blend, veg capsule
- Count
- 60 veg capsules
- Testing
- Vegan, lab verified, 60-day guarantee
Our take — QBC Plex is a convenient, familiar all-in-one for allergy season, and the vitamin C is a nice-to-have. It ranks here because the quercetin dose is modest, it's still plain (poorly absorbed) quercetin, and the vitamin C absorption claim is not proven in people. Fine as a low-commitment blend, not a high-potency choice.
Quercetin In Two Short Lessons
Buy a phytosome form.
Plain quercetin has very low oral bioavailability. Lecithin-based phytosome delivery raised plasma quercetin roughly 20-fold in pharmacokinetic testing.
Compare delivered dose, not label milligrams.
A 250-500 mg phytosome can out-deliver a 1,000 mg plain capsule. Form and bioavailability carry 35% of our score.
Treat it as a low-risk adjunct.
The strongest human trials are small and open-label. Broad reductions in colds or allergy symptoms in the general population have not been established.
Riva et al., Eur J Drug Metab Pharmacokinet 2019 (phytosome PK); Di Pierro et al., Int J Gen Med 2021 (Quercefit COVID adjunct); Heinz et al., Pharmacol Res 2010 (URTI community trial); Mlcek et al., Molecules 2016 (anti-allergic mechanism review).
Quercetin's problem is not potency in a test tube — it's getting the molecule into your blood. Plain quercetin has notoriously low oral bioavailability, so a 1,000 mg label can deliver less usable compound than a well-formulated 250 mg phytosome. We therefore weight delivery form and bioavailability the heaviest single axis, then layer on independent testing, dose relative to what was actually used in human trials, tolerability, and value. Price is only a tie-breaker (15%); it can never buy a product to the top. Every product here is a real, purchasable SKU scored on the same five axes, which sum to 100%.
Form & Bioavailability · 35%
The decisive axis. Phytosome/Quercefit (lecithin-bound) formats show roughly 20x higher absorption in pharmacokinetic studies; lipid carriers (MCT/lecithin) help modestly; plain isolate — even at 95%+ purity — absorbs poorly. Bromelain and vitamin C 'absorption synergy' claims are treated as weak because human data is thin.
Third-Party Testing & Purity · 20%
Rewards independent lab verification, GMP/NSF facility standards, and published purity/standardization. A clean COA and named raw material (e.g., licensed Quercefit) beat an unverified 'ultra pure' badge.
Dose vs Clinical Range · 20%
Human trials typically used 500-1,000 mg/day of standard quercetin (or ~250-500 mg phytosome). We reward products landing in that window and penalize both micro-doses that lean entirely on absorption claims and mega-doses padding for poor uptake.
Tolerability & Safety · 10%
Quercetin is generally well tolerated short-term; we note GI upset at high doses, theoretical drug interactions (CYP450, quinolone antibiotics, blood thinners), and lack of long-term high-dose safety data. Simpler, cleaner formulas score higher.
Value · 15%
Cost per usable serving, not cost per milligram — a cheap plain isolate that doesn't absorb is not a bargain. Tie-breaker only; never a route to #1.
The bottom line
If you want the best absorbed-and-studied option, buy Healthy Origins Quercefit
It's the only pick built on the exact licensed raw material used in the human quercetin trials, at a real 500 mg phytosome dose and a fair per-capsule cost. When bioavailability is the whole game, an absorbed, trial-backed ingredient beats a cheap isolate — full stop.
If provenance and purity matter more than price, buy Thorne
Thorne's phytosome absorbs like the winner and carries the cleanest, most rigorously tested label on the shelf. It drops to #2 only on low dose and steep cost per gram — for absorption purists who'll pay for pedigree, it's the safest pick.
If you just want a sensible, cheap, real dose, buy NOW Foods
The classic quercetin-plus-bromelain combo lands in the clinical dose range at the lowest cost per serving here, from an audited mainstream brand. You trade absorption for value and quantity — a fair trade for most casual users who won't commit to a phytosome.
Quick Answers
What is the best quercetin pick overall?
Healthy Origins Quercetin Phytosome (Quercefit) by Healthy Origins is our #1 pick (SAC score 8.4/10). This is the rare supplement where the premium format is actually backed by the same branded ingredient used in the human literature, and it's priced sensibly for a 500 mg dose. It wins not because it 'cures' anything — it doesn't — but because if you're going to take quercetin at all, absorbed-and-studied beats cheap-and-inert. Manage expectations: better blood levels, still-modest proven benefit.
What is the best budget option?
NOW Foods Quercetin with Bromelain at ~$23. For most people asking 'which quercetin should I just buy,' this is the sensible answer: real dose, real brand, unbeatable per-serving cost. It ranks below the phytosomes purely on absorption, which is the axis that matters most. A smart value buy as long as you understand you're trading uptake for price and quantity.
How much do these picks cost?
Across our ranked picks, prices run from about $8 to $40 — exact price and cost per serving are listed on every pick card above.
How were these picks ranked?
Quercetin's problem is not potency in a test tube — it's getting the molecule into your blood. Plain quercetin has notoriously low oral bioavailability, so a 1,000 mg label can deliver less usable compound than a well-formulated 250 mg phytosome. We therefore weight delivery form and bioavailability the heaviest single axis, then layer on independent testing, dose relative to what was actually used in human trials, tolerability, and value. Price is only a tie-breaker (15%); it can never buy a product to the top. Every product here is a real, purchasable SKU scored on the same five axes, which sum to 100%.
Every Claim Ranked Above Traces Back To One Of These
6 peer-reviewed sources, each linked to PubMed
- [1] Riva A, Ronchi M, Petrangolini G, Bosisio S, Allegrini P. Improved Oral Absorption of Quercetin from Quercetin Phytosome®, a New Delivery System Based on Food Grade Lecithin. Eur J Drug Metab Pharmacokinet. 2019;44(2):169-177. PMID 30328058 — Improved Oral Absorption of Quercetin from Quercetin Phytosome®, a New Delivery System Based on Food Grade Lecithin. Lecithin-based phytosome delivery raised plasma quercetin roughly 20-fold versus unformulated quercetin, establishing the bioavailability advantage that anchors this ranking.
- [2] Di Pierro F, Derosa G, Maffioli P, et al. Possible Therapeutic Effects of Adjuvant Quercetin Supplementation Against Early-Stage COVID-19 Infection: A Prospective, Randomized, Controlled, and Open-Label Study. Int J Gen Med. 2021;14:2359-2366. PMID 34135619 — Possible Therapeutic Effects of Adjuvant Quercetin Supplementation Against Early-Stage COVID-19 Infection. Small open-label RCT using Quercefit phytosome as an adjunct in early COVID-19 reported reduced symptom severity and hospitalization — suggestive but not confirmatory human immune evidence.
- [3] Heinz SA, Henson DA, Austin MD, Jin F, Nieman DC. Quercetin supplementation and upper respiratory tract infection: A randomized community clinical trial. Pharmacol Res. 2010;62(3):237-242. PMID 20478383 — Quercetin supplementation and upper respiratory tract infection: A randomized community clinical trial. 1,000 mg/day quercetin did not reduce URTI rates overall, but showed benefit in a subgroup of older, physically fit adults — illustrating the modest, inconsistent immune signal.
- [4] Nieman DC, Henson DA, Gross SJ, et al. Quercetin reduces illness but not immune perturbations after intensive exercise. Med Sci Sports Exerc. 2007;39(9):1561-1569. PMID 17805089 — Quercetin reduces illness but not immune perturbations after intensive exercise. Quercetin lowered post-exertion upper respiratory illness incidence in endurance athletes without altering measured immune markers, supporting a narrow, context-specific benefit.
- [5] Mlcek J, Jurikova T, Skrovankova S, Sochor J. Quercetin and Its Anti-Allergic Immune Response. Molecules. 2016;21(5):623. PMID 27187333 — Quercetin and Its Anti-Allergic Immune Response. Review documenting quercetin's mast-cell-stabilizing and anti-inflammatory mechanisms — a plausible allergy rationale that is largely preclinical rather than proven in human outcomes.
- [6] Serban MC, Sahebkar A, Zanchetti A, et al. Effects of Quercetin on Blood Pressure: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. J Am Heart Assoc. 2016;5(7):e002713. PMID 27405810 — Effects of Quercetin on Blood Pressure: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. Meta-analysis of RCTs found a small but significant blood-pressure reduction with quercetin, demonstrating that its best-evidenced human effects lie outside immunity.
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