{
  "dataset": "quercetin-cost-by-brand",
  "title": "Quercetin Supplements Compared — cost per mg, split by plain vs phytosome form (not dose-equivalent)",
  "sourcePage": "https://verifiedsupplementdata.com/quercetin/best-overall/",
  "license": "CC-BY-4.0",
  "licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
  "attribution": "Verified Supplement Data (2026), Quercetin Cost Comparison",
  "dateModified": "2026-07-18",
  "methodology": "Plain (unformulated) quercetin and phytosome (lecithin-bound, e.g. Quercefit) quercetin are NOT dose-equivalent milligram-for-milligram — Riva 2019 (PMID 30328058, randomized crossover PK trial, n=12) measured up to 20x higher plasma quercetin from phytosome vs plain at the SAME labeled mg. costPerMg = price / (servings x mg quercetin per serving), computed and ranked SEPARATELY within each form — never pooled into one mg-for-mg leaderboard across forms. \"meetsBpDose\" (plain-form only) flags whether one labeled serving reaches 500mg/day, the dose-stratified threshold where Serban et al. 2016 (PMID 27405810, meta-analysis of 7 RCTs, n=587) found a statistically significant blood-pressure reduction (below 500mg/day the pooled effect was NOT significant, P=0.273 systolic). Allergy trials used a much lower phytosome label dose (Yamada 2022, PMID 35776034: 200mg/day Quercetin Phytosome) because of that absorption multiplier — never treat a phytosome mg figure as interchangeable with a plain mg figure at any dose. \"mgConfirmed\":false flags the one product (Quercetin Complete) whose label mg could not be independently re-verified because Amazon's rendered listing did not expose the supplement-facts panel on this research pass; its cost-per-mg figure is a labeled-typical estimate, not a confirmed number, and it is excluded from \"cheapest\" claims. That product's own \"50X Higher Absorption\" marketing claim exceeds Riva 2019's actual measured ~20x finding and is flagged, not repeated as fact. This statement has not been evaluated by the FDA; these products are not intended to diagnose, treat, cure, or prevent any disease.",
  "headline": {
    "productsCompared": 6,
    "plainFormCount": 4,
    "phytosomeFormCount": 2,
    "bpDoseFloorMg": 500,
    "allergyPhytosomeTrialMg": 200,
    "rivaFoldIncrease": 20,
    "cheapestPlainAtBpDoseBrand": "Nutricost Quercetin 1000 mg",
    "cheapestPlainAtBpDoseCostPerMg": 0.00033,
    "cheapestConfirmedPhytosomeBrand": "Thorne Quercetin Phytosome",
    "cheapestConfirmedPhytosomeCostPerMg": 0.00307,
    "note": "Plain and phytosome products are ranked in separate tables because they are not dose-equivalent per mg. The cheapest plain product per mg is not automatically \"better\" than the cheapest phytosome product — they deliver different amounts of circulating quercetin per labeled mg."
  },
  "columns": [
    "brand",
    "product",
    "slug",
    "form",
    "mgPerServing",
    "bromelainMgPerServing",
    "mgConfirmed",
    "servings",
    "price",
    "costPerServing",
    "costPerMg",
    "meetsBpDose",
    "verdict",
    "thirdParty"
  ],
  "units": {
    "mgPerServing": "mg quercetin",
    "bromelainMgPerServing": "mg bromelain",
    "price": "USD",
    "costPerServing": "USD/serving",
    "costPerMg": "USD per mg of quercetin (compare within form only)"
  },
  "citations": [
    {
      "claim": "Meta-analysis of 7 RCTs / 9 arms, n=587: SBP -3.04 mmHg (P=0.028), DBP -2.63 mmHg (P<0.001) overall. Dose-stratified: >=500mg/day SBP -4.45 mmHg (P=0.007), significant; <500mg/day SBP -1.59 mmHg (P=0.273), NOT significant.",
      "source": "Serban C, et al. 2016, J Am Heart Assoc",
      "pmid": "27405810"
    },
    {
      "claim": "Meta-analysis of 17 RCTs, n=896: SBP -3.09 mmHg, DBP -2.86 mmHg (both significant). No significant overall lipid or fasting-glucose effect.",
      "source": "Huang H, et al. 2020, Nutr Rev",
      "pmid": "31940027"
    },
    {
      "claim": "Meta-analysis of 10 RCTs, n=841: SBP -2.38 mmHg mixed population (P=0.01); larger DBP reduction in pre-hypertensive/hypertensive subgroup (-3.14 mmHg, P<0.00001).",
      "source": "Popiolek-Kalisz J, Fornal E. 2022, Curr Probl Cardiol",
      "pmid": "35948195"
    },
    {
      "claim": "Randomized crossover PK trial, n=12: 500mg plain quercetin vs 250mg/500mg Quercetin Phytosome — phytosome plasma levels up to 20x higher than plain at the same mg (AUC and Cmax, P<0.0001).",
      "source": "Riva A, et al. 2019, Eur J Drug Metab Pharmacokinet",
      "pmid": "30328058"
    },
    {
      "claim": "RCT, n=66 adults with pollinosis, 200mg/day Quercetin Phytosome x 4 weeks: significant improvement vs placebo in eye itching, sneezing, nasal discharge, sleep disturbance.",
      "source": "Yamada A, et al. 2022, Eur Rev Med Pharmacol Sci",
      "pmid": "35776034"
    }
  ],
  "products": [
    {
      "brand": "Nutricost",
      "product": "Quercetin 1000 mg",
      "slug": "nutricost-quercetin-1000mg",
      "form": "plain",
      "mgPerServing": 1000,
      "bromelainMgPerServing": null,
      "mgConfirmed": true,
      "servings": 60,
      "price": 19.95,
      "costPerServing": 0.33,
      "costPerMg": 0.00033,
      "meetsBpDose": true,
      "verdict": "plain-at-bp-dose",
      "thirdParty": "None claimed"
    },
    {
      "brand": "Doctor's Best",
      "product": "Quercetin Bromelain",
      "slug": "doctors-best-quercetin-bromelain-500mg",
      "form": "plain-bromelain",
      "mgPerServing": 500,
      "bromelainMgPerServing": 250,
      "mgConfirmed": true,
      "servings": 180,
      "price": 29.99,
      "costPerServing": 0.17,
      "costPerMg": 0.00033,
      "meetsBpDose": true,
      "verdict": "plain-at-bp-dose",
      "thirdParty": "None claimed"
    },
    {
      "brand": "NOW Foods",
      "product": "Quercetin with Bromelain",
      "slug": "now-foods-quercetin-bromelain-800mg",
      "form": "plain-bromelain",
      "mgPerServing": 800,
      "bromelainMgPerServing": 165,
      "mgConfirmed": true,
      "servings": 60,
      "price": 23.34,
      "costPerServing": 0.39,
      "costPerMg": 0.00049,
      "meetsBpDose": true,
      "verdict": "plain-at-bp-dose",
      "thirdParty": "None claimed"
    },
    {
      "brand": "Jarrow Formulas",
      "product": "Quercetin 500 mg",
      "slug": "jarrow-quercetin-500mg",
      "form": "plain",
      "mgPerServing": 500,
      "bromelainMgPerServing": null,
      "mgConfirmed": true,
      "servings": 200,
      "price": 52.94,
      "costPerServing": 0.26,
      "costPerMg": 0.00053,
      "meetsBpDose": true,
      "verdict": "plain-at-bp-dose",
      "thirdParty": "None claimed"
    },
    {
      "brand": "Quercetin Complete",
      "product": "(Quercefit Phytosome + Bromelain, Zinc, Vitamin C)",
      "slug": "quercetin-complete-phytosome-multi",
      "form": "phytosome-multi",
      "mgPerServing": 500,
      "bromelainMgPerServing": null,
      "mgConfirmed": false,
      "servings": 60,
      "price": 26.99,
      "costPerServing": 0.45,
      "costPerMg": 0.0009,
      "meetsBpDose": false,
      "verdict": "phytosome-mg-unconfirmed",
      "thirdParty": "None claimed"
    },
    {
      "brand": "Thorne",
      "product": "Quercetin Phytosome",
      "slug": "thorne-quercetin-phytosome-250mg",
      "form": "phytosome",
      "mgPerServing": 250,
      "bromelainMgPerServing": null,
      "mgConfirmed": true,
      "servings": 60,
      "price": 46,
      "costPerServing": 0.77,
      "costPerMg": 0.00307,
      "meetsBpDose": false,
      "verdict": "phytosome",
      "thirdParty": "None independently confirmed on this fetch (Thorne brand-level manufacturing standards)"
    }
  ]
}