Plant compounds
Quercetin
A plant pigment from onions, apples and capers. Studied for the immune system – studies in people are small.
63 products from US online stores, sorted by what 500 mg of quercetin costs – not by the price per pack.
2.3¢Lowest cost
per 500 mg quercetin
- Prices checked Nov 1, 2026, US
- No paid placements
What does 500 mg mean?
- quercetin per serving in most of the products we checked
- 250–1,000 mgquercetin per serving in most of the products we checked
- 500 mg is about one serving: half of the 63 products we checked have up to 500 mg per serving, the other half more.
- There’s no official daily amount for quercetin.
We compare by 500 mg only so products line up – it’s not a recommendation. Not medical advice.
Where products miss quality points
How the 63 products score
- Very good 90+: 2
- Good 75+: 61
- Fair 60+: 0
- Low under 60: 0
- have no seal from an independent testing program
- 97%have no seal from an independent testing program10 of 30 testing points for GMP, 15 for the 6 whose label says “third-party tested”
The full 30 testing points need an independent test. Every supplement sold in the US is made under the FDA’s GMP rules – the maker checks its own products, which gives 10 points. A seal from a testing program like NSF, USP or Informed Choice means a lab outside the company checks that what’s inside matches the label. Most brands don’t take part. That doesn’t make a product bad – without a seal, a clean product still gets up to 80.
We find seals on the label and in NSF’s public lists. USP and Informed Choice don’t let us search their lists automatically, so a seal that’s only in their lists can be missing. How the score works
Pack size
Compare packs of a similar size.
All sizes in one list can affect the results – big packs usually cost less per 500 mg. Pick a size above to compare packs that are alike.
63 products · cheapest per 500 mg quercetin first
- Rank 1
NaturesPlus
PRO Quercetin
Quercetin dihydrate · Tablets
75Good qualityCountry not stated2.3¢per 500 mg
Lowest
- Pack
- $18.95600 tablets
- Quercetin per serving
- 674 mgin 1 tablet
- Pack lasts
- 600 daysif you take 1 tablet (674 mg) a day
naturesplus.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 2
NaturesPlus
PRO Quercetin
Quercetin dihydrate · Capsules
75Good qualityCountry not stated3.4¢per 500 mg
44% more
- Pack
- $18.95500 capsules
- Quercetin per serving
- 562 mgin 1 capsule
- Pack lasts
- 500 daysif you take 1 capsule (562 mg) a day
naturesplus.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 3
Vitamatic
Quercetin Dihydrate Powder 1000mg Pouch
Quercetin dihydrate · Powder
75Good qualityCountry not stated$0.10per 500 mg
327% more
- Pack
- $19.99100 servings
- Quercetin per serving
- 1,000 mg
- Pack lasts
- 200 daysif you take 500 mg a day
vitamaticusa.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 4
Best Naturals
Quercetin 1000 mg
Quercetin dihydrate · Tablets
75Good qualityMade in USA$0.12per 500 mg
433% more
- Pack
- $14.9960 tablets
- Quercetin per serving
- 1,000 mgin 1 tablet
- Pack lasts
- 60 daysif you take 1 tablet (1,000 mg) a day
shopbestnaturals.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 5
Amazing Nutrition
Amazing Formulas Quercetin - 500 Mg
Quercetin dihydrate · Capsules
75Good qualityMade in USA$0.17per 500 mg
611% more
- Pack
- $19.99120 capsules
- Quercetin per serving
- 500 mgin 1 capsule
- Pack lasts
- 120 daysif you take 1 capsule (500 mg) a day
amazingnutrition.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 6
Best Naturals
Quercetin 1000 mg
Quercetin dihydrate · Capsules
75Good qualityMade in USA$0.17per 500 mg
611% more
- Pack
- $19.99120 capsules60 servings
- Quercetin per serving
- 1,000 mgin 2 capsules
- Pack lasts
- 120 daysif you take 1 capsule (500 mg) a day
shopbestnaturals.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 7
Vitamatic
Quercetin 500mg
Quercetin dihydrate · Capsules
75Good qualityMade in USA$0.17per 500 mg
611% more
- Pack
- $19.99120 capsules
- Quercetin per serving
- 500 mgin 1 capsule
- Pack lasts
- 120 daysif you take 1 capsule (500 mg) a day
vitamaticusa.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 8
Amazing Nutrition
Amazing Formulas Quercetin - 500 Mg
Quercetin dihydrate · Capsules
75Good qualityMade in USA$0.17per 500 mg
611% more
- Pack
- $39.99240 capsules
- Quercetin per serving
- 500 mgin 1 capsule
- Pack lasts
- 240 daysif you take 1 capsule (500 mg) a day
amazingnutrition.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 9
Best Naturals
Quercetin
Quercetin dihydrate · Capsules
75Good qualityMade in USA$0.17per 500 mg
639% more
- Pack
- $20.77120 capsules60 servings
- Quercetin per serving
- 1,000 mgin 2 capsules
- Pack lasts
- 120 daysif you take 1 capsule (500 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 10
Nutricost
Quercetin
Quercetin dihydrate · Capsules
80Good qualityMade in USA$0.18per 500 mg
681% more
- Pack
- $21.95120 capsules60 servings
- Quercetin per serving
- 1,000 mgin 2 capsules
- Pack lasts
- 120 daysif you take 1 capsule (500 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 11
Nutricost
Quercetin (1000mg)
Quercetin dihydrate · Capsules
80Good qualityCountry not stated$0.18per 500 mg
681% more
- Pack
- $21.97120 capsules60 servings
- Quercetin per serving
- 1,000 mgin 2 capsules
- Pack lasts
- 120 daysif you take 1 capsule (500 mg) a day
nutricost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 12
Vitamatic
Quercetin, 500 mg
Quercetin dihydrate · Capsules
75Good qualityCountry not stated$0.18per 500 mg
682% more
- Pack
- $21.99120 capsules
- Quercetin per serving
- 500 mgin 1 capsule
- Pack lasts
- 120 daysif you take 1 capsule (500 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 13
BulkSupplements
Quercetin Dihydrate Capsules
Quercetin dihydrate · Capsules
75Good qualityCountry not stated$0.20per 500 mg
753% more
- Pack
- $23.97240 capsules60 servings
- Quercetin per serving
- 1,000 mgin 4 capsules
- Pack lasts
- 120 daysif you take 2 capsules (500 mg) a day
bulksupplements.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 14
Amazing Nutrition
Quercetin, 500 mg
Quercetin dihydrate · Capsules
75Good qualityMade in USA$0.21per 500 mg
780% more
- Pack
- $24.74120 capsules
- Quercetin per serving
- 500 mgin 1 capsule
- Pack lasts
- 120 daysif you take 1 capsule (500 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 15
Herbal Secrets
Quercetin, 500 mg
Quercetin dihydrate · Capsules
75Good qualityMade in USA$0.21per 500 mg
780% more
- Pack
- $24.74120 capsules
- Quercetin per serving
- 500 mgin 1 capsule
- Pack lasts
- 120 daysif you take 1 capsule (500 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 16
NOW Foods
Quercetin, 500 mg
Quercetin dihydrate · Capsules
75Good qualityMade in USA$0.21per 500 mg
814% more
- Pack
- $21.41100 capsules50 servings
- Quercetin per serving
- 1,000 mgin 2 capsules
- Pack lasts
- 100 daysif you take 1 capsule (500 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 17
NaturesPlus
Pro Quercetin 600
Quercetin dihydrate · Tablets
75Good qualityCountry not stated$0.22per 500 mg
855% more
- Pack
- $16.1160 tablets
- Quercetin per serving
- 600 mgin 1 tablet
- Pack lasts
- 60 daysif you take 1 tablet (600 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 18
Amazing Nutrition
Quercetin, 500 mg
Quercetin dihydrate · Capsules
75Good qualityMade in USA$0.22per 500 mg
860% more
- Pack
- $13.4960 capsules
- Quercetin per serving
- 500 mgin 1 capsule
- Pack lasts
- 60 daysif you take 1 capsule (500 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 19
Amazing Nutrition
Amazing Formulas Quercetin - 500 Mg
Quercetin dihydrate · Capsules
75Good qualityMade in USA$0.22per 500 mg
860% more
- Pack
- $13.4960 capsules
- Quercetin per serving
- 500 mgin 1 capsule
- Pack lasts
- 60 daysif you take 1 capsule (500 mg) a day
amazingnutrition.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 20
Toniiq
Quercetin
Quercetin dihydrate · Capsules
75Good qualityCountry not stated$0.25per 500 mg
966% more
- Pack
- $29.97120 capsules60 servings
- Quercetin per serving
- 1,000 mgin 2 capsules
- Pack lasts
- 120 daysif you take 1 capsule (500 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 21
California Gold Nutrition
Quercetin, 500 mg
Quercetin dihydrate · Capsules
75Good qualityCountry not stated$0.27per 500 mg
1,041% more
- Pack
- $48.13180 capsules
- Quercetin per serving
- 500 mgin 1 capsule
- Pack lasts
- 180 daysif you take 1 capsule (500 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 22
NaturesPlus
Pro Quercetin 500
Quercetin dihydrate · Capsules
75Good qualityCountry not stated$0.28per 500 mg
1,104% more
- Pack
- $16.9260 capsules
- Quercetin per serving
- 500 mgin 1 capsule
- Pack lasts
- 60 daysif you take 1 capsule (500 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 23
Jarrow Formulas
Quercetin, 500 mg
Quercetin dihydrate · Capsules
75Good qualityCountry not stated$0.31per 500 mg
1,232% more
- Pack
- $62.41200 capsules
- Quercetin per serving
- 500 mgin 1 capsule
- Pack lasts
- 200 daysif you take 1 capsule (500 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 24
Solaray
Quercetin, 500 mg
Quercetin dihydrate · Capsules
75Good qualityCountry not stated$0.32per 500 mg
1,246% more
- Pack
- $28.3990 capsules
- Quercetin per serving
- 500 mgin 1 capsule
- Pack lasts
- 90 daysif you take 1 capsule (500 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 25
Swanson Vitamins
Quercetin, 475 mg
Quercetin dihydrate · Capsules
75Good qualityCountry not stated$0.33per 500 mg
1,322% more
- Pack
- $18.9960 capsules
- Quercetin per serving
- 475 mgin 1 capsule
- Pack lasts
- 30 daysif you take 2 capsules (950 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 26
Swanson Vitamins
Quercetin - Higher Strength
Quercetin dihydrate · Capsules
75Good qualityCountry not stated$0.33per 500 mg
1,322% more
- Pack
- $18.9960 capsules
- Quercetin per serving
- 475 mgin 1 capsule
- Pack lasts
- 30 daysif you take 2 capsules (950 mg) a day
swansonvitamins.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 27
Natural Factors
Quercetin, 500 mg
Quercetin dihydrate · Capsules
75Good qualityMade in Canada$0.34per 500 mg
1,334% more
- Pack
- $20.1660 capsules
- Quercetin per serving
- 500 mgin 1 capsule
- Pack lasts
- 60 daysif you take 1 capsule (500 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 28
Jarrow Formulas
Vegan Quercetin, 500 mg
Quercetin dihydrate · Capsules
75Good qualityCountry not stated$0.34per 500 mg
1,349% more
- Pack
- $33.95100 capsules
- Quercetin per serving
- 500 mgin 1 capsule
- Pack lasts
- 100 daysif you take 1 capsule (500 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 29
Jarrow Formulas
Quercetin
Quercetin dihydrate · Capsules
75Good qualityCountry not stated$0.34per 500 mg
1,351% more
- Pack
- $67.99200 capsules
- Quercetin per serving
- 500 mgin 1 capsule
- Pack lasts
- 200 daysif you take 1 capsule (500 mg) a day
jarrow.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 30
Nature's Life
Fortifying Quercetin, 370 mg
Quercetin dihydrate · Capsules
75Good qualityCountry not stated$0.36per 500 mg
1,434% more
- Pack
- $26.59100 capsules
- Quercetin per serving
- 370 mgin 1 capsule
- Pack lasts
- 50 daysif you take 2 capsules (740 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 31
MRM Nutrition
Quercetin 500mg
Quercetin dihydrate · Capsules
75Good qualityCountry not stated$0.36per 500 mg
1,436% more
- Pack
- $21.5960 capsules
- Quercetin per serving
- 500 mgin 1 capsule
- Pack lasts
- 60 daysif you take 1 capsule (500 mg) a day
mrmnutrition.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 32
MRM Nutrition
Quercetin
Quercetin dihydrate · Capsules
75Good qualityCountry not stated$0.37per 500 mg
1,482% more
- Pack
- $22.2460 capsules
- Quercetin per serving
- 500 mgin 1 capsule
- Pack lasts
- 60 daysif you take 1 capsule (500 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 33
KAL
Quercetin, 1,000 mg
Quercetin dihydrate · Tablets
75Good qualityCountry not stated$0.38per 500 mg
1,528% more
- Pack
- $45.7760 tablets
- Quercetin per serving
- 1,000 mgin 1 tablet
- Pack lasts
- 60 daysif you take 1 tablet (1,000 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 34
Healthy Origins
Quercetin Phytosome
Enhanced quercetin · Capsules
80Good qualityCountry not stated$0.40per 500 mg
1,607% more
- Pack
- $47.99120 capsules
- Quercetin per serving
- 500 mgin 1 capsule
- Pack lasts
- 120 daysif you take 1 capsule (500 mg) a day
healthyorigins.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 35
NutraMedix
Quercetin
Quercetin dihydrate · Capsules
75Good qualityCountry not stated$0.47per 500 mg
1,888% more
- Pack
- $27.95120 capsules60 servings
- Quercetin per serving
- 500 mgin 2 capsules
- Pack lasts
- 60 daysif you take 2 capsules (500 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 36
Natural Factors
Quercetin
Quercetin dihydrate · Capsules
75Good qualityMade in Canada$0.47per 500 mg
1,888% more
- Pack
- $27.9560 capsules
- Quercetin per serving
- 500 mgin 1 capsule
- Pack lasts
- 60 daysif you take 1 capsule (500 mg) a day
naturalfactors.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 37
NutraMedix
Quercetin
Quercetin dihydrate · Capsules
75Good qualityCountry not stated$0.47per 500 mg
1,888% more
- Pack
- $27.95120 capsules60 servings
- Quercetin per serving
- 500 mgin 2 capsules
- Pack lasts
- 60 daysif you take 2 capsules (500 mg) a day
nutramedix.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 38
NOW Foods
Quercetin Phytosome
Enhanced quercetin · Capsules
80Good qualityMade in USA$0.53per 500 mg
2,173% more
- Pack
- $23.9690 capsules
- Quercetin per serving
- 250 mgin 1 capsule
- Pack lasts
- 45 daysif you take 2 capsules (500 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 39
LifeSeasons
Quercetin Flavonoid
Quercetin dihydrate · Capsules
75Good qualityMade in USA$0.53per 500 mg
2,176% more
- Pack
- $32.0060 capsules30 servings
- Quercetin per serving
- 1,000 mgin 2 capsules
- Pack lasts
- 60 daysif you take 1 capsule (500 mg) a day
lifeseasons.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 40
California Gold Nutrition
Quercetin Phytosome Quercefit, 250 mg
Enhanced quercetin · Capsules
80Good qualityCountry not stated$0.66per 500 mg
2,714% more
- Pack
- $19.7860 capsules
- Quercetin per serving
- 250 mgin 1 capsule
- Pack lasts
- 30 daysif you take 2 capsules (500 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
Good to know
- Fact
- 8,384%more per 500 mg for the most expensive product than for the cheapest.
- Fact
- 1,607%more per 500 mg for the cheapest enhanced quercetin than for the cheapest quercetin dihydrate.
How we checked: one-time price for each size in the store’s US online shop, before sales tax and shipping, without subscriptions or coupons. Prices change often, so check the store before you buy. More on how we check
The amount we compare by only makes products comparable – it is not a dosage recommendation. Not medical advice.
How we calculate
Cost per dose = price ÷ (servings × amount per serving) × comparison amount. Example: $119.99 for 74 servings with 24 g of protein each is 1,776 g of protein. $119.99 ÷ 1,776 g × 30 g = $2.03 per 30 g of protein.
Found a mistake or a product we should add? Email us