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Piping Rock
Zinc (as Zinc Oxide), Quercetin 100 mg
Doctor's BEST
Quercetin 500 mg, Bromelain 250 mg
Bio Nutrition
Moringa oleifera extract 5000 mg
BrainChild Nutritionals
Vitamin A (mixed carotenoids) 1375 IU, Vitamin C (ascorbic acid) 500 mg, Bioflavonoids (quercetin) 50 mg
GNC
Quercetin 500 mg
Integrative Therapeutics
Alpha-Glycosyl Isoquercitrin 33 mg
Mt. Angel Vitamins
Vitamin C (ascorbic acid), Quercetin 100 mg, Stinging Nettle Leaf (freeze dried Urtica dioica) 30 mg
SOLARAY
Vitamin C (ascorbic acid) 450 mg, Quercetin Dihydrate 250 mg, Citrus Bioflavonoids Complex 125 mg +1 more
Instant Brands
Vitamin C (as ascorbic acid) 30 mg, Vitamin E (as d-Alpha toco, succinate) 20 mg, Selenium (as amino acid chelate) 20 mcg +22 more
Deseret Biologicals
Gaia Herbs
Turmeric root extract 32 mg, Curcumins 30 mg, Quercetin 60 mg +6 more
THORNE
NOW Foods
Quercetin, Bromelain (2400 GDU/g) 800 mg
Source Naturals
Vitamin C 788 mg, Magnesium 50 mg, Quercetin 1 g +1 more
Supersmart
Acetyl-L-Carnitine Arginate 250 mg, Carnosine 250 mg, R-Lipoic Acid 100 mg +9 more
NFH
Quercetin 500 mg, Bromelain 100 mg
ECLECTIC INSTITUTE
Vitamin C 2 mg, Iron 0.6 mg, Flavonoids 5 mg +6 more
Vitamin Discount Center
Vitamin C (as ascorbic acid) 250 mg, Manganese (as amino acid chelate) 10 mg, Quercetin 500 mg +7 more
Nature's Lab
Quercetin (bioflavonoid) 500 mg, Bromelain, 3,000 GDU/g* 250 mg
Ortho Nutrition
Curcumin 95 250 mg, Quercetin 95% 100 mg, Trans-Resveratrol 99% 100 mg +1 more
Biotherapy
Swanson
Quercetin 250 mg, Grape seed extract 100 mg, Resveratrol 100 mg
Douglas Laboratories
100 Naturals
Solgar
Tart Cherry Extract 250 mg, (Prunus cerasus) (fruit)
Higher Nature
Jarrow Formulas