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Samsara Herbs
Quercetin (flower; Sophora flavescens ait.; standardized to 98%) 1177 mg
Herbal Secrets
Quercetin 800 mg, Bromelain 165 mg
Solgar
Quercetin 500 mg, Bromelain (2000 GDU/g) 50 mg, Rose Hips (fruit) 50 mg +2 more
Bioclinic Naturals
Vitamin C 50 mg, EMIQ® 167 mg
Mt. Angel Vitamins
Vitamin C (ascorbic acid) 100 mg, Quercetin 200 mg, Stinging Nettle Leaf 30 mg
VitaStrength
Alerna Kidney Health
Puritan's Pride
Vitamin C 1400 mg, Quercetin Dihydrate 500 mg
EBYSU
Utzy Naturals
Stinging Nettle 400 mg, Quercetin Dihydrate 200 mg, Rutin 200 mg +3 more
VIP VITAMINS
The Vitamin Shoppe
Vitanica
Life Extension
Vitamin A 1500 mcg RAE, Vitamin C 500 mg, Vitamin D3 50 mcg +25 more
Tesseract Medical Research
Quercetin complex** 400 mg
Onco-V
Vitamin C (as Ascorbic Acid) 500 mg, Vitamin D (as Cholecalciferol) 25 mcg, Vitamin E (as d-Alpha Tocopheryl Succinate) 13.4 mg +19 more
Micro Ingredients
Daily Manufacturing
Andrographis paniculata ParActin® 100 mg, Boswellia Ext. (Boswellia serrata) 125 mg, L-Histidine 5 mg +5 more
Terranova
Vitamin C (from Mineral Ascorbates) 1000 mg, Calcium (from Calcium Ascorbates) 124 mg, Magnesium (from Magnesium Ascorbate) 78 mg +3 more
Bio-Design
Vitamin C (ascorbic acid) 500 mg, Vitamin E (d-alpha tocophery) (300 IU), Vitamin A (5,000 IU) +16 more
Youngevity
Newport Natural Health
ATP LAB
Swanson
Quercetin 500 mg, Bromelain (2,400 GDU per gram) (from pineapple) 156 mg
Quercetin, Bromelain (2,400 GDU/gram) (from pineapple) 500 mg
BIOTICS RESEARCH