| AllerBreez | Advanced Nutrition by Zahler | 1650 mg | — | Capsule |
| Quercetin 1000 mg● OTHER INGREDIENTS (2) | Nutricost | 1000 mg | — | Capsule |
| Cell Repair Formula | Beyond Health | 1000 mg | — | Tablet or Pill |
| Quercetin 1000 mg● OTHER INGREDIENTS (2) | Best Naturals | 1000 mg | — | Capsule |
| Resistance⚠ EXCEEDS UL (2) | Apollon Nutrition | 1000 mg | — | Capsule |
| Mega Quercetin | Body Kitchen | 1000 mg | — | Capsule |
| Quercetin Dihydrate 1000 mg Capsules | BulkSupplements.com | 1000 mg | — | Capsule |
| Quercetin Dihydrate Powder 1000 mg | BulkSupplements.com | 1000 mg | — | Powder |
| Quercetin | Earthborn Elements | 900 mg | — | Capsule |
| Super Quercetin+● OTHER INGREDIENTS (2) | Quantum Health | 750 mg | — | Capsule |
| Quercetin Dihydrate 650 mg with Vitamin D 20 mcg (800 IU)● OTHER INGREDIENTS (2) | Puritan's Pride | 650 mg | — | Capsule |
| Mega Quercetin 600 mg● OTHER INGREDIENTS (3) | Solaray | 600 mg | — | Capsule |
| Quercetin 300● OTHER INGREDIENTS (1) | Allergy Research Group | 600 mg | — | Capsule |
| Mega NAC + Quercetin | Body Kitchen | 600 mg | — | Capsule |
| Nettle Quercetin | Oregon's Wild Harvest | 525 mg | — | Capsule |
| Respiration Formula● OTHER INGREDIENTS (2) | Bronson Laboratories | 500 mg | — | Tablet or Pill |
| Prostate Plus● OTHER INGREDIENTS (3) | Nugevity | 500 mg | — | Tablet or Pill |
| Quercetin plus Bromelain● OTHER INGREDIENTS (1) | tnvitamins | 500 mg | — | Capsule |
| Quercetin +● OTHER INGREDIENTS (2) | Quantum Health | 500 mg | — | Capsule |
| Quercetin Dihydrate (250 mg) | BulkSupplements.com | 500 mg | — | Powder |
| Quercetin 500 mg | Mental Refreshment | 500 mg | — | Capsule |
| Quercetin Dihydrate 500mg plus Zinc 25mg● OTHER INGREDIENTS (2) | Puritan's Pride | 500 mg | — | Capsule |
| Quercetin Dihydrate plus Vitamin C● OTHER INGREDIENTS (1) | Puritan's Pride | 500 mg | — | Capsule |
| Quercetin+C● OTHER INGREDIENTS (1) | The Vitamin Shoppe | 500 mg | — | Capsule |
| Seasonal Shield● OTHER INGREDIENTS (2) | NuMedica | 500 mg | — | Capsule |
| UA-X Pro● OTHER INGREDIENTS (2) | Ortho Molecular Products | 500 mg | — | Capsule |
| Quercetin 500 mg● OTHER INGREDIENTS (1) | Natural Grocers by Vitamin Cottage | 500 mg | — | Capsule |
| Hist-Resist | Vinco | 400 mg | — | Capsule |
| Aller Plus | Quantum Nutrition Labs | 400 mg | — | Capsule |
| AllerCaps | Premier Research Labs | 400 mg | — | Capsule |
| Natural D-Hist● OTHER INGREDIENTS (2) | Ortho Molecular Products | 400 mg | — | Capsule |
| Soft Tissue Support Pack● OTHER INGREDIENTS (2) | Ortho Molecular Products | 385 mg | — | Other (e.g. tea bag) |
| Nettles Quercetin 350 mg | Eclectic Herb | 350 mg | — | Capsule |
| Attack 3.1 Cassis Flavour⚠ EXCEEDS UL● OTHER INGREDIENTS (2) | Body Attack | 336 mg | — | Powder |
| Attack 3.1 Green Apple Flavour⚠ EXCEEDS UL● OTHER INGREDIENTS (2) | Body Attack | 336 mg | — | Powder |
| Quercetin Complex● OTHER INGREDIENTS (1) | Cooper Complete | 333 mg | — | Capsule |
| Seratonin | Allergy Research Group | 300 mg | — | Capsule |
| BCQ● OTHER INGREDIENTS (1) | Vital Nutrients | 300 mg | — | Capsule |
| Non-Drowsy Aller-Pure● OTHER INGREDIENTS (3) | Irwin Naturals | 300 mg | — | Softgel Capsule |
| GlutaQ● OTHER INGREDIENTS (1) | Market America | 300 mg | — | Capsule |
| Aller-Aid | Oregon's Wild Harvest | 275 mg | — | Capsule |
| InflammaCORE Chocolate Mint● OTHER INGREDIENTS (1) | Ortho Molecular Products | 250 mg | — | Powder |
| Gut Feeling Max● OTHER INGREDIENTS (1) | HoltraCeuticals | 250 mg | — | Powder |
| InflammaCORE Orange Splash● OTHER INGREDIENTS (1) | Ortho Molecular Products | 250 mg | — | Powder |
| Quercetin Dihydrate plus Bromelain & Vitamin C● OTHER INGREDIENTS (3) | Puritan's Pride | 250 mg | — | Capsule |
| Wholly Immune● OTHER INGREDIENTS (1) | Allergy Research Group | 250 mg | — | Powder |
| InflammaCORE Banana Creme● OTHER INGREDIENTS (1) | Ortho Molecular Products | 250 mg | — | Powder |
| Vitality | Transparent Labs | 250 mg | — | Capsule |
| Glucosamine & Chondroitin With Quercetin And Bromelain● OTHER INGREDIENTS (1) | The Vitamin Shoppe | 250 mg | — | Capsule |
| Genius Test | The Genius Brand | 250 mg | — | Capsule |
| Vital Clear | Vital Nutrients | 250 mg | — | Powder |
| Quercetin Gummies 250 mg Mango | Trace Minerals | 250 mg | — | Gummy or Jelly |
| Vitamin C with Quercetin● OTHER INGREDIENTS (1) | Integrative Therapeutics | 250 mg | — | Capsule |
| InflammaCORE Strawberry● OTHER INGREDIENTS (1) | Ortho Molecular Products | 250 mg | — | Powder |
| OrthoMune● OTHER INGREDIENTS (2) | Ortho Molecular Products | 250 mg | — | Capsule |
| InflammaCORE Vanilla Chai● OTHER INGREDIENTS (2) | Ortho Molecular Products | 250 mg | — | Powder |
| InflammaCORE Natural Cherry● OTHER INGREDIENTS (1) | Ortho Molecular Products | 250 mg | — | Powder |
| Traumeric● OTHER INGREDIENTS (2) | Ortho Molecular Products | 240 mg | — | Capsule |
| X-Hist● OTHER INGREDIENTS (2) | HoltraCeuticals | 200 mg | — | Capsule |
| Q-Veratrol Antioxidant● OTHER INGREDIENTS (3) | Juvenon | 200 mg | — | Capsule |
| CitraNOX● OTHER INGREDIENTS (1) | Ortho Molecular Products | 200 mg | — | Capsule |
| Mitochondrial Recharge● OTHER INGREDIENTS (1) | NuMedica | 200 mg | — | Capsule |
| Prosplex For Men● OTHER INGREDIENTS (1) | OL Olympian Labs | 200 mg | — | Capsule |
| Resvera-Gold● OTHER INGREDIENTS (1) | Douglas Laboratories | 150 mg | — | Capsule |
| Respiratory & Immune | BioSchwartz | 150 mg | — | Capsule |
| Pack #1, Joint Health Pack● OTHER INGREDIENTS (3) | Douglas Laboratories | 150 mg | — | Other (e.g. tea bag) |
| GI Repair Nutrients● OTHER INGREDIENTS (1) | Vital Nutrients | 150 mg | — | Capsule |
| Advanced Nutrivision⚠ EXCEEDS UL● OTHER INGREDIENTS (2) | Bronson Laboratories | 125 mg | — | Capsule |
| OptiVision | SuperSmart | 112.5 mg | — | Capsule |
| D-Hist Jr.● OTHER INGREDIENTS (1) | Ortho Molecular Products | 100 mg | — | Tablet or Pill |
| Accutrophin● OTHER INGREDIENTS (3) | Physician's Signature | 100 mg | — | Capsule |
| Eye Essentials● OTHER INGREDIENTS (3) | Supplement Spot | 100 mg | — | Capsule |
| OpticOne | Patient One 1 MediNutritionals | 100 mg | — | Capsule |
| Greens First Chocolate | Greens First | 100 mg | — | Powder |
| SeraMense plus Probiotics Greens⚠ EXCEEDS UL | Greens First Female | 100 mg | — | Powder |
| Ocuvital● OTHER INGREDIENTS (3) | Pharmaxa Labs | 100 mg | — | Capsule |
| Advanced Antioxidant Complex● OTHER INGREDIENTS (2) | Vitamer Laboratories | 100 mg | — | Capsule |
| Advanced Antioxidant Complex● OTHER INGREDIENTS (2) | VitaCeutical Labs | 100 mg | — | Capsule |
| Phyto Benefits | DaVinci Benefits Line | 100 mg | — | Capsule |
| Vision Support● OTHER INGREDIENTS (3) | NusaPure | 100 mg | — | Capsule |
| Eye Vitality● OTHER INGREDIENTS (3) | HerbaMe | 100 mg | — | Capsule |
| Permeability Select● OTHER INGREDIENTS (2) | Moss Nutrition | 100 mg | — | Capsule |
| Quercetin Bioflavonoids | Allergy Research Group | 100 mg | — | Capsule |
| 4Sight● OTHER INGREDIENTS (2) | Ortho Molecular Products | 100 mg | — | Capsule |
| InflammaSelect● OTHER INGREDIENTS (1) | Moss Nutrition | 100 mg | — | Capsule |
| Vision Support● OTHER INGREDIENTS (3) | Nature's Craft | 100 mg | — | Capsule |
| Greens First | Greens First | 100 mg | — | Powder |
| Lutein Eye Vitamins● OTHER INGREDIENTS (3) | Healths Harmony | 100 mg | — | Capsule |
| Flow Ease | Healing Oasis | 100 mg | — | Powder |
| VisionCare Complete⚠ EXCEEDS UL● OTHER INGREDIENTS (2) | Healthy Choice Naturals | 100 mg | — | Capsule |
| MenoSolve Plus Probiotics Original Mint Flavor | Greens First Female | 100 mg | — | Powder |
| OptiSight● OTHER INGREDIENTS (3) | Logos Nutritionals | 100 mg | — | Capsule |
| SeraMense plus Probiotics Chocolate⚠ EXCEEDS UL | Greens First Female | 100 mg | — | Powder |
| ITIS | Return Healthy | 90 mg | — | Capsule |
| Bergamot● OTHER INGREDIENTS (1) | Reserveage Beauty | 80 mg | — | Capsule |
| Energy Formula● OTHER INGREDIENTS (3) | Juvenon | 80 mg | — | Capsule |
| Breathe | Bernard Jensen's | 77 mg | — | Capsule |
| Vascuzyme● OTHER INGREDIENTS (1) | Ortho Molecular Products | 75 mg | — | Tablet or Pill |
| GI Mend | Allergy Research Group | 75 mg | — | Capsule |
| C-Flav● OTHER INGREDIENTS (1) | Ortho Molecular Products | 70 mg | — | Capsule |