| Echinacea 1,300 mg● OTHER INGREDIENTS (1) | Nature's Truth | 1300 mg | — | Capsule |
| Natural Echinacea | Spring Valley | 1140 mg | — | Capsule |
| Echinacea 400 mg | NOW | 800 mg | — | Capsule |
| Echinacea● OTHER INGREDIENTS (2) | Spring Valley | 760 mg | — | Capsule |
| Echinacea | Fresh Nutrition | 500 mg | — | Capsule |
| Citrigen● OTHER INGREDIENTS (1) | Genestra Brands | 500 mg | — | Capsule |
| Vita Biotic | Eclectic Herb | 455 mg | — | Capsule |
| Echinacea & Goldenseal Root 225/225 mg Blend | NOW | 450 mg | — | Capsule |
| Echinacea & Goldenseal Root | New Sun | 450 mg | — | Capsule |
| Echinacea Purpurea 440 mg● OTHER INGREDIENTS (1) | Solaray | 440 mg | — | Capsule |
| Echinacea With Zinc & Vitamin C | Oregon's Wild Harvest | 430 mg | — | Capsule |
| Echinacea | Village Vitality | 420 mg | — | Capsule |
| Natural Whole Herb Echinacea 400 mg | Nature's Bounty | 400 mg | — | Capsule |
| Echinacea 400 mg● OTHER INGREDIENTS (1) | tnvitamins | 400 mg | — | Capsule |
| Echinacea 400 mg | Bronson Laboratories | 400 mg | — | Capsule |
| Echinacea● OTHER INGREDIENTS (2) | Nature's Sunshine | 400 mg | — | Capsule |
| Echinacea 400 mg● OTHER INGREDIENTS (2) | Best Naturals | 400 mg | — | Capsule |
| Echinacea 400 mg | Meijer | 400 mg | — | Capsule |
| Echinacea 400 mg | Sundown Naturalist | 400 mg | — | Capsule |
| Echinacea 400 mg | Finest Nutrition | 400 mg | — | Capsule |
| Echinacea 400 mg | Nature's Bounty | 400 mg | — | Capsule |
| Echinacea 400 mg | Sundown Naturals | 400 mg | — | Capsule |
| Echinacea 400 mg● OTHER INGREDIENTS (2) | Bronson | 400 mg | — | Capsule |
| Whole Herb Echinacea 400 mg | Rexall | 400 mg | — | Capsule |
| Phyto Shield● OTHER INGREDIENTS (1) | Douglas Laboratories | 400 mg | — | Capsule |
| Echinacea 400 mg | Vitamin World | 400 mg | — | Capsule |
| Echinacea 400 mg | NutraBio | 400 mg | — | Capsule |
| Echinacea 400 mg● OTHER INGREDIENTS (1) | AN Amazing Nutrition Amazing Formulas | 400 mg | — | Capsule |
| Echinacea 400 mg | Puritan's Pride Premium | 400 mg | — | Capsule |
| Enchinacea 400 mg | Radiance | 400 mg | — | Capsule |
| Echinacea Plus | Sundown Naturals | 375 mg | — | Capsule |
| Echinacea 350 mg● OTHER INGREDIENTS (1) | Sunshine Naturals | 350 mg | — | Capsule |
| Echinacea | Oregon's Wild Harvest | 330 mg | — | Capsule |
| Immunity Formula● OTHER INGREDIENTS (2) | BIOVEA | 325 mg | — | Capsule |
| CMPRS | Loomis Enzymes | 310 mg | — | Capsule |
| ImmunoSupport Complex● OTHER INGREDIENTS (1) | Adaptogen Research | 300 mg | — | Capsule |
| Vitamin C Echinacea 500 mg● OTHER INGREDIENTS (1) | Solaray | 300 mg | — | Capsule |
| Blood Cleanse● OTHER INGREDIENTS (1) | Health Plus | 300 mg | — | Capsule |
| Immunitone Plus● OTHER INGREDIENTS (1) | Designs for Health | 300 mg | — | Capsule |
| Commando 2000● OTHER INGREDIENTS (2) | NaturesPlus | 250 mg | — | Tablet or Pill |
| Immunity Plus | Just Thrive | 250 mg | — | Capsule |
| Goldenseal & Echinacea● OTHER INGREDIENTS (1) | OL Olympian Labs | 225 mg | — | Capsule |
| Immuni-T● OTHER INGREDIENTS (1) | LifeSeasons Therapeutics | 200 mg | — | Capsule |
| Echinacea Pure 800 mg | Eu Natural | 200 mg | — | Capsule |
| Immune Support Advanced Formulation⚠ EXCEEDS UL● OTHER INGREDIENTS (1) | Fortify Supplements | 200 mg | — | Capsule |
| Beyond Wellness● OTHER INGREDIENTS (3) | KAL | 200 mg | — | Tablet or Pill |
| Echinacea Goldenseal | Oregon's Wild Harvest | 180 mg | — | Capsule |
| Sym | Loomis Enzymes | 170 mg | — | Capsule |
| SLP | Loomis Enzymes | 170 mg | — | Capsule |
| RespiClear | Karuna | 150 mg | — | Liquid |
| Echinacea Goldenseal Alcohol-Free Extract Orange | Oregon's Wild Harvest | 150 mg | — | Liquid |
| KN-FLX | Loomis Enzymes | 140 mg | — | Capsule |
| Kdy | Loomis Enzymes | 130 mg | — | Capsule |
| Spl | Loomis Enzymes | 130 mg | — | Capsule |
| Premium Echinacea Extract Alcohol-Free Extract Raspberry | Oregon's Wild Harvest | 110 mg | — | Liquid |
| Immune Action● OTHER INGREDIENTS (1) | NaturesPlus | 100 mg | — | Capsule |
| C-500 with Wild Rose Hips Plus Echinacea● OTHER INGREDIENTS (2) | Puritan's Pride | 100 mg | — | Other (e.g. tea bag) |
| Echinacea Max-V Angustifolia & Purpurea● OTHER INGREDIENTS (1) | Douglas Laboratories | 100 mg | — | Capsule |
| Ester C +● OTHER INGREDIENTS (1) | DC | 100 mg | — | Capsule |
| Nutri-Immuno Pack With Herbs⚠ EXCEEDS UL● OTHER INGREDIENTS (2) | Douglas Laboratories | 100 mg | — | Other (e.g. tea bag) |
| Vitamin C-500 mg Plus Echinacea● OTHER INGREDIENTS (2) | Nature's Bounty | 100 mg | — | Other (e.g. tea bag) |
| Immunoforce C-500● OTHER INGREDIENTS (2) | Puritan's Pride | 100 mg | — | Other (e.g. tea bag) |
| Immune Support Gummies With Zinc, Echinacea And Elderberry | Vitamin World | 80 mg | — | Gummy or Jelly |
| Immune Support Gummies Cran-Raspberry & Black Cherry Flavored | Sundown Naturals | 80 mg | — | Gummy or Jelly |
| Immune Support Gummies | Puritan's Pride | 80 mg | — | Gummy or Jelly |
| Seasonal Clear | Priority One Nutritional Supplements | 75 mg | — | Capsule |
| ELXR | Chiro-Zyme | 60 mg | — | Capsule |
| ELXR | Thera-Zyme | 60 mg | — | Capsule |
| Lymph Complex● OTHER INGREDIENTS (2) | MBi Nutraceuticals | 60 mg | — | Capsule |
| Kids Echinacea Goldenseal Alcohol-Free Extract Orange | Oregon's Wild Harvest | 60 mg | — | Liquid |
| ELXR | Loomis Enzymes | 60 mg | — | Capsule |
| Immune Booster● OTHER INGREDIENTS (2) | NaturesPlus Source of Life | 50 mg | — | Tablet or Pill |
| Elderberry +● OTHER INGREDIENTS (2) | Leading Edge Health | 50 mg | — | Other (e.g. tea bag) |
| Regeneration | NaturesPlus | 50 mg | — | Softgel Capsule |
| EC + Complex● OTHER INGREDIENTS (2) | Genestra Brands | 50 mg | — | Capsule |
| Whole System Thymus Complex | Nutri-West | 45 mg | — | Tablet or Pill |
| Whole System Lymph | Nutri-West | 44 mg | — | Tablet or Pill |
| Echinacea Angustifolia 125 mg● OTHER INGREDIENTS (1) | Solaray | 43 mg | — | Capsule |
| Sino Lung Formula | Nutri-West | 30 mg | — | Tablet or Pill |
| Radical Raiders● OTHER INGREDIENTS (2) | tnvitamins | 30 mg | — | Tablet or Pill |
| Opti-Recovery | Vitanica | 30 mg | — | Capsule |
| Total Cleanse Lymph● OTHER INGREDIENTS (3) | Solaray | 25 mg | — | Capsule |
| Maximum Anti-Oxidant Formula⚠ EXCEEDS UL● OTHER INGREDIENTS (2) | Radiance | 25 mg | — | Tablet or Pill |
| Maximum Antioxidant⚠ EXCEEDS UL● OTHER INGREDIENTS (2) | Vitamin World | 25 mg | — | Other (e.g. tea bag) |
| Prostate Support | Nutri-West | 25 mg | — | Tablet or Pill |
| Elderberry with Vitamin C & Echinacea● OTHER INGREDIENTS (2) | Windmill Natural Vitamins | 25 mg | — | Other (e.g. tea bag) |
| Active Immuity Gummies Elderberry Flavor | NUU3 | 25 mg | — | Gummy or Jelly |
| Herbal Immune Support Formula● OTHER INGREDIENTS (1) | Royal Guard | 25 mg | — | Capsule |
| C-1000 TR● OTHER INGREDIENTS (2) | MBi Nutraceuticals | 25 mg | — | Tablet or Pill |
| Zinc Lozenges with Vitamin C & Echinacea Delicious Cherry Flavor● OTHER INGREDIENTS (2) | Windmill Natural Vitamins | 25 mg | — | Lozenge |
| Zinc Lozenges plus Vitamin C● OTHER INGREDIENTS (1) | Sundown Naturals | 20 mg | — | Lozenge |
| Immunity Sleep● OTHER INGREDIENTS (1) | Angry Supplements | 20 mg | — | Capsule |
| Kids Multivitamin Strawberry Flavored● OTHER INGREDIENTS (2) | Sunshine Naturals | 20 mg | — | Tablet or Pill |
| 2-Phase Dual Immune Booster● OTHER INGREDIENTS (2) | Royal Guard | 17 mg | — | Tablet or Pill |
| Immune 24 Hour + | Nature's Bounty | 16.5 mg | — | Softgel Capsule |
| Ester-C | Puritan's Pride | 16.5 mg | — | Softgel Capsule |
| More Than A Multiple Multivitamin For Men⚠ EXCEEDS UL● OTHER INGREDIENTS (2) | American Health | 15 mg | — | Tablet or Pill |
| More Than A Multiple Multivitamin For Women⚠ EXCEEDS UL● OTHER INGREDIENTS (2) | American Health | 15 mg | — | Tablet or Pill |
| Whole System Histo-Zym | Nutri-West | 11 mg | — | Tablet or Pill |
| Con-Lyph | Nutri-West | 10 mg | — | Tablet or Pill |