| Maxi Lactation Pure & More | Maxi Health | 1400 mg | — | Capsule |
| Citrus Bioflavonoid Complex 1000 mg | Solgar | 1000 mg | — | Tablet or Pill |
| Citrus Bioflavonoid Complex 1,000 mg | Vitamin Discount Center | 1000 mg | — | Tablet or Pill |
| Citrus Bioflavonoids 1000 mg | Puritan's Pride | 1000 mg | — | Other (e.g. tea bag) |
| Mega Bio-C Formula | Bluebonnet | 750 mg | — | Capsule |
| Citrus Bioflavonoid Complex 750 mg | Bluebonnet | 750 mg | — | Capsule |
| Pycnogenol | NOW | 600 mg | — | Capsule |
| Vitamin C with Bioflavonoids 1,000 mg | Nature's Way | 600 mg | — | Capsule |
| Pycnogenol 30 mg | NOW | 600 mg | — | Capsule |
| Grape Seed 60 mg - Standardized Extract | NOW | 600 mg | — | Capsule |
| Bio C Plus | Logos Nutritionals | 535 mg | — | Tablet or Pill |
| Optimum-C Formula | Bluebonnet | 500 mg | — | Capsule |
| C-Bioflav 1000 | NuMedica | 500 mg | — | Capsule |
| Vitamin C With Bioflavonoids 500 mg | Vital Nutrients | 500 mg | — | Capsule |
| C-1000 mg & Bioflavonoids | Bluebonnet | 500 mg | — | Other (e.g. tea bag) |
| Hi-Bio-C | Newflower Farmers Markets | 500 mg | — | Tablet or Pill |
| Super C Plus | Higher Nature | 500 mg | — | Tablet or Pill |
| C-1000 mg plus Bioflavonoids | Bluebonnet | 500 mg | — | Other (e.g. tea bag) |
| Vitamin C with Citrus Bioflavonoids 500 mg | Bronson | 500 mg | — | Tablet or Pill |
| 500-C Methoxyflavone | Metagenics | 500 mg | — | Tablet or Pill |
| Maxi Allergy Support | Maxi Health | 400 mg | — | Capsule |
| Bioflavonoid Complex | Klaire Labs | 375 mg | — | Capsule |
| Vitamin C Buffered C-1000 | Healths Harmony | 364 mg | — | Tablet or Pill |
| Vitamin C | Healths Harmony | 364 mg | — | Tablet or Pill |
| Liquid Vitamin C Natural Lemon Flavor | Nature's Answer | 300 mg | — | Liquid |
| Grape Seed Extract 60 mg | The Vitamin Shoppe | 300 mg | — | Capsule |
| Super Vita-CoQ10 Formula | Bluebonnet | 300 mg | — | Other (e.g. tea bag) |
| Buffered C-1000 Complex | NOW | 250 mg | — | Tablet or Pill |
| Buffered Vitamin C 500 mg | Bluebonnet | 250 mg | — | Capsule |
| Maximum Eye Support | ProCaps Laboratories | 250 mg | — | Capsule |
| Ultimate Ascorbate C 1,000 mg | Source Naturals | 250 mg | — | Tablet or Pill |
| See | Quantum Health | 250 mg | — | Tablet or Pill |
| C-500 mg & Bioflavonoids | Bluebonnet | 250 mg | — | Other (e.g. tea bag) |
| Stress C Rx | Taylor MD Formulations | 250 mg | — | Tablet or Pill |
| Glucosamine Sulfate Complex | New Sun | 220 mg | — | Capsule |
| AdrenaCort | Karuna | 210 mg | — | Capsule |
| Eye Guard Plus With Lutigold | Vitamin World | 200 mg | — | Capsule |
| Men's Elite 200 | ProCaps Laboratories | 200 mg | — | Capsule |
| Women's Multi | Vitamer Laboratories | 200 mg | — | Tablet or Pill |
| Life Extension Mix Powder Without Copper | Life Extension | 200 mg | — | Powder |
| Life Extension Mix Tablets With Extra Niacin | Life Extension | 200 mg | — | Tablet or Pill |
| Life Extension Mix Tablets Without Copper | Life Extension | 200 mg | — | Tablet or Pill |
| Women's Founder's | ProCaps Laboratories | 200 mg | — | Capsule |
| Women's Multi | VitaCeutical Labs | 200 mg | — | Tablet or Pill |
| PureWay-C 500 mg with 200 mg Bioflavonoids | Newflower Farmers Markets | 200 mg | — | Tablet or Pill |
| Easy-C | Natrol | 200 mg | — | Capsule |
| Life Extension Mix Tablets With Extra Niacin & Without Copper | Life Extension | 200 mg | — | Tablet or Pill |
| Men's Founder's | ProCaps Laboratories | 200 mg | — | Other (e.g. tea bag) |
| Easy-C 1000 mg | Natrol | 200 mg | — | Tablet or Pill |
| Women's Elite 200 | ProCaps Laboratories | 200 mg | — | Capsule |
| Friendly-C 500 mg | BIOVEA | 200 mg | — | Tablet or Pill |
| Buffered Vitamin C with Bioflavonoids | Swanson | 200 mg | — | Capsule |
| Buffered C-Complex Powder | NOW | 200 mg | — | Powder |
| C-2000 Complex 2000 mg | The Vitamin Shoppe | 160 mg | — | Tablet or Pill |
| Vision | Nature's Way | 150 mg | — | Capsule |
| Herbal Biotic | Vital Nutrients | 150 mg | — | Capsule |
| Adult Sinus Support | Redd Remedies | 150 mg | — | Capsule |
| Daily Energy Elements High Octane Additive | HoltraCeuticals | 150 mg | — | Capsule |
| Nsl | Loomis Enzymes | 140 mg | — | Capsule |
| Occu-Plus Lutein | The Vitamin Shoppe | 125 mg | — | Capsule |
| Vein Essentials | Adaptogen Research | 125 mg | — | Capsule |
| OCU Complete With Lutein | Vitamer Laboratories | 125 mg | — | Capsule |
| Foward Multinutrient | Whitaker Nutrition | 125 mg | — | Capsule |
| From the Earth | The Vitamin Shoppe | 125 mg | — | Tablet or Pill |
| Buffered C Select | Moss Nutrition | 125 mg | — | Capsule |
| Forward Multinutrient | Whitaker Nutrition | 125 mg | — | Capsule |
| Vitamin C with Quercetin | Integrative Therapeutics | 125 mg | — | Capsule |
| Lung Support | NutriONN | 125 mg | — | Capsule |
| Vision Essentials Comprehensive Formula | Swanson | 125 mg | — | Capsule |
| Vision to the Max | Maxi Health | 120 mg | — | Capsule |
| Cholo-Pak | Douglas Laboratories | 117 mg | — | Other (e.g. tea bag) |
| Active-C with Bioflavonoids 1000 mg | The Vitamin Shoppe | 111 mg | — | Tablet or Pill |
| SvG | Loomis Enzymes | 110 mg | — | Capsule |
| Ultra Catabolic | Douglas Laboratories | 100 mg | — | Capsule |
| C-1000 Complex 1000 mg | The Vitamin Shoppe | 100 mg | — | Capsule |
| Basic Preventive 4 (Iron and Copper Free) | Douglas Laboratories | 100 mg | — | Tablet or Pill |
| Joint Health Pack | Douglas Laboratories | 100 mg | — | Other (e.g. tea bag) |
| Ultra Preventive Beta With Copper & Iron | Douglas Laboratories | 100 mg | — | Tablet or Pill |
| Ultra Optical Care | Douglas Cooper Co. | 100 mg | — | Capsule |
| Source of Life Liquid Natural Delicious Tropical Fruit Flavor | NaturesPlus | 100 mg | — | Liquid |
| Resistance Support Formula | Douglas Laboratories | 100 mg | — | Tablet or Pill |
| MK-7 Artery Circulation | Dr. Sinatra | 100 mg | — | Capsule |
| Blood Sugar Support Pack | Douglas Laboratories | 100 mg | — | Other (e.g. tea bag) |
| EPD II Formula | Douglas Laboratories | 100 mg | — | Tablet or Pill |
| PureWay-C 1000 mg Caps with 100 mg Bioflavonoids | Newflower Farmers Markets | 100 mg | — | Tablet or Pill |
| Multi-Complex with Vitamin K | Adaptogen Research | 100 mg | — | Capsule |
| Vitamin C with Bioflavonoids | Bronson | 100 mg | — | Powder |
| Ultra Preventive III Low Allergenicity | Douglas Laboratories | 100 mg | — | Tablet or Pill |
| Women's Elite 100 with Maximum Essential Omega-3 500 mg | ProCaps Laboratories | 100 mg | — | Capsule |
| Cortico-B5B6 | Metagenics | 100 mg | — | Tablet or Pill |
| Magnesium Ascorbate 1000 mg | Source Naturals | 100 mg | — | Tablet or Pill |
| Bilberry Complex | NOW | 100 mg | — | Capsule |
| Ultra Preventive-Beta With Copper & Iron With Natural Mixed Carotenoids | Douglas Laboratories | 100 mg | — | Tablet or Pill |
| Sinus Adult Sinus Support | Redd Remedies | 100 mg | — | Tablet or Pill |
| Beauty Advantage | Indiana Botanic Gardens | 100 mg | — | Capsule |
| AlphaSorb-C 500 | NOW | 100 mg | — | Capsule |
| Clinical Strength Ocu Support | NOW | 100 mg | — | Capsule |
| Men's Elite 100 | ProCaps Laboratories | 100 mg | — | Capsule |
| Ultra Preventive-Beta With Copper With Natural Mixed Carotenoids | Douglas Laboratories | 100 mg | — | Tablet or Pill |
| Multigenics | Metagenics | 100 mg | — | Tablet or Pill |