| B-12 5000 mcg | Mason Natural | 5100 mcg | 85000% | Tablet or Pill |
| B12 Strips 2000 mcg Winter Berry Flavor | Transformations Weight Loss | 2000 mcg | 33333% | Other (e.g. tea bag) |
| B12 Strips 2000 mcg Winter Berry | Essential Source | 2000 mcg | 33333% | Other (e.g. tea bag) |
| B12 Strips 5 Day Energy Winter Berry | Essential Source | 2000 mcg | 33333% | Other (e.g. tea bag) |
| Ultra B12-Folate | Designs for Health | 2000 mcg | 33333% | Capsule |
| Stress B Complex RX | Taylor MD Formulations | 1200 mcg | 20000% | Capsule |
| BioActive B12 | Pure TheraPro Rx | 1200 mcg | 50000% | Liquid |
| Living Liquid | Viva Vitamins | 1000 mcg | 1666% | Liquid |
| Biotrinsic | DC | 1000 mcg | 41667% | Capsule |
| BP Pack | Douglas Laboratories | 625 mcg | 10417% | Other (e.g. tea bag) |
| Essential Nutrients | Progressive Professional from Progressive Laboratories | 500 mcg | 8333% | Capsule |
| Hear Loss Formula | SuperSmart | 400 mcg | — | Capsule |
| Neurex | SuperSmart | 400 mcg | — | Capsule |
| Enhanced Energy Teen Stay Sharp Multivitamin | KAL | 250 mcg | 10417% | Tablet or Pill |
| Maximum Vibrance Chocolate Chunk | Vibrant Health | 240 mcg | 10000% | Powder |
| Maximum Vibrance Vanilla Bean | Vibrant Health | 240 mcg | 10000% | Powder |
| Liquid Complete B Advanced Formula | California Academy of Health | 200 mcg | 3333% | Liquid |
| PRE V.2 Raw Unflavored | NutraBio | 150 mcg | 2500% | Powder |
| Bone Health Pack | Douglas Laboratories | 125 mcg | 2083% | Other (e.g. tea bag) |
| Memory Pack | Douglas Laboratories | 125 mcg | 2083% | Other (e.g. tea bag) |
| M(6) | High Performance Nutrition | 100 mg | — | Capsule |
| Mood Improve Advanced Mood Support | 4 Organics | 100 mcg | 1667% | Capsule |
| Blood Pressure Support | Sunergetic | 100 mcg | 4167% | Capsule |
| Enhanced Energy Whole Food Multivitamin Mango Pineapple Flavor | KAL | 100 mcg | 1667% | Tablet or Pill |
| Brain Energy Rx | Herbal Groups | 100 mcg | 1666% | Capsule |
| Ultra Preventive III | Douglas Laboratories | 90 mcg | 3750% | Capsule |
| Met-A-SynX-Pack | Douglas Laboratories | 63 mcg | 1050% | Other (e.g. tea bag) |
| B-Complex | DC | 60 mcg | 2500% | Softgel Capsule |
| Food-Based Prenatal Complete | VitaCeutical Labs | 60 mcg | 750% | Tablet or Pill |
| Tru Paleo Chocolate | Adaptogen Research | 50 mcg | 833% | Powder |
| Triple Strength L-Carnitine 3000mg Citrus Flavor | NOW Sports | 50 mcg | 2083% | Liquid |
| Nerve Comfort | SuperSmart | 50 mcg | 2000% | Tablet or Pill |
| Tru Paleo Vanilla | Adaptogen Research | 50 mcg | 833% | Powder |
| Dyzime-ACM | DC | 44 mcg | 1833% | Tablet or Pill |
| Coenzyme-B B-50 Complex | Newflower Farmers Markets | 25 mcg | — | Capsule |
| B-Complex & B-12 | Radiance | 25 mcg | 417% | Tablet or Pill |
| Ultra Preventive World Formula | Douglas Laboratories | 25 mcg | — | Capsule |
| Women's Once Daily Multivitamin & Mineral | Trader Joe's | 25 mcg | 417% | Tablet or Pill |
| B-Complex And B-12 | Vitamin World | 25 mcg | 417% | Tablet or Pill |
| Pro Matcha Chocolate Creme | Vibrant Health | 20 mg | — | Powder |
| Pro Matcha Natural | Vibrant Health | 20 mg | — | Powder |
| Pro Matcha Vanilla Creme | Vibrant Health | 20 mg | — | Powder |
| Zatean-Pn DHA | Trigen Laboratories | 12 mcg | — | Capsule |
| B-12 Energy Boost Sticks Tart Berry | NOW Sports | 10 mg | 416667% | Powder |
| Integra Plus | US Pharmaceutical Corporation | 10 mcg | 166% | Capsule |
| Little One | Metabolic Maintenance | 10 mcg | 417% | Capsule |
| Promum Diamond Plus | Everyday Health | 10 mcg | 357% | Capsule |
| BCAA + EAA | Steel | 6 mcg | 100% | Powder |
| Real Food B-Complex | Swanson | 6 mcg | 250% | Capsule |
| Ultra B-12 | NOW | 5 mg | 208333% | Liquid |
| Remember Me | HoltraCeuticals | 5 mg | — | Capsule |
| Chew-A-Vit | DC | 5 mcg | 83% | Tablet or Pill |
| Triple Potency Liver | Healthy 'N Fit | 5 mcg | 188% | Capsule |
| Real Food Multi Women's Daily | Swanson | 3 mcg | 125% | Capsule |
| Xobaline Methyl B-12 3 | LifeLink | 3 mg | 50000% | Tablet or Pill |
| Real Food Multi Men's Daily | Swanson | 3 mcg | 125% | Capsule |
| Multivite | Everyday Health | 2.4 mcg | 100% | Capsule |
| Healthy Kids Immunity Elderberry Flavor | SmartyPants | 2.4 mcg | 100% | Gummy or Jelly |
| B-12 2,000 mcg | NOW | 2 mg | 83333% | Lozenge |
| Instant Energy B12 | NOW | 2 mg | 83333% | Powder |
| Mayhem Energy Sour Sweet Brats | Millecor | 2 mcg | 21% | Powder |
| TMG-15 Complex 500 | LifeLink | 1.5 mcg | 25% | Tablet or Pill |
| Methylcobalamin | SuperSmart | 1 mg | 40000% | Tablet or Pill |
| Coenzymated B Formula | SuperSmart | 1 mg | — | Capsule |
| Smart Pills | SuperSmart | 1 mg | 40000% | Capsule |
| Methylcobalamine 1 mg | SuperSmart | 1 mg | — | Tablet or Pill |
| Liquid Morph+ Fruit Punch | iSatori | 0.6 mcg | 10% | Liquid |
| Super B12 Solution | Natrium Health | 0.5 mg | 20833% | Liquid |
| Milletov Burn Rainbow Sherbet | Millecor | 0.005 mg | 2063% | Powder |
| Hearing Support | NaturesPlus AgeLoss | 0 NP | — | Capsule |
| Mega B-12 Dots 5000 mcg | Twinlab | 0 NP | — | Tablet or Pill |
| Methyl B-12 Cherry Flavor 5000 mcgDiscontinued | Jarrow Formulas | 5000 mcg | 208330% | Lozenge |
| Active B-12 Dibencozide 3000 mcg with Folic AcidDiscontinued | Country Life | 3000 mg | 50000% | Lozenge |
| Methyl B-12 Tropical Flavor 2500 mcgDiscontinued | Jarrow Formulas | 2500 mcg | 104170% | Lozenge |
| Supplemelts Sublingual Activated B-12 Complex Natural Cherry FlavorDiscontinued | Swanson Ultra | 2000 mcg | 83333% | Lozenge |
| Best Fully Active B12 (MethylCobalamin)Discontinued | Doctor's Best | 1500 mcg | 25000% | Capsule |
| Best Fully Active B12 (MethylCobalamin) 1500 mcgDiscontinued | Doctor's Best | 1500 mcg | 25000% | Capsule |
| Super Immune MultiVitaminDiscontinued | SuperNutrition | 1000 mcg | 16667% | Tablet or Pill |
| Methyl B-12 1000 mcgDiscontinued | Jarrow Formulas | 1000 mcg | 16666% | Lozenge |
| Quick Melt Fully Active B12 1000 mcgDiscontinued | Doctor's Best | 1000 mcg | 16667% | Tablet or Pill |
| Opti-Energy Pack Iron-FreeDiscontinued | SuperNutrition | 1000 mcg | 16667% | Tablet or Pill |
| Methyl B-12 Lemon Flavor 1000 mcgDiscontinued | Jarrow Formulas | 1000 mcg | 41670% | Lozenge |
| Menopause MultipleDiscontinued | SuperNutrition | 1000 mcg | 16667% | Tablet or Pill |
| Methyl B-12 Cherry Flavor 500 mcgDiscontinued | Jarrow Formulas | 500 mcg | 20830% | Lozenge |
| Active Senior SafeGuard MultivitaminDiscontinued | Rainbow Light | 200 mcg | 3333% | Tablet or Pill |
| Natural Born Hair RaiserDiscontinued | aProvenProduct | 133 mcg | 2217% | Capsule |
| MOABDiscontinued | Muscle Warfare | 100 mcg | 1668% | Other (e.g. tea bag) |
| A.J.'s Ultra Multi without IronDiscontinued | Altrum | 90 mcg | 1500% | Tablet or Pill |
| Food Based Complete Prenatal SystemDiscontinued | Rainbow Light | 60 mcg | 750% | Tablet or Pill |
| AttentionDiscontinued | BodSmith | 60 mcg | 1000% | Liquid |
| B-Complex And B-12 USPDiscontinued | Vitamin World | 25 mcg | 417% | Tablet or Pill |
| B-Complex plus B-12Discontinued | Nature's Bounty | 25 mcg | 417% | Tablet or Pill |
| Geri-Vite 25Discontinued | Douglas Laboratories | 25 mcg | 417% | Capsule |
| B-Complex And B-12Discontinued | Good 'N Natural | 25 mcg | 417% | Tablet or Pill |
| Ultimate-X8 Sour Apple BlastDiscontinued | XLSN Xcel Sports Nutrition | 6 mcg | — | Powder |
| Liquid B-12 5000 mcgDiscontinued | Protocol For Life Balance | 5 mg | 83333% | Liquid |
| 100% Pure Defatted Desiccated Beef Liver From Argentina 500 mgDiscontinued | Swanson Premium Brand | 1 mcg | 17% | Capsule |
| Prenatal-U CapsulesDiscontinued | Cypress Pharmaceutical | 0 NP | — | Capsule |