vitamin

Vitamin B12 supplements

Half of the 14,425 vitamin B12 supplements in the NIH label database that print an amount list 36 mcg or less per serving; the middle half list 6 mcg to 200 mcg (DSLD version 9.4.0, January 2026). The 654 products whose only supplement ingredient is vitamin B12 list a median of 1,000 mcg.

How much vitamin B12 do supplements contain?

The median product lists 36 mcg per serving. One in ten lists 2.8 mcg or less, one in ten 1,000 mcg or more. The amount printed most often is 6 mcg (1,349 products).

How do the amounts compare with the Daily Value and the upper limit?

The FDA Daily Value for vitamin B12 is 2.4 mcg (adults and children 4 and older). The median product gives 1500% of it per serving; the 90th percentile 41667%.

The upper limit is for total intake from food, water and supplements unless stated, and does not apply under medical supervision. A label amount is what the maker printed. This is data, not advice: the NIH ODS fact sheets explain what each nutrient does.

Which forms of vitamin B12 do labels name?

Cyanocobalamin is the form named most often: 7,144 of the 14,774 vitamin B12 products (48%), ahead of methylcobalamin (5,005, 34%) and adenosylcobalamin (223, 2%). A product naming two forms counts in both; the table below gives every form.

• Cyanocobalamin
• Methylcobalamin
• Adenosylcobalamin
• Hydroxocobalamin

Which products list the most vitamin B12?

On-market products, per serving, with a plausible amount: the rule leaves out likely entry slips, such as an amount far beyond every other label with no %DV or strength on the label to back it (each product page still shows its own amount, marked).

• Methyl B12 - 15 mgAOR Advanced Orthomolecular Research Advanced45,000 mcg
• Mega B-12 Daily VitsNOW12,000 mcg
• B-12 10,000 mcg Mixed BerryNOW Shots10,000 mcg
• B-12 10,000 mcg Delicious Cherry FlavorVitaSorb10,000 mcg
• Extra Strength Methyl B-12 10,000 mcgNOW10,000 mcg
• Methylcobalamin B-12 10,000 mcg B-6 & Folic Acid 1,200 mcgSuperior Source10,000 mcg
• Methylcobalamin B-12 10,000 mcgSuperior Source10,000 mcg
• B-12 10,000 mcgSuperior Source10,000 mcg

Have the amounts changed over the years?

Products whose current label entered DSLD in 2011 list a median of 50 mcg; those entered in 2025, 30 mcg.

In which products and brands?

Brands listing it most: Douglas Laboratories (245), Nature's Way (236), Nature's Plus (226), Cellucor (111), Country Life (107), Bronson (95), NOW (91), Nature Made (89), ProCaps Laboratories (87), Nature's Bounty (84).

Every product listing vitamin B12

14,774 products, A to Z by name (page 160 of 296), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.

• MetabotrimPharmanex · off the market6 mcg
• MetaboUP PlusObesity Research Institute15 mcg
• MetaCalmMetabolic Maintenance30 mcg
• MetaGlycemXMetagenics150 mcg
• MetaKids Multi Soft Chew Juicy Grape FlavorMetagenics1.2 mcg
• MetaKids Nutrition Powder Chocolate FlavorMetagenics1.2 mcg
• MetaKids Nutrition Powder Vanilla FlavorMetagenics1.2 mcg
• MetaRelax Orange Citrus FlavorMetagenics3 mcg
• Metha-Drol Extreme Pro-Anabolic Mass StackIronMagLabsin a blend
• Metha-Drol Extreme Pro-Anabolic Mass StackBlackstone Labsin a blend
• Methionine PlusFoster Regal6 mcg
• Methionine PlusWonder Laboratories6 mcg
• Methionine PlusDC6 mcg
• Methischol GenericNew Pharma2 mcg
• MethoxyBurnPro-Nutra500 mcg
• Methyl + Adenosyl B-12 Gold 2,400 mcgNutriGold · off the market2,400 mcg
• Methyl 12 PlusD'Adamo Personalized Nutrition1,000 mcg
• Methyl B CompletePure TheraPro Rx1,000 mcg
• Methyl B ComplexOrtho Molecular Products500 mcg
• Methyl B ComplexBioCare250 mcg
• Methyl B ComplexVitality For Life48 mcg
• Methyl B-12GNC · off the market2,500 mcg
• Methyl B-12Carlson1,000 mcg
• Methyl B-12NHC Natural Healthy Concepts5,000 mcg
• Methyl B-12NB Pure Pure Vegan500 mcg
• Methyl B-12 1,000 mcgLuckyVitamin1,000 mcg
• Methyl B-12 1,000 mcgNOW1,000 mcg
• Methyl B-12 1,000 mcg Natural Berry FlavorVillage Vitality · off the market1,000 mcg
• Methyl B-12 1,000 mcg Natural Berry FlavorNatural Nutra1,000 mcg
• Methyl B-12 1,000 mcg Natural Berry FlavorWoodstock Vitamins1,000 mcg
• Methyl B-12 1,000 mcg Natural Berry Flavor LozengesVitamer Laboratories · off the market1,000 mcg
• Methyl B-12 10,000 mcgNOW · off the market10,000 mcg
• Methyl B-12 10,000 mcgBiophix10,000 mcg as transcribed, likely a slip
• Methyl B-12 1000 mcgJarrow Formulas · off the market1,000 mcg
• Methyl B-12 1000 mcgNutraBio1,000 mcg
• Methyl B-12 1000 mcgBaar Nature's Blessing1,000 mcg
• Methyl B-12 1000 mcg & Methyl Folate 400 mcg plus P-5-P LemonJarrow Formulas1,000 mcg
• Methyl B-12 1000 mcg & Methyl Folate 400 mcg plus P-5-P Lemon FlavorJarrow Formulas · off the market1,000 mcg
• Methyl B-12 1000 mcg LemonJarrow Formulas1,000 mcg
• Methyl B-12 1000 mcg Lemon FlavorJarrow Formulas · off the market1,000 mcg
• Methyl B-12 1000 MicrogramsNutraBio · off the market1,000 mcg
• Methyl B-12 2000 mcgNutraBio · off the market2,000 mcg
• Methyl B-12 2000 MicrogramsNutraBio · off the market2,000 mcg
• Methyl B-12 2500GNC · off the market2,500 mcg
• Methyl B-12 2500 mcgGNC2,500 mcg
• Methyl B-12 2500 mcg TropicalJarrow Formulas2,500 mcg
• Methyl B-12 2500 mcg Tropical FlavorJarrow Formulas · off the market2,500 mcg
• Methyl B-12 3000 mcgSpecialty Pharmacy · off the market3,000 mcg
• Methyl B-12 5 mg Cool SpearmintBulletproof · off the market5,000 mcg
• Methyl B-12 5,000 mcgLuckyVitamin5,000 mcg

Where next?

• Liquid vitamin B12
• Vegan vitamin B12
• Vitamin B12 drops
• Vitamin B12 gummies
• Check an amount of vitamin B12
• Labels above the upper limit
• All ingredients