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 276 of 296), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.

• Vitamin B-12 1000 mcgMajor1,000 mcg
• Vitamin B-12 1000 mcgDC1,000 mcg
• Vitamin B-12 1000 mcgNature's Blend1,000 mcg
• Vitamin B-12 1000 mcgHealth Thru Nutrition1,000 mcg
• Vitamin B-12 1000 mcgVital Nutrients2,000 mcg
• Vitamin B-12 1000 mcgRite Aid1,000 mcg
• Vitamin B-12 1000 mcg CherryGNC1,000 mcg
• Vitamin B-12 1000 mcg Lozenges CherryGNC1,000 mcg
• Vitamin B-12 1000 mcg Time ReleasedBasic Vitamins1,000 mcg
• Vitamin B-12 1000 mcg Timed ReleaseInside1,000 mcg
• Vitamin B-12 1000 mcg Timed-ReleaseGNC1,000 mcg
• Vitamin B-12 1000 mgNature's Bounty · off the market1,000 mcg
• Vitamin B-12 1500 mcgGNC1,500 mcg
• Vitamin B-12 2,000 mcg Cherry FlavoredNature's Way2,000 mcg
• Vitamin B-12 2,000 mcg Potency Cherry FlavoredNature's Way · off the market2,000 mcg
• Vitamin B-12 2000 mcgNature's Plus · off the market2,000 mcg
• Vitamin B-12 250 mcgMajor250 mcg
• Vitamin B-12 250 mcg SupplementNature Made250 mcg
• Vitamin B-12 2500 mcgPhysioLogics · off the market2,500 mcg
• Vitamin B-12 2500 mcgNature's Blend2,500 mcg
• Vitamin B-12 2500 mcg Berry BlastGNC2,500 mcg
• Vitamin B-12 2500 mcg Chocolate Chip Cookie DoughGNC · off the market2,500 mcg
• Vitamin B-12 2500 mcg SublingualBasic Vitamins2,500 mcg
• Vitamin B-12 3000 mcg Raspberry Flavor Liquid DropsNature's Blend3,000 mcg
• Vitamin B-12 5 mgHealth Products Distributors5,000 mcg
• Vitamin B-12 5,000 mcg Fast Dissolve StrawberryNatrol5,000 mcg
• Vitamin B-12 5,000 mcg Fast Dissolve Strawberry Natural FlavorNatrol5,000 mcg
• Vitamin B-12 50 mcgDouglas Laboratories50 mcg
• Vitamin B-12 50 mcg Refreshing MintGNC · off the market50 mcg
• Vitamin B-12 500GNC · off the market500 mcg
• Vitamin B-12 500 mcgNature's Plus · off the market500 mcg
• Vitamin B-12 500 mcgVitaCeutical Labs500 mcg
• Vitamin B-12 500 mcgGood 'N Natural · off the market500 mcg
• Vitamin B-12 500 mcgNature's Bounty500 mcg
• Vitamin B-12 500 mcgPlus Pharma500 mcg
• Vitamin B-12 500 mcgPuritan's Pride500 mcg
• Vitamin B-12 500 mcgSwanson Premium Brand · off the market500 mcg
• Vitamin B-12 500 mcgRugby500 mcg
• Vitamin B-12 500 mcgFoods Plus500 mcg
• Vitamin B-12 500 mcgMajor500 mcg
• Vitamin B-12 500 mcgGNC500 mcg
• Vitamin B-12 500 mcgCHK Nutrition500 mcg
• Vitamin B-12 500 mcgAvPAK500 mcg
• Vitamin B-12 500 mcgNature's Blend500 mcg
• Vitamin B-12 500 mcgBasic Vitamins500 mcg
• Vitamin B-12 500 mcgNature Made500 mcg
• Vitamin B-12 500 mcgGeri-Care500 mcg
• Vitamin B-12 500 mcg SupplementNature Made · off the market500 mcg
• Vitamin B-12 500 mgNature's Plus · off the market500 mcg
• Vitamin B-12 500 mg SupplementNature Made500 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