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

• Active B-12 Dibencozide 3000 mcg with Folic AcidCountry Life · off the market3,000,000 mcg as transcribed, likely a slip
• Active B-ComplexIntegrative Therapeutics1,000 mcg
• Active B12Brainchild Nutritionals500 mcg
• Active B12 1000Seeking Health1,000 mcg
• Active B12 5000Seeking Health5,000 mcg
• Active B12 Dibencozide 3000 mcg with Folic AcidCountry Life3,000 mcg
• Active B12 Dibencozide With Folic Acid 3000 mcgCountry Life3,000 mcg
• Active B12 with L-5-MTHFSeeking Health1,000 mcg
• Active B12-FolateProThera · off the market1,000 mcg
• Active B12-FolateKlaire Labs · off the market1,000 mcg
• Active Bio-BEuroMedica · off the market1,000 mcg
• Active Chewable B12 Natural Cherry FlavorGenestra Brands1,000 mcg
• Active Chewable B12 with L-Methylfolate Natural Cherry FlavorGenestra Brands1,000 mcg
• Active ChocolateGNC Women's Ultra Mega50 mcg
• Active Energy ComplexSundown Organics2.4 mcg
• Active Energy Mango Lemonade FlavorSunwarrior Sport12 mcg
• Active Energy Peachy Mango FlavorSunwarrior Sport12 mcg
• Active Energy Strawberry Lemonade FlavorSunwarrior Sport12 mcg
• Active Energy Watermelon Wave FlavorSunwarrior Sport12 mcg
• Active FEAllegis Pharmaceuticals30 mcg
• Active Folate B12 ChewableDaVinci Laboratories of Vermont1,000 mcg
• Active Health TeenRainbow Light · off the market30 mcg
• Active Health Teen MultivitaminRainbow Light · off the market30 mcg
• Active Hydration Coconut Berry FlavorSunwarrior Sport12 mcg
• Active Hydration Strawberry Lemon Twist FlavorSunwarrior Sport12 mcg
• Active Kids CompleteOneSource · off the market4 mcg
• Active Kids Plus Extra COneSource · off the market2.5 mcg
• Active ManMET-Rx100 mcg
• Active Man's FormulaVitabase50 mcg
• Active Men's Alpha-MultiVivid Health Nutrition30 mcg
• Active Methylated B ComplexApproved Science500 mcg
• Active Milk ChocolateGNC Women's Ultra Mega50 mcg
• Active Mixed BerryGNC Ultra Mega Green250 mcg
• Active MultiFINAFLEX50 mcg
• Active Multi PacksMET-Rx50 mcg
• Active Multi ViteGenestra Brands270 mcg
• Active Multi Vite Gummies Natural Raspberry-Lemon FlavorGenestra Brands100 mcg
• Active Multi Vite Without Vitamin AGenestra Brands270 mcg
• Active One Multi with IronSwanson Premium Brand · off the market100 mcg
• Active Peach MangoPlexus4.8 mcg
• Active SeniorRainbow Light · off the market200 mcg
• Active Senior SafeGuard MultivitaminRainbow Light · off the market200 mcg
• Active Seniors UnflavoredAll One125 mcg
• Active VanillaGNC Women's Ultra Mega50 mcg
• Active Vanilla CremeGNC Women's Ultra Mega50 mcg
• Active Vanilla FlavorReliv1.5 mcg
• Active Vitamin PackKirkland Signature75 mcg
• Active without IronGNC Women's Ultra Mega50 mcg
• Active WomanMet-Rx100 mcg
• Active Woman's MultiVitabase200 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