Best Vitamin B12 Supplement (2026): Form, Dose & Who Needs It
The best B12 supplement for most people is NatureWise Vitamin B12 1000 mcg. It gives 1,000 mcg a softgel, is on NSF’s testing list and costs $0.12 a day at list price. If you want methylcobalamin, Thorne is on two NSF lists.
By Erin Rose Updated October 17, 2026 How we score
Our pick for: Most people
- B12
- 1,000 mcgas cyanocobalamin
- A day
- $0.12one softgel, NatureWise’s list price
- Testing list
- NSF/ANSI 173
- Bottle
- 60-count bottle, $6.99NatureWise’s list price
Our take
Why we pick it Of the pills on a testing list, it costs the least a day.
What you give up You swallow a softgel, and it contains gelatin, so it is not vegan.
Testing record
- NSF/ANSI 173: contents match the label Checked August 25, 2026.
Not found on: NSF Certified for Sport, Informed Sport, Informed Choice, USP Verified.
Our other 2 picks
Our pick for: Methyl form
- B12
- 1,000 mcg a capsuleas methylcobalamin
- A day
- $0.40one capsule, Thorne’s list price
- Testing lists
- NSF Certified for Sport, NSF/ANSI 173
- Bottle
- 60-capsule bottle, $24.00Thorne’s list price
Our take
Why we pick it It is the methylcobalamin on two NSF lists. NSF Certified for Sport also tests each lot for substances banned in sport, which matters if you are drug-tested as an athlete.
What you give up Price: more than three times what NatureWise costs a day.
Testing record
- NSF Certified for Sport: banned substances, by lot See the listing Checked September 22, 2026.
- NSF/ANSI 173: contents match the label Checked August 25, 2026.
Not found on: Informed Sport, Informed Choice, USP Verified.
Our pick for: Vegan
- B12
- 1,000 mcg a chewableas methylcobalamin
- A day
- $0.13one chewable, Jarrow’s list price
- Label
- Labeled vegan
- Testing list
- None
Our take
Why we pick it It is labeled vegan, and it is a lemon chewable, so there is nothing to swallow.
What you give up It is not on a public testing list.
Testing record
Not found on any testing list we check.
Not found on: NSF Certified for Sport, Informed Sport, Informed Choice, NSF/ANSI 173, USP Verified.
Which B12 to buy for your situation
| Your situation | What to buy |
|---|---|
| You want one B12 that most people can take | NatureWise Vitamin B12 1000 mcg, $0.12 a day (our pick) |
| You want methylcobalamin, tested | Thorne Vitamin B12 (methylcobalamin), $0.40 a day (above) |
| You want methylcobalamin for less, no testing list | Nutricost Methyl B12 1000 mcg, $0.07 a day: a bit less than our pick, but not on a testing list |
| A test shows your B12 is low | Your doctor sets the dose and whether you need shots. The test that confirms it |
| Your doctor wants a higher dose | NOW Methyl B-12 5000 mcg, $0.43 a day, with methylfolate |
| Your doctor wants a higher dose, no pill to swallow | Solgar Methylcobalamin 5000 mcg, a cherry nugget you dissolve under the tongue |
| You are over 50 | Any 1,000 mcg pill here works. B12 for seniors |
| You are vegan | Jarrow Methyl B-12 1000 mcg, a lemon chewable labeled vegan, $0.13 a day. B12 for vegans |
| You are vegetarian and your B12 is normal | Carlyle Vitamin B12 100 mcg, 100 mcg, $0.04 a day. Not enough to fix low B12. |
Talk to a doctor first if
- You have numbness, tingling, balance trouble or memory changes. Get tested before you start: B12 can hide the cause.
- You have kidney disease. Ask which form and dose to take. No trial has compared the forms in kidney disease.
- You have Leber’s disease or a cobalt allergy. The FDA label warns against cyanocobalamin in early Leber’s disease. Every form of B12 contains cobalt.
What to look for on the label
Look for USP Verified or an NSF listing: an outside lab checked the product. “Third-party tested” with no program named is only the brand’s word. Of the 6 B12 pills we score, 3 are on a list. The other products in the table are linked so you can compare.
What to skip
Skip 5,000 mcg every day “just in case”: no trial shows it works better than 1,000 mcg if your level is normal. Skip slow-release B12, which no study shows works better. If your B12 is normal, more has not been shown to add energy. B12 and energy.
How we score
Out of 10, from five checks (last checked October 1, 2026; full method):
- Testing, up to 3 points: full points if this exact product is on a public testing list; half if the brand says it tests but names no list we can check.
- Dose, up to 3 points: a serving gives the dose trials used.
- Cost, up to 2 points: the cost a day at list price, against the cheapest.
- Label, up to 1 point: the label states every amount.
- Recalls, up to 1 point: no FDA recall naming the brand in 24 months.
We searched USP Verified, NSF/ANSI 173, NSF Certified for Sport, Informed Choice and Informed Sport on October 15, 2026.
Frequently asked questions
What strength of B12 should I buy?
1,000 mcg, the usual pill strength. You absorb only about 13 mcg of a 1,000 mcg pill (NIH). That still covers the 2.4 mcg adults need.
Is cyanocobalamin or methylcobalamin better?
Either works for most people. NIH finds no evidence that one form is absorbed better. Your cells turn every form into the same working forms (Obeid 2015). Methyl vs cyano.
Is sublingual or a shot better than a pill?
For staying topped up, a pill is enough. Under-the-tongue B12 worked no better than a swallowed pill (Sharabi 2003). In small trials, high-dose pills raised B12 about as well as shots (Wang 2018).
Who needs a B12 supplement?
Besides vegans and adults over 50 (see the table), people who take metformin or an acid reducer for years can run low. After stomach or weight-loss surgery, follow your surgical team’s B12 plan. Signs of low B12.
Related guides
- B12 dosage guide: how much to take by age.
- Is 1,000 mcg too much?: what a high dose does.
- What every B12 costs: every size, priced.
Sources
- NIH Office of Dietary Supplements. Vitamin B12 fact sheet for health professionals (updated July 2, 2025; read October 15, 2026).
- Wang H, et al. Oral vitamin B12 versus intramuscular vitamin B12 for vitamin B12 deficiency. Cochrane Database Syst Rev. 2018. PubMed 29543316
- Obeid R, et al. Cobalamin coenzyme forms are not likely to be superior to cyano- and hydroxyl-cobalamin in prevention or treatment of cobalamin deficiency. Mol Nutr Food Res. 2015. PubMed 25820384
- Sharabi A, et al. Replacement therapy for vitamin B12 deficiency: comparison between the sublingual and oral route. Br J Clin Pharmacol. 2003. PubMed 14616423
- FDA cyanocobalamin injection label (DailyMed): Leber’s disease and cobalt warnings.
- Testing: USP Verified, NSF/ANSI 173, NSF Certified for Sport (Thorne, listing 1811504), Informed Choice and Informed Sport, searched October 15, 2026. Prices: each brand’s own list price, checked October 15, 2026.