Most B12 shopping mistakes happen before the bottle reaches your cart. A huge number on the front can hide a short supply, an awkward form, or a formula you do not need. Start with the reason you are considering B12, then use the Supplement Facts panel to compare dose, form, serving count, and inactive ingredients.
Editorial review updated July 2026. This is a label and product-record evaluation, not a hands-on or clinical assessment. Prices and stock can change.
Short on time? NOW Methyl B-12 1,000 mcg is our practical pick because its 1,000 mcg methylcobalamin dose and 100-lozenge format make it easier to compare against your own plan than the 2,000 and 5,000 mcg options. Check the current label before ordering.
Our Verdict
NOW Methyl B-12 1,000 mcg
A straightforward 1,000 mcg methylcobalamin lozenge with a defined 100-count supply.
Best for: Adults who want a moderate single-nutrient option to discuss with a clinician
Check Price on AmazonHow we evaluated these B12 supplements
We compared the product records supplied for this update, including B12 form when named, labeled amount, delivery format, count, declared dietary restrictions in the product title, current availability, and current listed price. We also checked each recommendation against NIH and FDA guidance on B12 and Supplement Facts labels. We did not consume these products, commission lab work, inspect manufacturing sites, or judge a supplement by a marketplace rating. That distinction matters: a label can help you compare bottles, while a clinician and appropriate testing guide a response to symptoms or a diagnosed deficiency.
At a glance
| Product | Listed B12 | Format | Best fit | |
|---|---|---|---|---|
| NOW Methyl B-12 | 1,000 mcg | 100 lozenges | Moderate labeled dose | Check price |
| Nutricost 1,000 mcg | 1,000 mcg | 240 capsules | Long listed supply | Check price |
| Pure Encapsulations | 1,000 mcg | 60 capsules | Shorter supply | Check price |
| Thorne | Methylcobalamin | 60 capsules | Third-party-certified claim | Check price |
| Nature’s Bounty | 1,000 mcg | 60 quick-dissolve tablets | Flavor-first format | Check price |
Our eight picks
Best overall: NOW Methyl B-12 1,000 mcg
NOW Methyl B-12 1,000 mcg
Best OverallPros
- 1,000 mcg methylcobalamin stated in product record
- 100-lozenge count
- Lowest listed price among the 1,000 mcg picks
Cons
- Lozenge format may not suit everyone
- No individualized dose guidance
This is the cleanest starting point in this group because the record gives you a named B12 form, a 1,000 mcg amount, and a 100-count format. It sits far below the 5,000 mcg entries and above a food-level contribution, so it makes a useful comparison anchor when your clinician has suggested an oral product.
Skip this if: you need a clinician-directed regimen, cannot use lozenges, or want a capsule. Nutricost’s 1,000 mcg capsule carries the same stated amount with 240 capsules, while this option has the shorter 100-count supply.
Best long listed supply: Nutricost B12 1,000 mcg
Nutricost Vitamin B12 1,000 mcg
Best Long SupplyPros
- 1,000 mcg methylcobalamin stated
- 240 capsules
- Vegetarian and non-GMO claims in product record
Cons
- Capsule rather than dissolve format
- Do not choose it only for bottle size
The 240-capsule count is the practical reason to consider this bottle. It matches the listed 1,000 mcg amount of NOW and Pure Encapsulations, so the decision is delivery format and supply rather than a bigger front-label number.
Skip this if: you want to try a short supply before committing. Pure Encapsulations has 60 capsules at the same listed 1,000 mcg amount, and NOW gives a 100-count lozenge option for less at the recorded price.
Best for a short capsule trial: Pure Encapsulations Methylcobalamin
Pure Encapsulations Methylcobalamin 1,000 mcg
Short Supply CapsulePros
- 1,000 mcg stated
- Methylcobalamin named
- 60-capsule count
Cons
- Higher listed price than other 1,000 mcg options
- Shorter supply
Pure Encapsulations belongs here for shoppers who prefer a modest 60-capsule supply over a large bottle. Its record matches the 1,000 mcg dose of NOW and Nutricost, but the price is markedly higher than both. Pay for a label you have checked, not an assumption that a higher price changes the role of B12.
Skip this if: value per bottle drives your choice. Nutricost lists four times as many capsules at a lower recorded price.
Best record for stated certification: Thorne Vitamin B12
Thorne Vitamin B12
Certification ClaimPros
- Methylcobalamin named
- Third-party-certified claim in product record
- Gluten, dairy, and soy-free claims
Cons
- 60-capsule count
- Highest listed price among capsule choices
Thorne’s listing is the one in this group that states third-party certification, plus gluten, dairy, and soy-free claims. Those facts can narrow a search, but confirm the current bottle and certification details yourself. The product record does not give a comparable mcg amount, so we would not rank it above the transparent 1,000 mcg entries on dose value.
Skip this if: you need a clearly stated amount for a direct dose comparison. NOW, Nutricost, and Pure Encapsulations each state 1,000 mcg in the supplied records.
Best higher-dose capsule option: Nutricost B12 2,000 mcg
Nutricost Vitamin B12 2,000 mcg
2,000 mcg CapsulePros
- 2,000 mcg methylcobalamin stated
- 240 capsules
- Gluten-free claim in product record
Cons
- Twice the listed amount of 1,000 mcg picks
- High count can encourage autopilot buying
This bottle doubles the listed amount of the 1,000 mcg capsule choices while keeping the same 240-count format. That makes it a specific option, not an automatic upgrade. NIH notes that B12 needs vary by life stage and that people with absorption issues may need individualized advice.
Skip this if: you have no reason to move beyond a 1,000 mcg labeled option. Compare the label with your clinician’s advice before using dose as a scorecard.
Best quick-dissolve budget pick: Nature’s Bounty B-12
Nature's Bounty B-12 Quick Dissolve 1,000 mcg
Quick DissolvePros
- 1,000 mcg stated
- Quick-dissolve tablet format
- Cherry flavor stated
Cons
- 60-tablet count
- Flavor may be unnecessary
The appeal is format: a 1,000 mcg quick-dissolve tablet with a stated cherry flavor. It has the same listed amount as NOW but only 60 servings versus 100. Pick it for the format, not because flavored tablets have a nutritional edge.
Skip this if: you avoid flavored supplements or want a longer supply. NOW has more listed servings at a similar recorded price.
Best explicit 5,000 mcg dissolve option: Horbäach B12
Horbäach B12 5,000 mcg
5,000 mcg DissolvePros
- 5,000 mcg stated
- 120 fast-dissolve tablets
- Low recorded price
Cons
- Highest stated dose in the list
- Dose alone does not establish fit
Horbäach gives you a clearly stated 5,000 mcg fast-dissolve tablet at a low recorded price. That is a reason to pause, not a reason to assume it wins. The listed amount is five times the 1,000 mcg products and should match a plan made with a qualified professional.
Skip this if: you are shopping for a general, easy-to-compare daily product. The NOW or Nutricost 1,000 mcg records create a more restrained starting comparison.
Honorable mention: aSquared Nutrition Methyl B-12 5,000 mcg
aSquared Nutrition Methyl B-12 5,000 mcg
Higher-Dose Honorable MentionPros
- 5,000 mcg methylcobalamin stated
- 120-count bottle
- Named B12 form
Cons
- Highest recorded price
- High listed dose
This is the most expensive item in the supplied B12 records despite sharing the 5,000 mcg category with Horbäach. Its named methylcobalamin form may matter to a shopper comparing labels, but the price gap is substantial and no record here supports paying more for a better outcome.
Skip this if: price matters or you have not received dose guidance. Horbäach lists the same 5,000 mcg amount for far less, while 1,000 mcg products make a different comparison point.
How to choose a B12 supplement
Start with need, not the bottle
Adults generally need 2.4 mcg of B12 a day, according to NIH. Foods such as fish, meat, eggs, dairy, fortified cereal, and fortified nutritional yeast can contribute. A vegan pattern, older age, gastrointestinal surgery or conditions, and some medicines can change the conversation. Symptoms and suspected deficiency deserve clinical assessment rather than a self-selected mega-dose.
Read Supplement Facts in this order
First, find the serving size and the B12 amount. Next, note the form, such as methylcobalamin when stated. Then count servings, inspect other ingredients, and compare cost per serving only after the first four checks. FDA requires a Supplement Facts panel and other label information, but the agency does not approve dietary supplements for safety and effectiveness before sale.
Choose a format you will use as directed
Capsules, lozenges, and quick-dissolve tablets are different formats, not proof of superiority. NOW and Nature’s Bounty suit shoppers who prefer dissolve formats; Nutricost and Pure Encapsulations suit capsule shoppers. If swallowing, allergens, flavor, or a medical condition affects your choice, take the bottle to a pharmacist or clinician.
What separates these eight B12 products
Dose should narrow the list, not rank it
The label amounts in this group range from 1,000 to 5,000 mcg. That spread makes the biggest number look like the obvious upgrade, but it is not a sensible universal ranking system. A 5,000 mcg lozenge is a different buying decision from a 1,000 mcg capsule, especially when a clinician has suggested a particular schedule. Use the amount on the label to remove products that do not match the plan you were given. Do not use it as a shortcut for deciding that one bottle is stronger, more useful, or better value for every reader.
Count matters only after dose and format fit
Nutricost’s 240-capsule listings appear economical because a bottle can last much longer than a 60-count option. That advantage disappears if the capsule format or labeled amount is not the one you need. NOW’s 100-lozenge bottle and Nature’s Bounty’s quick-dissolve tablets may be more practical for someone who does not want a conventional capsule. Compare the number of usable servings, not just the number printed on the front. A serving can differ from one tablet or capsule, and the current suggested-use panel is the final check.
Form is one line in a larger decision
Every pick in this list identifies methylcobalamin in the product record, which makes form comparison unusually simple. That does not make the products interchangeable. Other ingredients, flavoring, dissolving format, capsule shell, bottle count, and manufacturer instructions still differ. People often fixate on the word methylcobalamin and skip the serving amount or extra ingredients. Read the complete panel in sequence, especially if you avoid a sweetener, follow a vegan pattern, or have been told to limit a particular ingredient.
Three practical B12 shopping scenarios
You want a straightforward 1,000 mcg comparison
Start with NOW, Nutricost 1,000 mcg, Thorne, and Nature’s Bounty. NOW and Nature’s Bounty are dissolve-style choices; Nutricost is the long-count capsule; Thorne has the shortest listed bottle count among those four. Compare the current suggested use, serving count, other ingredients, and delivered price. This is a tighter and more useful shortlist than comparing all eight at once.
You were given a specific higher-dose instruction
Nutricost 2,000 mcg, Horbaach 5,000 mcg, and aSquared 5,000 mcg are the relevant label matches in this group. Confirm the exact amount and schedule with the professional who gave the instruction, because a higher label amount does not establish how often it belongs in your routine. Horbaach and aSquared are dissolve-style products, while the Nutricost record describes capsules. That format difference may decide the purchase before price does.
You are comparing cost for long-term use
Calculate cost per labeled serving using the price you see at checkout, then include the delivery frequency and storage date. Subscription discounts can make a listing appear cheaper while adding an unwanted recurring order. Large bottles reduce reorder frequency but are poor value if the expiration window, format, or suggested use does not fit. Check the seller, tamper-evident packaging, and return terms before buying any supplement from a marketplace listing.
How B12 fits a training-focused nutrition plan
B12 belongs in a conversation about dietary adequacy, not in the same category as a stimulant pre-workout. It supports normal biological functions, but taking more does not replace calories, carbohydrate, protein, hydration, sleep, or recovery time. If low energy persists, guessing with a supplement can delay the useful step of reviewing diet, training load, sleep, medicines, and laboratory results with an appropriate professional. Athletes who eat few or no animal foods should pay particular attention to reliable fortified foods and professional guidance because natural food sources are concentrated in animal products.
For routine planning, list every source that contributes B12: fortified cereal or nutritional yeast, a multivitamin, an energy product, and any dedicated bottle. This avoids judging a new purchase in isolation. The same inventory also makes a pharmacist or dietitian conversation more productive because the total amount, forms, and schedules are visible in one place.
Safety and label caveats
Do not use this list to diagnose low B12 or replace medical care. NIH advises people taking medicines or managing health conditions to discuss supplements with a healthcare provider. Bring the exact bottle, dose, and full medication list. Recheck the current Supplement Facts panel, suggested use, allergen statement, and tamper seal after delivery. Marketplace prices, availability, and formulations move.
Frequently asked questions
Is methylcobalamin better than other B12 forms?
The product records identify methylcobalamin for several picks, but the right form and amount depend on your reason for using B12. A clinician can help interpret your diet, medical history, medicines, and lab results.
Can a 5,000 mcg bottle replace a medical evaluation?
No. A large label number does not explain why a level is low or establish the right response. Use testing and professional advice for symptoms or a diagnosed issue.
Should vegans consider B12?
NIH identifies plant-based eaters as a group that may have difficulty getting enough B12 from food because natural sources are mainly animal foods. Fortified foods and clinician-guided supplements are practical topics to discuss.
Do I need B12 for workout energy?
B12 has normal roles in red blood cell formation and neurologic function, but a supplement is not a substitute for sleep, adequate food, training recovery, or a medical evaluation of fatigue. See our TDEE calculator to put daily intake in context.
Can I take B12 with other supplements?
Ask a pharmacist or clinician who can review the complete stack and medication list. A multivitamin may already contain B12, so add the amounts rather than treating every bottle as separate.
What should I check when the bottle arrives?
Match the ASIN, Supplement Facts panel, amount per serving, count, expiration date, and seal with the listing. Stop and contact the seller or manufacturer if the label differs materially.
Bottom line
NOW Methyl B-12 1,000 mcg earns the top spot because its record states the form, dose, count, and a low current price without pushing the list toward 5,000 mcg by default. Nutricost 1,000 mcg is the better long-supply capsule comparison. Use this guide to read labels, then use clinical advice for any health question. Pair nutrition planning with our protein pacing guide, Greek yogurt nutrition guide, and OMAD calculator.
Sources
- National Institutes of Health Office of Dietary Supplements: Vitamin B12 Fact Sheet for Consumers
- U.S. Food and Drug Administration: FDA 101 Dietary Supplements
- U.S. Food and Drug Administration: Daily Value on Nutrition and Supplement Facts Labels
